US3818805A - Piston and cylinder apparatus with cleaning arrangement - Google Patents

Piston and cylinder apparatus with cleaning arrangement Download PDF

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Publication number
US3818805A
US3818805A US00369255A US36925573A US3818805A US 3818805 A US3818805 A US 3818805A US 00369255 A US00369255 A US 00369255A US 36925573 A US36925573 A US 36925573A US 3818805 A US3818805 A US 3818805A
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US
United States
Prior art keywords
piston
cylinder
annular
seals
zones
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
Application number
US00369255A
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English (en)
Inventor
B Johansson
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.)
Alfa Laval AB
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Alfa Laval AB
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Filing date
Publication date
Application filed by Alfa Laval AB filed Critical Alfa Laval AB
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Publication of US3818805A publication Critical patent/US3818805A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/02—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
    • G01F11/04—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the free-piston type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/26—Methods or devices for controlling the quantity of the material fed or filled
    • B65B3/30—Methods or devices for controlling the quantity of the material fed or filled by volumetric measurement
    • B65B3/32—Methods or devices for controlling the quantity of the material fed or filled by volumetric measurement by pistons co-operating with measuring chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/044—Removal or measurement of undissolved gas, e.g. de-aeration, venting or bleeding
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/02—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
    • G01F11/021—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type
    • G01F11/023—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type with provision for varying the stroke of the piston
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/12—Cleaning arrangements; Filters

