US3195538A - Hydraulic air bells - Google Patents

Hydraulic air bells Download PDF

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Publication number
US3195538A
US3195538A US64333A US6433360A US3195538A US 3195538 A US3195538 A US 3195538A US 64333 A US64333 A US 64333A US 6433360 A US6433360 A US 6433360A US 3195538 A US3195538 A US 3195538A
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Prior art keywords
bell
valve
breathing
aperture
cylinder
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Expired - Lifetime
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US64333A
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English (en)
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Galeazzi Roberto
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/02—Divers' equipment
    • B63C11/18—Air supply
    • B63C11/22—Air supply carried by diver
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B7/00—Respiratory apparatus
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B7/00—Respiratory apparatus
    • A62B7/02—Respiratory apparatus with compressed oxygen or air
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B7/00—Respiratory apparatus
    • A62B7/10—Respiratory apparatus with filter elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/02—Divers' equipment
    • B63C11/18—Air supply
    • B63C11/22—Air supply carried by diver
    • B63C11/24—Air supply carried by diver in closed circulation

Definitions

  • HYDRAULIC AIR BELLS Filed Oct. 24. 1960 2 Sheets-Sheet 1 i ;32 3/ g 1 a 55 l. 1 9": 3g 35 I l 1/ l l I i N8 INVENTOR NV 2 ROBERTO G-ALEAZZ) BY ATTORNEYS July 20, 1965 R. GALEAZZI HYDRAULIC AIR BELLS 2 Sheets-Sheet 2 Filed 001 24. 1960 INVENTOR GALEAJZZ) ROBERTO ATTORNEYS United States Patent 3,195,538 HYDRAULIC AIR BELLS Roberto Galeazzi, 27 Via Olrloini, La Spezia, Italy Filed Oct. 24, 1960, Ser. No.
  • This invention relates to hydropneumatic bells or hydraulic air bells for use on underwater breathing equipments or in lungs of the semi-closed or closed type, in
  • the hydraulic air bell according to the invention is an improvement of the bell disclosed in my prior US. Patent No. 2,693,179, the main improvement consisting in providing an hydraulic air bell of the kind of that described in my prior patent with a filter capable of eliminating the CO2 from the polluted breathable mixture exhaled by the lungs user.
  • FIGURE 1 shows diagrammatically a hydraulic air bell fitted to an improved underwater breathing equipment of the type forming the object of my co-pending applicatiom'Ser. No. 64,498 filed October 24, 1960, Patent ment of gas-outlet valve employed in the air bells shown in FIGURES 2 and 3; and
  • FIGURE 5' is a vertical longitudinal section through a third embodiment of air bell.
  • the improved breathing equipment forming part of my 'co-pending application usually is composed of the following parts:
  • a source of breathing gas usually in the'form of one or'more compressed gas cylinders or steel bottles 1-101-201, the larger cylinder containing a compressed neutraljgas (usually nitrogen) or compressed air and the other two 101 and 201, which may be of lesser capacity, containing compressed oxygen.
  • the cylinders which are provided with conventional control valves 44, 144, 244 are connected (in parallel when they are more than one, as in the case as shown) to a mixing and distributing conduit 2 connected to a feed pipe 3 which is connected to a pressure reducer 4;
  • a breathing fitting comprising a mouthpiece or mask unit 7-8 provided with the necessary feed cock 6 and valves as well as with the connections to the gas ssource to the said hydraulic air bell 10 and, if desired,
  • the breathing ing equipment comprises a large cylinder 1 containing compressed air or a neutral gas (usually nitrogen) and one, or more conveniently two, small cylinders 101-201 containing compressed oxygen.
  • the cylinders are mounted in suitable holding means (not shown) including the metallic straps 28-128 and the conventional means for carrying the whole as a knapsack.
  • the cylinders are connected in parallel by means of a conduit 2 which is connected to a pipe 3 which feeds the gas mixture under high pressure (for example up to 150 atm.) to a pressure reducer 4, from which the gas is led by means of a flexible hose 5 to a stop cock 6 mounted on a breathing unit comprising a distributing chamber 7 provided with a pair of tubular necks 50-150 and a mouthpiece 8 (which latter might be replaced by a conventional breathing mask 108).
