US3514017A - Pressure regulating structure for piston pump - Google Patents

Pressure regulating structure for piston pump Download PDF

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Publication number
US3514017A
US3514017A US803686A US3514017DA US3514017A US 3514017 A US3514017 A US 3514017A US 803686 A US803686 A US 803686A US 3514017D A US3514017D A US 3514017DA US 3514017 A US3514017 A US 3514017A
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US
United States
Prior art keywords
piston
liquid
pressure
cylinder
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US803686A
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English (en)
Inventor
Carl E Malone
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AFA CORP
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AFA CORP
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Publication date
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Publication of US3514017A publication Critical patent/US3514017A/en
Assigned to WALTER E. HELLER AND COMPANY, INC. reassignment WALTER E. HELLER AND COMPANY, INC. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WAYNESBORO TEXTILES, INC., A CORP. OF VA.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/085—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump
    • B05B9/0877—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being of pressure-accumulation type or being connected to a pressure accumulation chamber
    • B05B9/0883—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being of pressure-accumulation type or being connected to a pressure accumulation chamber having a discharge device fixed to the container
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/14—Pumps characterised by muscle-power operation

Definitions

  • An end-of-stroke pressure release mechanism for a liquid pressurizing pump having a piston reciprocable in a cylinder for pressurizing a body of liquid in the pump chamber of the cylinder. Gradual drop off in pressure as the piston reaches the end of its pumping stroke is prevented by a bypass pressure release passage which connects the pump chamber with a zone of lower pressure when the pump piston has travelled substantially to the end of said stroke.
  • An O-ring seal carried by the piston cooperates with the bypass passage and serves as a valve for opening and closing the passage whereby pump chamber pressure is rapidly'relieved and then the bypass passage is rescaled for the subsequent intake stroke of the piston.
  • This invention relates to liquid pressurizing devices and in particular to a liquid pressurizing piston pump adapted to force a body of liquid under high pressure to a spray nozzle for developing a spray mist.
  • An object of the present invention is to provide a simple and inexpensive pressure release mechanism for a liquid dispensing device which provides a positive, instantaneous pressure cutoff whenever the liquid pressurizing piston reaches the end of its delivery stroke.
  • a more specific object is to provide an improved liquid spraying device of the type disclosed in my aforemen tioned co-pending application incorporating a pressure cutoff release port which cooperates with a variable resistance cylinder and piston structure to function automatically to maintain a more uniform pressure delivery from the pump chamber to the spray nozzle throughout substantially the entire working stroke of the piston.
  • FIG. 1 is a vertical center section illustrating a hand pressurized liquid spraying device incorporating a uniform pressure liquid pressurizing piston pump structure in accordance with the present invention, the piston being shown at about its midstroke position.
  • FIG. 2 is an enlarged fragmentary vertical sectional view along the axis of the device illustrating a portion of the structure shown in FIG. 1 but with the piston shown at the end of its liquid pressurizing and delivery stroke.
  • FIG. 3 is a horizontal section taken on the line 3-3 of FIG. 2.
  • FIG. 4 is a still further enlarged fragmentary elevational view looking outwardly from the center of the pump chamber toward the chamber inlet-outlet port illustrating the piston O-ring seal (divorced from the piston) in the same position in which it is illustrated in FIG. 2.
  • FIG. 1 illustrates a preferred example of a uniform pressure liquid delivery structure in accordance with my present invention applied to a liquid spraying device 10 such as that disclosed and claimed in my aforesaid co-pending application Ser. No. 712,306, filed Mar. 11, 1968, to which reference may be had for a more detailed disclosure of the structure and operation of liquid spraying device.