Definitions

  • the piston has annular seals which, in a cleaning position of the piston, are located in respective separated Zones of the'cylinder where its internal diameter is greater than the diameter of the seals, so that cleaning liquid-from an inlet opening of the cylinder can be forced directly into one of these zones, thence to the other zone by way of a longitudinal recess in the piston, and then through an outlet opening of the cylinder, whereby the two seals are flushed.
  • Limiting means are provided which, during normal reciprocation of the piston, prevent it from moving to this cleaning position but which are adjustable to permit such movement when cleaning is desired.
  • the present invention relates to an apparatus comprising a cylinder and apiston adapted to reciprocate therein between two end positions, and having annular sealing means ateach of its ends, the cylinder being provided with at least one opening on each side of the piston which serves as inlet and outlet for liquid.
  • the piston may be reciprocated within the cylinder either by a piston rod connected therewith or by means of the liquid which is supplied to the cylinder, by causing the liquid pressure to act alternately on opposite sides of the piston.
  • the apparatus be adapted to constitute one of several interconnected units in a plant arranged to be cleaned in such a manner that the same'cleaning liquid is forced through all of the plant units in sequence.
  • the cleaning operation must be performed so that the piston is allowed to continue its reciprocating movements. as in normal operation, the apparatus being passed through by cleaning liquid instead of liquid to be measured.
  • the piston sealing means will not be effectively cleaned, however, and the piston movements cause a discontinuous flow of cleaning liquid through the apparatus and thus through the entire plant. This makes it difficult or impossible to effectively clean other units of the plant'which are interconnected with the particular apparatus.
  • the inside of the cylinder of the apparatus has two axially separated annular zones in which the internal diameter, of the cylinder along a substantial part of its periphery is greater than the diameter of the piston sealing means, one of the zones being in communication with one of the cylinder openings, and the other zone being situated between the first zone and the other cylinder opening.
  • the piston has between its sealing means at least one recess, the axial extension of which is larger than the distance between the parts of the two annular zones situated nearest each other; and limiting means are provided which, during the normal reciprocating movements of the piston, prevent the piston from moving so far in the direction towards the said one annular zone that the piston recess will come into communication therewith.
  • Such limiting means are adjustable to allow such a piston movement to a position in which the two piston sealing means are situated opposite the respective annular zones, whereby the piston recess interconnects these two zones so that liquid may flow past the piston within the cylinder.
  • the piston On cleaning of an apparatus constructed in this way, the piston will thus occupy a special position at one end of the cylinder, andcleaning liquid will be forced past the same. A strong-flow of cleaning liquid may be forced to pass continuously'through the apparatus, so that the "two piston sealing means will be effectively rinsed and other units in the same plant, interconnected in a sequence with the apparatus, 'will also be effectively cleaned.
  • the cylinder and the piston may be shaped in different manners.
  • the cylinder has an annular recess in each of the said zones, while the piston has a number of axially extending recesses evenly distributed around its periphery.
  • the piston has a number of axially extending recesses evenly distributed around its periphery.
  • the piston may be provided with a recess extending around the whole of its periphery, the cylinder instead being provided in the said zones with axially extending
  • one of the cylinder openings is situated in the recess of the said first annular zone.
  • the adjustable means for limiting the piston movement in one direction within the cylinder may be constructed in different ways depending upon the arrangement used for driving the piston. If the piston is arranged to be drivenby the pressureof the liquid supplied to the cylinder, the said means may comprise a member forming an axially movable wall within the c y]- inder, arranged to seal against the inside of the cylinder. This wall may border on a pressure chamber which is arranged to be connected to a fluid source, preferably a liquid source.
  • FIG. 1 is a flow diagram of a system including an apparatus according to the invention
  • FIGS. 2 and 3 are longitudinal sectional views of one form of apparatus according to the invention
  • FIG. 4 is a crosssectional view along the line IV IV in FIG. 2.
  • a cylinder 1 contains a piston 2 reciprocable therein between two end positions.
  • An inlet conduit 3 opens into the cylinder and an outlet conduit 4 leads from the cylinder at one side of the piston 2, and an inlet conduit 5 opens into the cylinder and a outlet conduit 6 leads from the cylinder at the other side of the piston.
  • the two inlet conduits 3 and 5 start from a common conduit 7, and the two outlet conduits 4 and 6 open into a common conduit 8.
  • shut-off valves 9-12 which, via connections 13-16, are connected to a common control unit 17;
  • the conduit 7, common to the inlet conduits, leads from a container 18.
  • a pump 19 in the conduit 7 is arranged to pump liquid from the container 18 to and through the cylinder 1.
  • liquid is constantly pumped to the inlet conduits 3 and 5.
  • the inlet valve 9 is kept open and the inlet valve 11 is kept closed by means of the control unit 17.
  • the outlet valve 12 is kept open and the outlet valve 10 is kept closed.
  • the piston 2 will then move downwards, as seen in FIG. 1, so that liquid situated below the piston is forced out through the conduit 6 and further through the conduit 8.
