US3698483A - Automatically resettable fire sprinkler valve - Google Patents

Automatically resettable fire sprinkler valve Download PDF

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Publication number
US3698483A
US3698483A US84319A US3698483DA US3698483A US 3698483 A US3698483 A US 3698483A US 84319 A US84319 A US 84319A US 3698483D A US3698483D A US 3698483DA US 3698483 A US3698483 A US 3698483A
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piston
chamber
valve
movable
conduit
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US84319A
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English (en)
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John E Martin
Roger B Landry
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TEMPTAT CORP
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TEMPTAT CORP
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C37/00—Control of fire-fighting equipment
    • A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers

Definitions

  • ABSTRACT An automatically-resettable fire sprinkler valve is normally held closed by a piston-cylinder unit in which both ends of the piston are exposed to the high mainsupply water pressure, one of the piston ends being of greater effective area-than the other, such that the same water pressure acting on the different end areas normally forces a valve member to a flow-blocking 12 Claims, 6 Drawing Figures AUTOMATICALLY RESETTABLE FIRE SPRINKLER VALVE BACKGROUND OF THE INVENTION
  • the present invention relates to improvements in automatic fire-extinguishing sprinkler systems, and, in one particular aspect, to a novel and improved automatic fire-control sprinkler of economical and uncomplicated construction which will not only reliably spray supply-line water when the ambient rises beyond a predetermined level but will also automatically undergo a supply-line poweredpositive reclosure to prevent unnecessary water damage when its temperature-sensitive thermal actuator control element senses restoration of a predetermined safe temperature level.
  • fire-extinguishing sprinkler systems employ one-way valves, generally associated with fusible elements, which become operable or are automatically opened by these elements at dangerously high temperatures, such as occur whenever there is a fire, which are capable of melting the fusibleelements.
  • these valves Once operated, however, these valves remain open and continue to permit water to be released, usually from an overhead position, even after the fire may have been extinguished, until the system is manually shut-off via a main divisional or sectional valve in the water supply line.
  • a valving element inside the water supply line upstream of the water-discharge or sprinkler position, the arrangement being such that the main flow interferes with the valve operating characteristics by tending to keep the valve open or shut, so that shut-off in particular is not easily and reliably accomplished.
  • the closing actions may be variable with spring stiffness, pressure conditions, and the like. Also, both opening and closing actions depend upon more than one auxiliary valving, which renders operation uncertain and imprecise.
  • a further object of this invention is to provide an im-.
  • Yet another. object of the invention is to provide a novel and highlyeffective automatically-reclosing fireextinguishing sprinkler which utilizes a thermal actuator for reliably controlling the openings and closings of a supply-line valve without use of a reclosing spring, and in which an auxiliary piston-cylinder unit which powers valve reclosures is uniquely sealed against contamination of critical exposed piston-cylinder surfaces.
  • valve assembly including a supply-line valve element fixed with and opposed by the piston of an auxiliary piston-cylinder unit, the piston being exposed to the. supply-line water pressure on one broad-area side, and the valve element having a smaller area exposed to the same water pressure and disposed to block the flow of water from the line. Water pressure tends to maintain the valve in a closed position so long as a bleed port associated with the broad-area side of the piston is valved closed by an auxiliary valve operated by a miniature thermal actuator.
  • the supply-line valve element and piston-cylinder unit are both positioned downstream of the ends of the supply line.
  • the bleed port When ambient temperature sensed by the actuator rises to a dangerous level, as might be caused by a fire, the bleed port is valved open by low-level forces from the thermal actuator, and the supply-line valve element is then forced open by the water pressure, to permit escape of fire-extinguishing water.