  • device 10 comprises a manually operated, handheld liquid spraying device which includes a non-pressurized, refillable container 12, for holding a supply of the liquid to be dispensed, the open upper end of which 1s closed by a screw-on cover structure 14.
  • Device 10 also includes a manually actuated, spring pressurized pump comprising a piston 16 reciprocable in a cylinder 18.
  • piston 16 is an integral part of cover 14, whereas piston -16 is connected by rigid stem 20 to a spray head 22 which is slidable guided on the container 12 by a dependent skirt 24 which also forms a hand hold for the device.
  • Spray device 10 is cocked for spraying by pushing spray head 22 downwardly so that it telescopes onto container 12, preferably while the container is supported as by resting it on a firm surface such as a table top.
  • This movement drives piston 16 down on its suction stroke against the force of a yieldable coil spring 26, causing liquid to be drawn from the body of liquid 28 in container 12, up dip tube 30, past inlet check valve 32 into the pump chamber 34.
  • Chamber 34 is axially defined between piston 16 and the fixed upper end wall 36 of chamber 34 which is formed by a piston retainer and plug insert 38 secured by rivets 40 to a screw top part 42 of closure 14. This downward movement of piston 16 also simultaneously cocks spring 26 to its fully stressed condition.
  • Valve 48 is preferably constructed in accordance with my U.S. Pat. No. 3,396,874.
  • spray head 22 When it is desired to refill container 12 with liquid, spray head 22 is rotated relative to container 12 to thereby unscrew closure -14 from the container, closure 14 being keyed to head 22 by a key 50 which projects into a keyway 52 in skirt 24.
  • inlet check ball 32 seats in a cup-like valve body 54 and closes an inlet port 56 which communicates with the upper end of dip tube 30.
  • Valve body 54 and dip tube 30 are both seated by press fits in a lateral protuberance 58 joined integrally to one side of cylinder 18 as best seen in FIGS. 1 and 3.
  • the space above check ball 32 forms a valve chamber 59 closed at its upper end by insert 38.
  • a flexible tube 60 extends in sealed relation through insert 38 to connect chamber 59 with valve '48.
  • a short passage 62 extends radially of cylinder 18 between the upper end of pump chamber 34 and valve chamber 59 to form a combined inlet-outlet for pump chamber 34.
  • cylinder 18 is provided with an escape port or release passage adapted to connect pump chamber 34 with a zone of pressure lower than that existent in the pump chamber when piston 16 is almost at the end of its up stroke, which constitutes the fluid pressurizing or delivery stroke of the piston.
  • this escape port constitutes a tapering groove 64 best seen in FIGS. 2, 3, and 4 which is machined or molded into the cylindrical interior wall 66 of cylinder 18 immediately below passage 62.
  • Groove 64 tapers to a point 68 at its lower end and the axis of the groove is inclined outwardly towards passage 62.
  • the'upper end of groove 64 intersects with a radially extending groove 70 which forms passage 62.
  • Groove 70 is cut or molded into the flat bottom wall 71 of a notch 72 (FIG. 4) in closure 42 which receives a keying and locating projection 73 of insert 38.
  • Groove 70 has a semicircular cross sectional configuration, groove 70 being covered by projection 73.
  • the lower end 68 of groove 64 blends smoothly into the cylinder wall 66 at a point just below rubber O-ring '74 when at its uppermost position as shown in FIGS. 2, 3, and 4.
  • O-ring 74 serves as the liquid sealing element for bore 66, and is carried between a flange 76 of piston 16 and a flange 78 of stem 20, these parts together forming the piston.
  • the starting depth of the groove 64 at its upper end will vary depending upon the relative size of the cylinder 18, pump chamber 34, piston stroke length, etc., but in the particular embodiment disclosed herein wherein the inside diameter of bore 66 is approximately .5 inch, the length of the piston stroke is approximately .75 inch and the parts are constructed by being scaled from the drawings herein utilizing these dimensions, the depth of groove 64 at its upper end measured radially of cylinder 18 from the center of the groove to an imaginary extension of wall 66 is in the range of about .018 to .025 inch.
  • the inclination of groove '64 relative to the axis of cylinder 18 is approximately degrees.
  • the diametrical thickness of O-ring 74 should be about .070 inch in its free state condition.