  • the piston 2 reaches its lower position, this is sensed in a conventional manner, as by mechanical, electrical or magnetic means (not shown), a signal being transferred to the control unit 17 so that it acts to close the valves 9 and 12 and open the valves 10 and 11.
  • the apparatus is provided at the bottom with means for controlling the length of the piston stroke in the cylinder, and on the top the apparatus is provided with means for putting the piston in a particular position when the apparatus is to be cleaned.
  • the means for controlling of the length of the piston stroke comprises a rod which extends into the cylinder 1 through its lower end wall 21.
  • the rod 20 is axially movable within the cylinder and may be set in a desired position for limiting the downward movement of the piston 2.
  • a sealing ring 22 is arranged between the piston 20 and the cylinder end wall 21.
  • the cylinder 1 is provided at the top with an end wall 23 axially movable therein.
  • a sealing ring 24 is arranged between this end wall and the inside of the cylinder l.
  • the end wall 23 has a lower part 2311 with a smaller diameter than the inside of the cylinder, which part extends into the cylinder and limits the upward movement of the piston 2.
  • the end wall 23 borders on a pressure chamber 25 which is formed by a cap 26 fastened to the cylinder by means of a screw 26a.
  • a guiding pin 27 connected to the end wall 23 extends out through an opening in the cap 26.
  • the pressure chamber 25 has an opening 28 which communicates through a conduit 29 with a liquid source, schematically shown at 30.
  • shut-off valve 30a which is connected to the control unit 17 of the apparatus.
  • the valve 300 When the valve 300 is closed, a certain amount of liquid is enclosed in the pressure chamber 25, the end wall 23 being prevented from moving into the pressure chamber.
  • the valve 30a When the valve 30a is opened, an over-pressure prevailing within the cylinder 1 is allowed to displace the end wall 23 into the pressure chamber, so that liquid therein is forced back through the conduit 29 to the liquid source 30.
  • the cylinder 1 Opposite the inlet 3 and the outlet 4, the cylinder 1 has on its inside an annular recess 31.
  • the piston 2 is provided at its ends with grooves 32 and 33 which receive sealing rings 34 and 35, respectively.
  • the recess 36 prevents gas accompanying the liquid into the cylinder from accumulating therein below the piston.
  • the piston 2 has three axially extending recesses 37 evenly distributed around its periphery. These recesses are intended to be used upon cleaning of the apparatus, which is performed in the following manner:
  • the inlet valve 9 and the outlet valve 12 are closed, while the inlet valve 11 and the outlet valve 10 are kept open.
  • the mechanism (not shown) for the reciprocating movement of the piston 2 is disconnected, and a cleaning liquid is pumped in through the inlet conduit 5.
  • the valve 30a in the conduit 29 communicating with the pressure chamber 25 is opened.
  • the piston 2 then is displaced at first to its upper end position against end wall 23, after which the pressure from the cleaning liquid causes the piston to force the cylinder end wall 23 upward into the pressure chamber (see FIG. 3).
  • the liquid therein is forced out through the opening 28 and further through the conduit 29 to the liquid source 30.
  • valves 9-12 can be maintained in an open position by the control unit 17 during one stage of a cleaning operation.
  • each piston recess 37 communicates at its lower end through an opening 38 with the groove 33 for one sealing means 35 of the piston.
  • the piston recesses 37 communicate at their upper ends with the groove 32 for the other sealing means 34 of the piston.
  • the grooves 32 and 33 preferably have a dovetail cross section.
  • Apparatus comprising a cylinder, a piston reciprocable in the cylinder between two end positions and having an annular seal at each end of the piston, whereby said seals are interposed between the interior portions of the cylinder on opposite sides of the piston, the cylinder having at least one opening on each side of the piston, said openings serving as inlet and outlet for liquid, the inside of the cylinder having two annular zones which are axially separated from each other and in which the internal diameter of the cylinder along a substantial part of its periphery is larger than the diameter of said annular seals, the first of said zones communicating with one of said cylinder openings, the second zone being located between said first zone and the other cylinder opening, the piston having between said seals at least one recess which extends in the axial direction of the cylinder for a distance greater than the f distance separating said annular zones, and limiting means operable during normal reciprocation of the piston to prevent movement of the piston so far toward said first annular zone that said piston recess will come into communication with said first zone
  • said limiting means define a pressure chamber on which said wall member borders and which is located on the side of said wall member remote from the piston, said limiting means also including a fluid supply line connected to said pressure chamber.
  • said limiting means also include a normally closed valve in said supply line for trapping fluid in said chamber to hold said wall member against displacement'by the piston, said valve being adjustable to an open position to permit escape of fluid from said chamber and thereby release the wall member to allow movement of the piston to its said cleaning position.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Basic Packing Technique (AREA)
  • Actuator (AREA)
  • Sampling And Sample Adjustment (AREA)
US00369255A 1972-06-19 1973-06-12 Piston and cylinder apparatus with cleaning arrangement Expired - Lifetime US3818805A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE08042/72A SE364112B (sv) 1972-06-19 1972-06-19