  • the thermal actuator When the temperature decreases, as might occur when the fire has been put out, the thermal actuator valves the bleed port closed, whereupon water pressure again builds up within the piston-cylinder unit via an opening through the main.
  • valve element which, though displaced downstream, is
  • FIG. 1 is a side elevation, partly in section, of a fireextinguishing sprinkler valve assembly embodying the invention and illustrating the parts thereof in conditions which maintain the valve closed;
  • FIG. 2 is a similar side elevation, partly cross-sec tioned, of the assembly of FIG. 1 with its parts oriented topromote a fire-sprinkling water discharge;
  • FIG. 3 is a plan view of the assembly shown in FIGS. 1 and 2;
  • FIG. 4 is a side view of the same assembly shown in FIG. 1, in the closed condition;
  • FIG. 5 is a detail, in side elevation, of a pistoncylinder unit for an assembly like that of FIG. 1, wherein sealing against external contaminants is achieved by a lip-seal member; and a FIG. 6 illustrates the same detail of FIG. 5 for an open or water-discharging condition of the assembly.
  • an improved sprinkler assembly preferably constructed mainly of bronze or other suitable metallic material highly resistive to corrosion in a water environment, and adapted to be installed in a conventional overhead automatic sprinkler system for fire protection service, is generally indicated at 10.
  • This sprinkler assembly comprises a body portion 12 carried by arms 13 and 14 and supporting a main valve unit generally indicated at 16, the arms in turn being threadedly engaged with and supported by a threaded fitting 18 which is used to attach the assembly to the main water supply line 20 of a sprinkler system.
  • the main valve unit 16 is fixed with a piston 21 by way of a stem connection 22, and is vertically movable in conjunction with sliding movements of piston 21 within a cylinder 23 formed within body portion 12.
  • a flexible truncated conical lip-seal member Cooperating with piston 21 is a flexible truncated conical lip-seal member, an annular part 24a of which is clamped to the inner end of the piston facing inwardly toward the interior of cylinder 23, and the truncated part 24b of which flares outwardly in direction toward the interior of cylinder 23.
  • the said clamping is achieved by a washer 25 held in place by a nut 26 engaged with a central stem element 27. O-ring seal-22a between stem22 and stem element 27 insures a fluidtight relation between them.
  • Stainless steel pin 28, staked into body portion 12, mates with central stem element 27 via an opening 27a through the latter, and serves to aid in guiding vertical sliding movements of the stem and piston.
  • This piston-cylinder arrangement is normally effective to force the compressible sealing washer 29 tightly against the cooperating valve seat surfaces 18a formed at the downstream end of the fitting 18, and washer 29 thus functions as a valve disc to block flow from the seat.
  • a further auxiliary sealing washer 30, of lesser diameter than washer 29,- is disposed for snug mating as a plug within the downstream end of fitting 18; both washers are preferably made of silicone rubber or a like material which is somewhat compressible and capable of forming secure long-lasting seals.
  • Enlarged end 27b. of stem element 27 fastens these washers in place, when nut 26 I is tightened.
  • valving washers when seated as shown in FIG. I, prevent escape of water from the interior 31 of fitting 18, where it exists at the supply-line pressure furnished by supply line 20.
  • the water of course escapes, flowing in the direction of arrow 32, which is normally vertically downward in the usual inverted installation position of the entire assembly. Released water is then deflected laterally by spray deflector 33,'which has circumferentially-disposed ribs 33a for breaking up and spraying the stream.
  • Centrally disposed opening 27a through the stem element serves not only as a guide for pin 28 but also as a pressure-equalizing passageway between the high-pressure region 31 of the water supply line and the cylinder chamber 23 inwardly of the piston 21; clearance is provided for that purpose. Accordingly, because the construction involves an effective area of the upper surface of the piston 21, including its lip-seal, which is larger than the effective seating area of the valve disc arrangement on the fitting 18, the sprinkler valve assembly normally remains closed, as shown in FIG. 1.
  • a bleed port 34 is provided within the frame 12, leading from the cylinder chamber 23 to a smaller cavity 35a.
  • the latter cavity 350 is part of larger opening or bore 35 formed in the upper portion 12a of the frame 12.