  • a conduit 2 which is connected to a pipe 3 which feeds the gas mixture under high pressure (for example up to 150 atm.) to a pressure reducer 4, from which the gas is led by means of a flexible hose 5 to a stop cock 6 mounted on a breathing unit comprising a distributing chamber 7 provided with a pair of tubular necks 50-150 and a mouthpiece 8 (which latter might be replaced by a conventional breathing mask 108).
  • a pair of corrugated flexible hoses 9-109 are fitted, whose opposite ends are provided with rotary air-tight joints on the inlet and outlet ends (as Will be better explained hereinafter) of a hydraulic air bell 10 of the kind disclosed in my said prior Patent No. 2,693,179 and provided with the improvements according to the present application.
  • the hydraulic air bell 10 is attached to the unit mounting the gas cylinders, including the straps 28-128 by means of a strut 29 attached to the rigid member, for example to strap 28, and connected by means of a pivot 30, at right angles to the vertical plane passing through the longitudinal axis of the bell 10, to a strut extension 31 fastened to the base of a U-shaped bracket 32 whose arm ends are fastened to the bell end attachment sockets 34, 134 of the said corrugated hoses 9-109.
  • the bell 10 which possesses a certain buoyancy, is allowed to rock about two horizontal axes contained in two planes at right angles and is urged by the weights 39 to dispose itself with its mouth 309 downwardly, as clearly shown in FIGURE 1.
  • the bells 10 particularly shown in FIGURES 2 and 3 comprise a substantially cylindrical shell 110 suspended horizontally on the said two tubular necks 35-135 from said joint sockets 34-134 fitted at the end of the said corrugated hoses 9-109.
  • the bell has on its cylindrical shell a wide opening which is urged down by weights 39.
  • One of the tubular necks 35 opens directly into the bell shell 110 (FIGURE 2).
  • the bell shell 110 is further provided with one or more vents or outlet valves 40, permitting of exhausting the air from hell 10 whilst avoiding the inlet of water into the said bell.
  • One of the said vents or outlet valves is shown in FIG. 4 as formed by a resilient disc or like member 140, made of rubber or like material, secured centrally of the bell shell 110 and adhering from the outside onto a crown of holes 240 provided in the said shell 110.
  • the. arm 72 is hollow and is"connected in a ,ccntralposition to an: upstanding hollow pivot 62 provided at its end of the breathing equipment shown in FIGURE 1, orfrom within the mask, as the case maybe, is'le'd through the hose 9, the tubular members 62, 72 and 7S and the with a screw thread.
  • ajunction box 64 is tightly mounted byrneans of. an "inwardly projecting flange provided with apacking ring 66. Above this.
  • a ballbearing 63 madei of seawater resistant ma terial is mounted and is retainedpressed against said boxflange by two inwardly and outwardly screw-threaded nuts65165.
  • the junctionbox is fastened in a' conventional way to the strap, shown in FIGURE 1, and is provided at one" or both its sides with one or two attachment sockets'for the corrugated hoseor hoses Si and/ or 199.
  • The'stirrup' 61 carries at its ends thebearings for the horizontal rocking axes of the bell 10.: w
  • stirrup arm 67 is:
  • the opposite arm 72 of thestirrup 61 is tubular and' I opens'in by its inner end' in the hollow pivot 62and is provided at its outer end with .
  • a rotatable joint 73' provided with a packing ring 74 and 'tightly'mounted on a '7 tubular extension of a pipe section '75 projecting outside the belljshell 110.
  • stirrup arm 67 may be tubular and the suspensionat' the left-hand half of the bell may-be exactly symmetrical to the right-hand half.
  • the casing orshell 1:10. is divided by a horizontal partition '81 into' an upper chamber 82and a lower chamber'85.
  • the upper chamber 82 is filled wi h filtering material which may be introduced or evacuated by removing the screw plug 56.
  • the partition has'a hole 84 in its centre, the edges of which are provided with a seat-forming packing material, the said filtering material filling. the chamber 82 being preventedfrorn flowing down through the hole 84 by a perforated shield 87.