Publications (1)

Publication Number Publication Date
US3818805A true US3818805A (en) 1974-06-25

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Family Applications (1)

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US00369255A Expired - Lifetime US3818805A (en) 1972-06-19 1973-06-12 Piston and cylinder apparatus with cleaning arrangement

Country Status (10)

Country Link
US (1) US3818805A (sv)
JP (1) JPS5731086B2 (sv)
AU (1) AU470706B2 (sv)
CA (1) CA984669A (sv)
DE (1) DE2329737A1 (sv)
FR (1) FR2190224A5 (sv)
GB (1) GB1402373A (sv)
IT (1) IT989282B (sv)
NL (1) NL171839C (sv)
SE (1) SE364112B (sv)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3922115A (en) * 1972-08-23 1975-11-25 Metering Pumps Limited Pump
US3975986A (en) * 1975-02-03 1976-08-24 Tenneco Inc. Weep hole for hydraulic jack
US4029290A (en) * 1975-05-21 1977-06-14 Anchor/Darling Valve Company In service exercisable tilt disc check valve
US4075931A (en) * 1975-10-09 1978-02-28 Caldwell Melvin R Lift-jack fluid motor for hydraulic lift trucks
US4076210A (en) * 1974-03-02 1978-02-28 Schloemann-Siemag Aktiengesellschaft Hydraulic valve
US4077608A (en) * 1977-01-04 1978-03-07 Auto Specialties Manufacturing Company Hydraulic hand jack
US4230985A (en) * 1978-01-12 1980-10-28 Fairchild Camera And Instrument Corporation Fixturing system
US4275641A (en) * 1978-12-11 1981-06-30 Zahnradfabrik Friedrichshafen Ag Hydraulic servo cylinder and piston
US4304410A (en) * 1979-09-20 1981-12-08 Kobe, Inc. Sealing structure for reciprocating pistons exposed to high pressure differentials
US4323002A (en) * 1977-08-10 1982-04-06 Fletcher Sutcliffe Wild Limited Hydraulic equipment
US4348162A (en) * 1979-11-30 1982-09-07 Consumers Glass Company Limited Combination autoclave pump and nozzle
US4432556A (en) * 1983-06-01 1984-02-21 The United States Of America As Represented By The Secretary Of The Navy Piston sealing arrangement for a cryogenic refrigerator
US4513943A (en) * 1982-09-17 1985-04-30 Sulzer Brothers Limited Pressure medium actuated servo-motor system
US4527502A (en) * 1983-06-18 1985-07-09 Krup MaK Maschinenbau GmbH Expelling mechanism for discharge tubes and drain tubes of submarines
US4667748A (en) * 1982-09-30 1987-05-26 Atlas Copco Aktiebolag Method of driving an element and an hydraulic impactor
US4691620A (en) * 1985-04-19 1987-09-08 Board Of Trustees Of The University Of Kentucky Self-flushing fluid seal assembly
US4784371A (en) * 1987-07-16 1988-11-15 Hein-Werner Corporation Hydraulic jack having a small diameter bleed part in the cylinder wall
US4798128A (en) * 1986-07-16 1989-01-17 Koganei Ltd. Double acting cylinder unit
US5620524A (en) * 1995-02-27 1997-04-15 Fan; Chiko Apparatus for fluid delivery in chemical vapor deposition systems
US5946912A (en) * 1998-05-27 1999-09-07 Hung; Michael Oil return loop of a hydraulic cylinder
US20050152787A1 (en) * 2004-01-12 2005-07-14 Oglesby Kenneth D. High pressure slurry piston pump
WO2007016943A1 (en) * 2005-08-08 2007-02-15 Carrier Corporation Fluid engine or pump and method of operating an installation comprising a fluid engine or pump
US20080193299A1 (en) * 2007-02-12 2008-08-14 Kenneth Doyle Oglesby High pressure slurry plunger pump
US8056251B1 (en) 2009-09-21 2011-11-15 Regency Technologies Llc Top plate alignment template device
EP2940436A1 (fr) * 2014-04-30 2015-11-04 Tremark Technologies Inc. Machine doseuse à démontage automatisé
US10605276B2 (en) 2015-05-12 2020-03-31 Kongsberg Automotive As Position dependent valve device for control cylinder
CN112024495A (zh) * 2020-07-08 2020-12-04 西安航空制动科技有限公司 一种飞机刹车装置的汽缸座清洗工装