  • One end of the bore 35 is partly closed by end wall 35b thereof, while the other end is threaded internally for receiving the externally threaded end of a perforated protective tubular shield 36 of an elongated thermal actuator 37.
  • Perforations 36a allow the actuator to be heated and cooled uniformly and rapidly as the ambient temperature changes occur.
  • An auxiliary annular valve seat member 38 is disposed within and in sealed relationship to the bore 35, and has a raised annular valve seat lip 38a (FIG. 2) on the side facing cavity 35a.
  • An auxiliary valve member 39 of slightly less cross-sectional area than the cavity 35a is positioned therein for lateral slid ing movement along the axis of the bore 35.
  • Stem portion 39a of member 39 is guided in an aperture in the end wall 35b and is slidably engaged within an O-ring exposed end of output member 43and annular member 38, thereby tending to force shaft 37a as far into the actuator as its temperature-responsive condition will allow; under normal-temperature conditions, the spring 45 will thus tend to urge shaft head 37b to draw auxiliary valve disk 41 against seat 38a, thereby maintaining the auxiliary valve closed, so that bleed port 34 is also closed.
  • Thermal actuator 37 is of a known construction in which the outer tubular element, closed at its outer end, retains a fill of thermally-responsive material 46 between that end and a movable piston-seal unit 47.
  • the fill 46 may consist essentially of a wax which exhibits a very substantial increase in volume as it makes the transition from a solid to liquid state within a predetermined narrow temperature range. Petroleumtype waxes having widely different melting temperatures are readily obtainable commercially, for example, and may be blended to achieve desired melting characteristics.
  • the movable piston-seal unit 47 may include a compressible cylinder of silicone rubber or the like, held under compression by a spring, and abutting the inner end of output member 43. A suitable unit is illustrated in US. Pat. No. 3,302,391 to Ferd P. Mihm, issued Feb. 7, I967 (see FIG. 5 thereof, for example).
  • a clip or wedge (not shown) may be fastened over the deflector 33 to prevent occurrence of an immediate surge of water when the sprinkler piping is first pressurized. Once the system is pressurized, such a clip or wedge is not called for and is to be removed.
  • the auxiliary valve will remain closed, and, in turn, the supply-line water pressure in cylinder chamber 23 will constantly hold the main valve closed", even though the full water pressure is being exerted against the main valve disk 29 in the downstream direction.
  • the thermal actuator fill 46 expands rapidly, pushing the piston-seal unit 47 out- I wardly, along with shafts 43 and 37a, until ultimatelyv the enlarged head 37b'of shaft 37aengages the calibration set screw 42.
  • FIG. 2 Water pressure within cylinder chamber 23 is then relieved through tbeannular valve-seat member 38, thecavity 35, and a vent 49 leading from cavity 35 to theambient exterior.
  • the pressure in cylinder chamber 23 diminishesand the related force on the piston 21 becomes less than the counteracting force exerted by the substantially-uhdiminished line pressure on the main valve disk 29, whereupon the latter is pushed downstream of fitting 18 and the mainsprinkler valve becomes opened, as shown in FIG. 2.
  • the released water impinges upon the deflector 33 and is dispersed as a spray for fire-extinguishing action, as suggested by arrows 50 in FIG. 2.
  • boot or cover 51 serves the purposes, and is conveniently in the form of a truncated conical silicone-rubber boot, the larger rim end 51a of which is fitted tightly over the open end of the cylinder boss forming cylinder chamber 23, and the smaller-diameter end 51b of which is fitted tightly about the stem 22 which extends outwardly from piston 21.
  • the interior 52 of the boot is thus well sealed against contaminants and corrosive effects, and is in enclosing relation to the aforementioned surfaces and sealing area.
  • boot or cover 51 is fully ex tended, as shown in FIG. 1, but, as the main valve is opened, the stem 22 and deflector 33 move vertically and cause it to be partially collapsed, as shown in FIG. 2.
  • the conical surfaces of that cover are naturally forced to bulge outwardly under the latter conditions, and therefore cannot cause jamming of the pistoncylinder unit.
  • FIGS. and 6 the boot-type cover is eliminated and its main functions are assumed by a simple lip-seal member 53.