  • O-ring 74 is assembled between flanges 76 and 78 under axial compression with a slight squeeze so that it is distorted radially outwardly into liquid sealing engagement with wall 66.
  • O- ring and its piston groove are thus dimensioned relative to the diameter of bore 66 to produce a squeeze factor such that the O-ring is under compression radially by wall 66 throughout the working stroke of piston 16.
  • the spring chamber 79 formed within cylinder 18 below the piston in which spring 26 is housed is in communication with the interor of container 12 through an opening 80 in the bottom of cylinder 18.
  • fluid pressure in chamber 79 is the same as that of the head space 82 of container 12, which in turn is maintained substantially at atmospheric pressure through a venting arrangement such as those disclosed in my aforementioned co-pending application Ser. No. 712,306 or in my co-pending application entitled Leak Proof Container Seal, Ser. No. 779,755 filed Nov. 29, 1968.
  • seal 74 In operation, when piston 16 is travelling upwardly from the lower limit of its travel, which corresponds to the beginning of its liquid delivery or pressurizing stroke or the end of its intake stroke (indicated in broken lines in FIG. 1), until seal 74 starts to uncover lower end 68 of groove 64, seal 74 maintains a liquid tight seal with wall 66 which prevents escape of the liquid under pressure from pump chamber 34 downwardly past piston 16 to the zone of lower pressure comprising the chamber 79.
  • escape port 64 As soon as the pump chamber pressure has been relieved by opening of escape port 64 as described above, the escape port will be automatically closed by O-ring 74 expanding radially outwardly into groove 64 in response to the pressure relief. Due to its resiliency O-ring 74 deforms and flows or protrudes into groove 64, forming a protuberance 84 (as best seen in FIG. 3) which is effective to re-seal groove 64 under these low pressure conditions.
  • more uniform liquid delivery pressure is obtained throughout the working stroke of piston 16 by forming the bore 66 of cylinder 18 throughout the portion thereof engaged by O-ring 74, and preferably the entire cylinder from its extreme upper end down to opening 80, with a frusto-conical configuration so that the wall of bore 66 converges downwardly and diverges upwardly with a slight taper.
  • this taper is approximately on the order of /2 in a working embodiment of my invention constructed according to the forementioned dimensions when scaled from the drawing to these dimensions.
  • the tapered cylinder bore 66 cooperates with the resilient O-ring 74 to help compensate for the variation in liquid pressurizing force developed by coil spring 26 when, for reasons of economy, the same is a variable rate spring and hence exerts a higher force when fully stressed than when expanded. Due to the taper of bore 66 the greatest radial compnession or squeeze is applied to seal 74 when piston 16 is at the lower limit of itsstroke. Therefore the frictional drag of the seal 74 along wall 66 will be greatest during the first portion of the upward travel of piston 16 on its delivery stroke.
  • the tapered cylinder bore is also advantageous in that it permits much easier and positive molding of cylinder 18 when the parts are injection molded from plastic material, which is the preferred method of manufacture employed in making my liquid spraying device 10.
  • my invention provides a liquid pressurizing structure which can be incorporated into spray-type liquid dispensing devices without the need for any added parts, by very simple and low cost manufacturing operatlons and which will reliably function to automatically overcome the problems created by gradual end-of-stroke pressure drop-01f and will operate to maintain a more constant hydraulic pressure in such devices or systems.
  • a spray pressurizing head movably mounted on said container including first and second pump members movable relative to one another and defining a liquid pressurizing chamber and operably connected to said cover and head such that movement of said head relative to said cover changes the volume of said chamber, an inlet conduit adapted to conduct pressurized liquid from said chamber to said spray nozzle, a discharge valve in said outlet conduit, and biasing means operably connected to said pump members to bias said pump members in a direction tending to decrease the volume of said chamber whereby said biasing means is stressed when said device is manually actuated to move said head relative to said receptacle to thereby draw liquid from said receptacle into said chamber, the improvement comprising a