  • Thepartition has also one or two side holes 83, likewise covered by a perforated shield 86 and through which' open the inner endof the pipesection' 75 communicating 7 through the joint 73 and the tubular'members 72 and 62 with the corrugated hose or hoses 9 and/ or 109.
  • the spring92 When, for any reason, the bell is strongly inclined or with its stern in substantially horizontal position, or even capsized, the spring92, whose force is in excess of the float'bouyancy, pushes the float 89 towards the opening 84, until the valve 90-adheres against the seat 91.
  • an air bell having a shell of substantially cylindrical form and a horizontal axis, a hollow-pivot and, a second pivot for said 'shell. arranged substantially in correspondence.
  • stirrup-like member having a vertical hollow'pivot communicating with said hollow stirrup arm and a box “rotatably mounted on said vertical pivot and provided with atleast one hollownipple" for connection 7 of: a flexible tube;
  • the lower bell chamber 85 is provided, as usual, with 5 wide lower openings 309 and with a central'weight' 39 from which a vertical stem 88 projects upwardly.
  • a coil spring 92 is inserted, on the top of which bears a float 89 slidably mounted on the freetop endof said stem 88 and provided at its top with an annular valve member 90 adapted to co-act' with the seat 91 when thc float is urged towards said partition 81';
  • the force said spring 92 is so related to the weight of the 'float 89 and to' its buoyancy that, with the bell upright, when the float is out of water, its weight is vsuflicient tocompress the spring 92and to keep the valve member Qtlclear of its seat 91', but it is urged against its seat when the 'float is immersed inwater, as well. as when the bell is not substantially upright.
  • the force of the saidspring is sufiicient to overcome the float'buoyancy
  • An 'underwater breathing equipment comprising at least one: breathing gas cylindenmeans for holding the 'cylinden a' face piece, a breathing ,fitting onsaid face piece, means connecting said cylinder directly and controllablyan'd only to said breathing fitting, apartially hollow stirrup-likemerribenhaving two coaxial pivots forming part of a first swivel joint and-fastened to the saidj cylinder-holding means, a hydraulic air bell formed of a shell having a mouth and suspended from ,said stirruplike member by said piyots'of the first swivel joint,- means V on said bell urging".
  • valve under said aperture
  • spring urging said valve'to close said aperture
  • said valve having suflicient weight to overcome said spring when the bell is normally disposed with the valve in vertical position
  • a float secured to the valve to buoyantly lift the valve and close said aperture upon entrance of a predetermined amount of water into the bell, and at least one filter port in said partition in communication with said tubular conduit by means of the stirrup-like member and said first and second swivel joints, said filter port and tubular conduit forming a regenerative air path entirely seperate from and independent of the air path defined by said breathing gas cylinder and means connecting the cylinder to the breathing fitting.
  • An underwater breathing equipment in which the air filter is arranged at the top of the bell shell and is separated from the free space at the bottom of the bell by said partition, said one aperture being a central opening and said filter port being a side opening in said partition, a tubular member putting in communication the interior of said filter with said flexible tubular conduit by connecting said filter port to the hollow portion of said stirrup-like member, a valve seat fitted around said central opening, a stem fastened to the bell shell aligned with said central opening, said float and valve being guided on said stem so as to be able to move towards or away from said valve seat, said spring tending to urge said float with its valve towards its seat, the whole being so arranged that, when water in excess enters the free space of the bell, in Whatever position of said bell, the valve on the float is urged against the seat on the said central opening to prevent the communication of the interior of the air filter with the free space at the interior of the bell.