  • the latter member generally like the lip seal formed as an effective part of the piston 21, is disposed on the opposite externally-exposed side of the piston, and its flexible lip 53b is sufficiently long to project slightly out of the cylinder chamber and completely enclose all cylinder surfaces in the normal closed condition of the assembly, as shown in FIG. 5.
  • the fragmentary views in both FIGS. 5 and 6 are of portions of overall structure generally the same as in FIGS. 1 4, and the same reference characters, with distinguishing single-prime accents added, are therefore used to designate the same or functionally-similar parts in the respective embodiments.
  • FIG. 5 The fragmentary views in both FIGS. 5 and 6 are of portions of overall structure generally the same as in FIGS. 1 4, and the same reference characters, with distinguishing single-prime accents added, are therefore used to designate the same or functionally-similar parts in the respective embodiments.
  • Automatic fire-extinguishing apparatus comprising a fluid inlet member connectable with a pressurized water supply line and having a main valve seating surface formed at its downstream end, a movable main valving member disposed externally of said inlet member and in downstream relation to said downstream end, and means disposed externally of said inlet member for mounting said movable valving member for movements into and out of seating engagement with said seating surface and for urging said valving member into said engagement responsive to pressures in said inlet member, said last-named means including a frame fixed with said inlet member, a piston mated with a cylinder chamber in said frame and having a stern extending out of said chamber and supporting said valving member for movements therewith into and out of said seating engagement, the effective crosssectional area of said piston exposed to pressure in said chamber being greater than the effective cross-sectional area of said valving member exposed to pressure in said inlet member, first fluid pressure communication means between said inlet member and said cylinder chamber, said first fluid-pressure communication means being in the
  • movable auxiliary valve member comprises a valve disk movable into and out of engagement with said auxiliary valve seat in upstream relationship thereto, whereby pressures in said auxiliary valve chamber tend to close said auxiliary valve disk against said auxiliary valve seat.
  • said temperature-responsive actuator means comprises an elongated heat-conductive tube closed at one end, a thermally-responsive fill material within said tube and exhibiting significant temperature-induced dimensional variations within a predetermined temperature range, a movable pistonseal unit disposed within said tube and sealing said tube against loss of said fill material, said output member extending partly into said tube and into force-transmitting engagement with said piston-seal unit, spring means mounted on said frame and urging said output membars into said tube and thereby urging said auxiliary valve member toward seating engagement with said auxiliary valve seat, and a hollow tubular shield fixed with said frame in spaced surrounding relation to said heat-conductive tube.
  • Automatic fire-extin guishin g apparatus as set forth in claim 2, further comprising a spray-forming deflector secured to said piston stern transversely in relation thereto and externally of said chamber, and flexible protective sealing means secured to said stem and extending into engagement with said frame in enclosing relation to externally-disposed surfaces of said cylinder.
  • said protective sealing means comprises a lip-seal member having an annular portion secured to said stem and a truncated conical lip-seal portion integral with said annular portion and slidable in said cylinder chamber, said lip-seal portion extending partly out of said cylinder chamber in engagement with surfaces at the end of said cylinder chamber when said stem orients said main valving member in seating engagement with the downstream end of said inlet member.
  • Automatic fire-extinguishing apparatus as set forth in claim 7, further comprising a second lip-seal member having an annular portion movable with said piston and a truncated conical lip-seal portion integral with said annular portion and slidable in said cylinder chamber, said second lip-seal member being disposed wholly within said chamber with said lip-seal portion flaring outwardly in direction away from said piston, said lipseal members being in a back-to-back orientation relative to one another with said piston therebetween.