  • said device has means for maintaining the pressure in said head space about at atmospheric pressure
  • said pump members comprise a cylinder and a piston reciprocable in said cylinder
  • said one end of said pressure relief passageway opens to said outlet conduit and said other end of said passageway opens to the interior surface of the wall of said cylinder
  • said piston having sealing means in liquid sealing engagement with the wall of said cylinder, said zone of lower pressure comprising at least a space communicating with the liquid in said receptacle and the side of said piston remote from said pump chamber, said other end of said passageway being located relative to the travel of said sealing means such that said sealing means moves past said other end of said passageway when said piston reaches said pressure relief position thereof. to thereby connect said pump chamber via said outlet conduit and said passageway with said low pressure space of said cylinder.
  • said spring comprises a variable rate compression coil spring located in said low pressure space in said cylinder.
  • said piston sealing means comprises a resilient annular sealing member carried by said piston and radially compressed by the sliding engagement thereof with said cylinder wall, and wherein said pressure relief passageway comprises a shallow groove in the wall of said cylinder, said resilient seal expanding into said shallow groove to reseal the same in response to release of liquid from said pump chamber reducing the pressure therein substantially to that of said zone of lower pressure.
  • a liquid pressurizing device having a cylinder and a piston in said cylinder and reciprocable relative to one another to define a variable volume pump chamber, said piston carrying sealing means in sliding sealing engagement with the wall of said cylinder, the combination therewith of means for producing a sudden pressure drop in said pump chamber when said piston and cylinder are relatively positioned at a pressure relief position wherein said pump chamber volume is reduced almost to its mini mum, said means comprising a bypass passageway having an outlet port communicating with said cylinder at a point disposed on the side of said sealing means of said piston remote from said pump chamber only when said piston and cylinder are positioned between said pressure relief position thereof and their position at the minimum volume condition of said chamber, said passageway having an inlet port in communication with said pump chamber throughout the travel of said piston and said cylinder relative to one another.
  • said device contains a spring urging said piston and cylinder toward their minimum chamber volume position, and wherein at least the portion of said cylinder wall engaged by said piston sealing means throughout the travel thereof with said piston has a gradually tapering diameter which increases in the direction of travel of said piston which tends to decrease said pump chamber volume to thereby provide a gradual reduction-in the frictional drag of said sealing means along said cylinder wall as said spring moves said piston in the direction tending to decrease the volume of said pump chamber.
  • said piston sealing means comprises a resilient annular sealing member carried by said piston and radially compressed by the sliding engagement thereof with said cylinder wall, and wherein said pressure relief passageway comprises a shallow groove in the wall of said cylinder, said resilient seal expanding into said shallow groove to reseal the same in response to release of liquid from said pump chamber reducing the pressure therein substantially to that of said zone of lower pressure.
  • a spray pressurizing head movably mounted on said container including first and second pump members movable relative one to one another and defining a liquid pressurizing chamber and operably connected to said container and head such that movement of said head relative to said container varies the volume of said chamber, an inlet conduit adapted to conduct liquid in the receptacle to said chamber, a spray nozzle, an outlet conduit adapted to conduct pressurized liquid from said chamber to said spray nozzle, a discharge valve in said outlet conduit, and a variable rate spring operably connected to said pump members to bias said pump members in the direction tending to decrease the volume of said chamber whereby the stress applied to said spring is increased when said device is manually actuated to move said head