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  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Emergency Medicine (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
US64333A 1959-10-28 1960-10-24 Hydraulic air bells Expired - Lifetime US3195538A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1818259 1959-10-28

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US (1) US3195538A (de)
CH (2) CH383173A (de)
FR (2) FR1282568A (de)
GB (2) GB964787A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483865A (en) * 1965-12-23 1969-12-16 Aga Ab Portable tank assembly for breathing apparatus
US3595229A (en) * 1968-02-15 1971-07-27 British Petroleum Co Apparatus for delivering a gas into the lungs of a patient
US4060076A (en) * 1975-03-14 1977-11-29 Aga Aktiebolag Breathing apparatus incorporating depth compensation
US4334533A (en) * 1976-01-05 1982-06-15 Henkin Melvyn Lane Breathing method and apparatus for simulating high altitude conditions
US4510932A (en) * 1981-10-01 1985-04-16 Gkss-Forschungszentrum-Geesthacht Gmbh Apparatus for supplying divers with artificial respiratory gas mixtures

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2583706B1 (fr) * 1985-06-25 1987-09-25 Lemasson Yves Perfectionnements aux appareils respiratoires a faux-poumons pour la plongee en eau profonde
EP0803434A3 (de) * 1996-04-23 1997-12-29 HTM SPORT S.p.A. Regler für Tauchatemgerät
IT1304358B1 (it) 1998-03-27 2001-03-15 Htm Sport Spa Corpetto equilibratore attrezzato.
DE102009060839A1 (de) * 2009-09-24 2011-03-31 Tauchtechnik Schmitt Gmbh Kreislaufgerät
CN107131326A (zh) * 2017-07-06 2017-09-05 轩维技术（北京）有限公司 转换阀
CN111150943B (zh) * 2019-12-25 2021-03-19 江苏海拓科技有限公司 一种调节型呼吸器
CN111135491B (zh) * 2019-12-25 2021-03-19 江苏海拓科技有限公司 一种扩张式呼吸器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB534908A (en) * 1938-12-03 1941-03-21 Henri Quinson Improvements in adjustable connectors or unions for coupling conduits and for like purposes
US2693179A (en) * 1950-09-16 1954-11-02 Galeazzi Roberto Apparatus for underwater immersion
US2732840A (en) * 1953-06-27 1956-01-31 De sanctis
US3005453A (en) * 1956-04-03 1961-10-24 Wellenstein Robert Device for supplying a free diver with air by means of a compressed-air breathing app

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB534908A (en) * 1938-12-03 1941-03-21 Henri Quinson Improvements in adjustable connectors or unions for coupling conduits and for like purposes
US2693179A (en) * 1950-09-16 1954-11-02 Galeazzi Roberto Apparatus for underwater immersion
US2732840A (en) * 1953-06-27 1956-01-31 De sanctis
US3005453A (en) * 1956-04-03 1961-10-24 Wellenstein Robert Device for supplying a free diver with air by means of a compressed-air breathing app

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483865A (en) * 1965-12-23 1969-12-16 Aga Ab Portable tank assembly for breathing apparatus
US3595229A (en) * 1968-02-15 1971-07-27 British Petroleum Co Apparatus for delivering a gas into the lungs of a patient
US4060076A (en) * 1975-03-14 1977-11-29 Aga Aktiebolag Breathing apparatus incorporating depth compensation
US4334533A (en) * 1976-01-05 1982-06-15 Henkin Melvyn Lane Breathing method and apparatus for simulating high altitude conditions
US4510932A (en) * 1981-10-01 1985-04-16 Gkss-Forschungszentrum-Geesthacht Gmbh Apparatus for supplying divers with artificial respiratory gas mixtures

Also Published As

Publication number Publication date
GB964788A (en) 1964-07-22
FR1272744A (fr) 1961-09-29
GB964787A (en) 1964-07-22
CH383173A (de) 1964-10-15
FR1282568A (fr) 1962-01-27
CH383172A (de) 1964-10-15

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