  • Automatic fire-extinguishing apparatus comprising an open frame having a fluid inlet at one part thereof and a piston chamber at another part thereof in spaced relation to and in alignment with said inlet, said inlet being connectable with a pressurized water supply and having a main valve seat at its downstream end facing said chamber, a piston mated with said cylinder chamber and having a stem extending out of said chamber toward said main valve seat, a main valving member at the end of said stem disposed for movements with said stem into and out of seating engagement with said main seat, the effective cross sectional area of said piston exposed to pressure in said chamber being greater than the effective cross-sectional area of said valving member exposed to pressure in said inlet, fluid-pressure communication means between said inlet member and said cylinder chamber, said fluidpressure communication means comprising an opening extending from the area of said valving member exposed to pressure in said inlet and through said stem and piston into said cylinder chamber, said opening being disposed for communication with water discharged from the downstream end of said inlet when said valving member is
  • Automatic fire-extinguishing apparatus including a fluid conduit connectable with a pressurized water supply and a main valve having a movable valving member for opening andclosing saidconduit and, thereby, controlling release of fire-extinguishing water therefrom, said valving member being actuated to close, open and re-close said main valve solely by force of pressures associated with said water supply at the site of said valve, comprising a main valve seat fixed with said conduit and forming part of said main valve for controlled release ofv water therefrom, said movable valving member being disposed in downstream relation to said seat and being exposed to pressures in said conduit which tend to cause said member to separate from said seat and open said valve and conduit for release of water therefrom, a pistoncylinder unit including relatively'movable piston and cylinder members forming a fluid-tight chamber therebetween, means connecting said movable valving member with said piston cylinder unit for movements therewith to seat and unseat in relation to said seat and thereby to open and close said
  • Automatic fire-extinguishing apparatus comprising a fluid conduit connectable with a pressurized water supply, amain valve having a movable valving member for opening and closing said conduit, a pistoncylinder unit including relatively movable piston and cylinder members forming a fluid-tight chamber therebetween, means connecting said movable valving member with said piston cylinder unit for movements therewith to open and close said conduit, the effective cross-sectional area of said piston exposed to pressure in said chamber being greater than the effective crossunit being connected with said valving member to cause said valving member to close said conduit when the pressures in said chamber and conduit are substantially the same, fluid-pressure communication means between said conduit and said chamber, auxiliary valve means having a valve member movable to vent said chamber to the ambient atmosphere, and temperatureresponsive actuator means for opening and closing said auxiliary valve at predetermined high and low temperatures, respectively, said actuator means including an output member movable responsive to changes in ambient temperature and means including a lost-motion mechanical connection for coupling said output member in driving relation to said valve member of said
  • said actuator means comprises a heat conductive tube closed at one end, a thermally-responsive fill material within said tube and exhibiting significant temperature-induced dimensional variations within a predetermined temperature range, a movable piston-seal unit disposed within said tube and sealing said tube against loss of said fill material, said output member extending partly into said tube and into force-transmitting engagement withsaid piston-seal unit, and spring means urging said output member into said tube, said auxiliary valve member comprising a valve disk, said auxiliary valve including a valve seat in downstream relation to said chamber and to said valve disk whereby pressure in said chamber tends to close said valve disk against said valve seat, said output member being connected in driving relation with said valve disk by way of said lost-motion connection at a position exposed to ambient atmospheric pressure, and further comprising adjustable means for setting the extent of lost motion in said lost-motion connection.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
US84319A 1970-10-27 1970-10-27 Automatically resettable fire sprinkler valve Expired - Lifetime US3698483A (en)