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
US803686A 1969-03-03 1969-03-03 Pressure regulating structure for piston pump Expired - Lifetime US3514017A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80368669A 1969-03-03 1969-03-03

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US3514017A true US3514017A (en) 1970-05-26

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Application Number Title Priority Date Filing Date
US803686A Expired - Lifetime US3514017A (en) 1969-03-03 1969-03-03 Pressure regulating structure for piston pump

Country Status (11)

Country Link
US (1) US3514017A (fr)
JP (1) JPS508207B1 (fr)
BE (1) BE746727A (fr)
BR (1) BR7017186D0 (fr)
DE (1) DE2009553A1 (fr)
ES (1) ES377081A1 (fr)
FR (1) FR2037496A5 (fr)
GB (2) GB1291367A (fr)
HK (1) HK15977A (fr)
IL (1) IL33790A (fr)
NL (1) NL7002209A (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3563415A (en) * 1969-06-04 1971-02-16 Multi Drop Adapter Corp Multidrop adapter
US3779464A (en) * 1972-03-22 1973-12-18 Afa Corp Manually actuated liquid spraying device
US3792800A (en) * 1972-07-06 1974-02-19 N Capra Liquid dispenser
US4142653A (en) * 1977-09-21 1979-03-06 The Continental Group, Inc. Flexible bag pump-type dispenser for mounting on cans
US4196828A (en) * 1979-01-10 1980-04-08 The Clorox Company Manually charged fluid dispenser having a hydraulically biased charging rod
US4838490A (en) * 1987-03-26 1989-06-13 Berthoud S.A. Rotatable nozzle assembly for sprayers
US5711461A (en) * 1995-09-27 1998-01-27 Contico International, Inc. Liquid dispenser
US5715974A (en) * 1996-10-07 1998-02-10 Contico International, Inc. Trigger sprayer having central vent cylinder
US5752811A (en) * 1996-11-15 1998-05-19 Petro; John P. Linear actuator mechanism for converting rotary to linear movement including one end pulley Line attached to the stationary anchor and other end attached to the take-up drum
USD588916S1 (en) 2008-04-02 2009-03-24 Mary Kay Inc. Container
USD588925S1 (en) 2008-04-02 2009-03-24 Mary Kay Inc. Container
US20110083634A1 (en) * 2008-02-08 2011-04-14 Flashlube Pty Ltd Lubricant Delivery System for Internal Combustion Engines
EP2884089A1 (fr) * 2013-12-10 2015-06-17 Robert Bosch Gmbh Coupleur hydraulique
CN108499769A (zh) * 2018-06-12 2018-09-07 湖南科道尔生物科技有限公司 一种具有延时自动喷液的高雾化装置
US10184528B2 (en) 2015-08-07 2019-01-22 Regal Beloit America, Inc. Coupling, drive assembly and associated method
CN114368536A (zh) * 2022-03-03 2022-04-19 蓝山中西医结合医院有限公司 一种智能眼角膜保存装置
CN119258255A (zh) * 2024-12-10 2025-01-07 浙江龙威电器有限公司 多功能消毒装置

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2412353A1 (fr) * 1977-12-23 1979-07-20 Staar Sa Dispositif debiteur de liquide sous pression
SG45171A1 (en) * 1990-03-21 1998-01-16 Boehringer Ingelheim Int Atomising devices and methods
ATE134165T1 (de) * 1990-12-04 1996-02-15 Dmw Tech Ltd Düsenvorrichtung zum verhindern des rückflusses
IL100224A (en) * 1990-12-04 1994-10-21 Dmw Tech Ltd Spray nozzle
DE19536902A1 (de) 1995-10-04 1997-04-10 Boehringer Ingelheim Int Vorrichtung zur Hochdruckerzeugung in einem Fluid in Miniaturausführung
CA2937976C (fr) * 2014-02-10 2023-04-04 Philip Morris Products S.A. Systeme de generation d'aerosol dote d'un ensemble chauffant permeable aux fluides
JP7249591B2 (ja) 2018-03-29 2023-03-31 日油株式会社 分解性ポリエチレングリコール結合体
CA3095618A1 (fr) 2018-03-29 2019-10-03 Nof Corporation Derive de polyethylene glycol degradable

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1865914A (en) * 1930-10-04 1932-07-05 Fred I Jaden Gun for applying liquid to dandelions
US2505198A (en) * 1947-11-20 1950-04-25 Moskowitz Seymour Hydraulic fluid device
US2568057A (en) * 1948-08-20 1951-09-18 Cotter Mfg Co Inc Atomizer with means for concealing plungers and nozzles
US2878974A (en) * 1953-06-26 1959-03-24 American Dispenser Co Inc Soap dispensers
US3116855A (en) * 1961-03-22 1964-01-07 James L Thomson Toy water gun
US3130675A (en) * 1962-03-28 1964-04-28 Buddie L Cripe Hydraulic hand pump