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US8431970A 1970-10-27 1970-10-27

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US3698483A true US3698483A (en) 1972-10-17

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US (1) US3698483A (fr)
JP (1) JPS5416157B1 (fr)
BE (1) BE774553A (fr)
CA (1) CA937480A (fr)
CH (1) CH530800A (fr)
DE (1) DE2153340A1 (fr)
ES (1) ES396441A1 (fr)
FR (1) FR2113306A5 (fr)
GB (1) GB1366126A (fr)
IE (1) IE35773B1 (fr)
IL (1) IL37998A (fr)
LU (1) LU64162A1 (fr)
NL (1) NL7114490A (fr)
SE (1) SE379642B (fr)
ZA (1) ZA717122B (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3791450A (en) * 1972-04-03 1974-02-12 E Poitras On-off fire sprinkler
US3812914A (en) * 1973-08-02 1974-05-28 Itt Automatic on-off sprinkler
USRE29155E (en) * 1971-11-08 1977-03-22 Grinnell Fire Protection Systems Company, Inc. On-off sprinkler
EP0018065A1 (fr) * 1979-02-28 1980-10-29 MATHER & PLATT LIMITED Extincteur à déclenchement et arrêt
USD348719S (en) 1993-05-06 1994-07-12 The Viking Corporation Sprinkler head
US5533576A (en) * 1994-08-01 1996-07-09 Grinnell Corporation Automatic on-off fire protection sprinkler
US5628367A (en) * 1994-11-08 1997-05-13 The Viking Corporation Temperature sensitive sprinkler head with improved spring
US5632339A (en) * 1995-02-10 1997-05-27 Star Sprinkler Corporation Fire protection sprinkler head with spaced zones for mounting a protective guard and for connecting the sprinkler head to a water supply line
US5826665A (en) * 1994-11-08 1998-10-27 Truax; Perin E. Sprinkler head with stamped trigger-mounting elements
US6068205A (en) * 1997-05-29 2000-05-30 Vari; Peter On-off control for sprinklers and the like employing a sealing membrane
WO2000016855A3 (fr) * 1998-09-22 2000-07-13 Eltek Spa Arroseur deluge pour systemes d'incendie
US20070187551A1 (en) * 2006-02-10 2007-08-16 Goodrich Corporation Aircraft evacuation slide with thermally actuated gas relief valve
US20080308285A1 (en) * 2007-01-03 2008-12-18 Fm Global Technologies, Llc Corrosion resistant sprinklers, nozzles, and related fire protection components and systems
US8607886B2 (en) 2007-01-03 2013-12-17 Fm Global Technologies, Llc Combined plug and sealing ring for sprinkler nozzle and related methods
US20150021415A1 (en) * 2013-03-07 2015-01-22 Tyco Fire Products Lp Corrosion resistant nozzle
WO2015100187A1 (fr) * 2013-12-27 2015-07-02 Jack Protection, LLC Abri à eau ou étendue d'eau pour protéger un ouvrier de la chaleur, de la fumée, du feu et des produits chimiques

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US514154A (en) * 1894-02-06 Automatic fire-extinguishing apparatus
US600246A (en) * 1898-03-08 Frederick grinnell
US1143762A (en) * 1914-09-15 1915-06-22 Jesse J Hooks Thermostatic fire-extinguishing device.
US1241209A (en) * 1910-05-26 1917-09-25 Gen Fire Extinguisher Co Dry-pipe valve.
US1526718A (en) * 1922-09-26 1925-02-17 Walter C Collins System for the prevention of freezing of liquid in a pipe line
US2230179A (en) * 1939-01-17 1941-01-28 Cesar J Cid Sprinkler head for fire extinguishing systems
US3309028A (en) * 1964-07-31 1967-03-14 Donald G Griswold Sprinkler heads having valves actuated by separate pressure lines

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US514154A (en) * 1894-02-06 Automatic fire-extinguishing apparatus
US600246A (en) * 1898-03-08 Frederick grinnell
US1241209A (en) * 1910-05-26 1917-09-25 Gen Fire Extinguisher Co Dry-pipe valve.
US1143762A (en) * 1914-09-15 1915-06-22 Jesse J Hooks Thermostatic fire-extinguishing device.
US1526718A (en) * 1922-09-26 1925-02-17 Walter C Collins System for the prevention of freezing of liquid in a pipe line
US2230179A (en) * 1939-01-17 1941-01-28 Cesar J Cid Sprinkler head for fire extinguishing systems
US3309028A (en) * 1964-07-31 1967-03-14 Donald G Griswold Sprinkler heads having valves actuated by separate pressure lines