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1865914A (en) * 1930-10-04 1932-07-05 Fred I Jaden Gun for applying liquid to dandelions
US2505198A (en) * 1947-11-20 1950-04-25 Moskowitz Seymour Hydraulic fluid device
US2568057A (en) * 1948-08-20 1951-09-18 Cotter Mfg Co Inc Atomizer with means for concealing plungers and nozzles
US2878974A (en) * 1953-06-26 1959-03-24 American Dispenser Co Inc Soap dispensers
US3116855A (en) * 1961-03-22 1964-01-07 James L Thomson Toy water gun
US3130675A (en) * 1962-03-28 1964-04-28 Buddie L Cripe Hydraulic hand pump

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3563415A (en) * 1969-06-04 1971-02-16 Multi Drop Adapter Corp Multidrop adapter
US3779464A (en) * 1972-03-22 1973-12-18 Afa Corp Manually actuated liquid spraying device
US3792800A (en) * 1972-07-06 1974-02-19 N Capra Liquid dispenser
US4142653A (en) * 1977-09-21 1979-03-06 The Continental Group, Inc. Flexible bag pump-type dispenser for mounting on cans
US4196828A (en) * 1979-01-10 1980-04-08 The Clorox Company Manually charged fluid dispenser having a hydraulically biased charging rod
US4838490A (en) * 1987-03-26 1989-06-13 Berthoud S.A. Rotatable nozzle assembly for sprayers
US5711461A (en) * 1995-09-27 1998-01-27 Contico International, Inc. Liquid dispenser
US5715974A (en) * 1996-10-07 1998-02-10 Contico International, Inc. Trigger sprayer having central vent cylinder
US5752811A (en) * 1996-11-15 1998-05-19 Petro; John P. Linear actuator mechanism for converting rotary to linear movement including one end pulley Line attached to the stationary anchor and other end attached to the take-up drum
US9279349B2 (en) * 2008-02-08 2016-03-08 Flashlube Pty Ltd Lubricant delivery system for internal combustion engines
US20110083634A1 (en) * 2008-02-08 2011-04-14 Flashlube Pty Ltd Lubricant Delivery System for Internal Combustion Engines
AU2009212110B2 (en) * 2008-02-08 2013-09-19 Flashlube Pty Ltd Lubricant delivery system for internal combustion engines
USD588925S1 (en) 2008-04-02 2009-03-24 Mary Kay Inc. Container
USD621261S1 (en) 2008-04-02 2010-08-10 Mary Kay Inc. Container
USD588916S1 (en) 2008-04-02 2009-03-24 Mary Kay Inc. Container
EP2884089A1 (fr) * 2013-12-10 2015-06-17 Robert Bosch Gmbh Coupleur hydraulique
US10184528B2 (en) 2015-08-07 2019-01-22 Regal Beloit America, Inc. Coupling, drive assembly and associated method
CN108499769A (zh) * 2018-06-12 2018-09-07 湖南科道尔生物科技有限公司 一种具有延时自动喷液的高雾化装置
CN114368536A (zh) * 2022-03-03 2022-04-19 蓝山中西医结合医院有限公司 一种智能眼角膜保存装置
CN114368536B (zh) * 2022-03-03 2023-11-21 蓝山中西医结合医院有限公司 一种智能眼角膜保存装置
CN119258255A (zh) * 2024-12-10 2025-01-07 浙江龙威电器有限公司 多功能消毒装置

Also Published As

Publication number Publication date
FR2037496A5 (fr) 1970-12-31
DE2009553A1 (de) 1970-09-10
GB1291368A (en) 1972-10-04
BR7017186D0 (pt) 1973-01-23
JPS508207B1 (fr) 1975-04-02
NL7002209A (fr) 1970-09-07
GB1291367A (en) 1972-10-04
BE746727A (fr) 1970-09-02
IL33790A0 (en) 1970-03-22
IL33790A (en) 1972-10-29
ES377081A1 (es) 1973-02-01
HK15977A (en) 1977-04-15

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Legal Events

Date Code Title Description
AS Assignment

Owner name: WALTER E. HELLER AND COMPANY, INC., 101 PARK AVENU

Free format text: SECURITY INTEREST;ASSIGNOR:WAYNESBORO TEXTILES, INC., A CORP. OF VA.;REEL/FRAME:004377/0941

Effective date: 19850227