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE29155E (en) * 1971-11-08 1977-03-22 Grinnell Fire Protection Systems Company, Inc. On-off sprinkler
US3791450A (en) * 1972-04-03 1974-02-12 E Poitras On-off fire sprinkler
US3812914A (en) * 1973-08-02 1974-05-28 Itt Automatic on-off sprinkler
EP0018065A1 (fr) * 1979-02-28 1980-10-29 MATHER & PLATT LIMITED Extincteur à déclenchement et arrêt
USD348719S (en) 1993-05-06 1994-07-12 The Viking Corporation Sprinkler head
US5533576A (en) * 1994-08-01 1996-07-09 Grinnell Corporation Automatic on-off fire protection sprinkler
US5628367A (en) * 1994-11-08 1997-05-13 The Viking Corporation Temperature sensitive sprinkler head with improved spring
US5826665A (en) * 1994-11-08 1998-10-27 Truax; Perin E. Sprinkler head with stamped trigger-mounting elements
US5632339A (en) * 1995-02-10 1997-05-27 Star Sprinkler Corporation Fire protection sprinkler head with spaced zones for mounting a protective guard and for connecting the sprinkler head to a water supply line
US6068205A (en) * 1997-05-29 2000-05-30 Vari; Peter On-off control for sprinklers and the like employing a sealing membrane
WO2000016855A3 (fr) * 1998-09-22 2000-07-13 Eltek Spa Arroseur deluge pour systemes d'incendie
US20070187551A1 (en) * 2006-02-10 2007-08-16 Goodrich Corporation Aircraft evacuation slide with thermally actuated gas relief valve
US7314198B2 (en) * 2006-02-10 2008-01-01 Goodrich Corporation Aircraft evacuation slide with thermally actuated gas relief valve
US20080308285A1 (en) * 2007-01-03 2008-12-18 Fm Global Technologies, Llc Corrosion resistant sprinklers, nozzles, and related fire protection components and systems
US8607886B2 (en) 2007-01-03 2013-12-17 Fm Global Technologies, Llc Combined plug and sealing ring for sprinkler nozzle and related methods
US20150021415A1 (en) * 2013-03-07 2015-01-22 Tyco Fire Products Lp Corrosion resistant nozzle
US9566461B2 (en) * 2013-03-07 2017-02-14 Tyco Fire Products Lp Corrosion resistant nozzle
WO2015100187A1 (fr) * 2013-12-27 2015-07-02 Jack Protection, LLC Abri à eau ou étendue d'eau pour protéger un ouvrier de la chaleur, de la fumée, du feu et des produits chimiques
US20150184493A1 (en) * 2013-12-27 2015-07-02 Jack Protection, LLC Water shelter or shed to protect a worker from heat, smoke, fire and chemicals
US9441459B2 (en) * 2013-12-27 2016-09-13 Jack Protection, LLC Water shelter or shed to protect a worker from heat, smoke, fire and chemicals

Also Published As

Publication number Publication date
DE2153340A1 (de) 1972-05-04
IL37998A0 (en) 1971-12-29
FR2113306A5 (fr) 1972-06-23
CA937480A (en) 1973-11-27
LU64162A1 (fr) 1972-05-15
IE35773L (en) 1972-04-27
ZA717122B (en) 1972-07-26
GB1366126A (en) 1974-09-11
NL7114490A (fr) 1972-05-02
IL37998A (en) 1974-06-30
CH530800A (de) 1972-11-30
BE774553A (fr) 1972-04-27
IE35773B1 (en) 1976-05-12
ES396441A1 (es) 1974-05-01
JPS5416157B1 (fr) 1979-06-20
SE379642B (fr) 1975-10-20

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