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS549659A (en) * 1977-06-22 1979-01-24 Bridgestone Tire Co Ltd Feeder for liquid measurement
FR2476501B1 (fr) * 1980-02-21 1988-07-08 Toray Industries Procede et appareil de preparation d'un melange fluide dose avec precision
FR2563492A1 (fr) * 1984-04-25 1985-10-31 Bio Merieux Dispositif de dosage et de repartition de petits volumes de liquide
DE4219947C2 (de) * 1992-06-18 1995-10-19 Kugler Julius & Co Gmbh Portioniereinrichtung für Medien
US6026991A (en) * 1998-10-28 2000-02-22 The Lubrizol Corporation Apparatus, system, and method for additizing a liquid product

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1458702A (en) * 1921-05-31 1923-06-12 Universe Corp Compressor
US2616522A (en) * 1948-04-27 1952-11-04 Philips Lab Inc Lubricating means for reciprocatory member in a high-pressure chamber and blowoff means therefor
US2899248A (en) * 1959-08-11 Hydraulic pump
US2902007A (en) * 1957-05-31 1959-09-01 Allis Chalmers Mfg Co Cylinder piston assembly with pressure relieving means
US3004524A (en) * 1960-07-20 1961-10-17 Austin Hydraulic cylinder and piston arrangement
US3203246A (en) * 1962-04-13 1965-08-31 Casco Products Corp Blow-off valve and pressure indicator for fire extinguishers
US3626807A (en) * 1969-10-21 1971-12-14 Kenneth B Shartzer Adjustable stroke cylinders

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899248A (en) * 1959-08-11 Hydraulic pump
US1458702A (en) * 1921-05-31 1923-06-12 Universe Corp Compressor
US2616522A (en) * 1948-04-27 1952-11-04 Philips Lab Inc Lubricating means for reciprocatory member in a high-pressure chamber and blowoff means therefor
US2902007A (en) * 1957-05-31 1959-09-01 Allis Chalmers Mfg Co Cylinder piston assembly with pressure relieving means
US3004524A (en) * 1960-07-20 1961-10-17 Austin Hydraulic cylinder and piston arrangement
US3203246A (en) * 1962-04-13 1965-08-31 Casco Products Corp Blow-off valve and pressure indicator for fire extinguishers
US3626807A (en) * 1969-10-21 1971-12-14 Kenneth B Shartzer Adjustable stroke cylinders

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3922115A (en) * 1972-08-23 1975-11-25 Metering Pumps Limited Pump
US4076210A (en) * 1974-03-02 1978-02-28 Schloemann-Siemag Aktiengesellschaft Hydraulic valve
US3975986A (en) * 1975-02-03 1976-08-24 Tenneco Inc. Weep hole for hydraulic jack
US4029290A (en) * 1975-05-21 1977-06-14 Anchor/Darling Valve Company In service exercisable tilt disc check valve
US4075931A (en) * 1975-10-09 1978-02-28 Caldwell Melvin R Lift-jack fluid motor for hydraulic lift trucks
US4077608A (en) * 1977-01-04 1978-03-07 Auto Specialties Manufacturing Company Hydraulic hand jack
US4323002A (en) * 1977-08-10 1982-04-06 Fletcher Sutcliffe Wild Limited Hydraulic equipment
US4230985A (en) * 1978-01-12 1980-10-28 Fairchild Camera And Instrument Corporation Fixturing system
US4275641A (en) * 1978-12-11 1981-06-30 Zahnradfabrik Friedrichshafen Ag Hydraulic servo cylinder and piston
US4304410A (en) * 1979-09-20 1981-12-08 Kobe, Inc. Sealing structure for reciprocating pistons exposed to high pressure differentials
US4348162A (en) * 1979-11-30 1982-09-07 Consumers Glass Company Limited Combination autoclave pump and nozzle
US4513943A (en) * 1982-09-17 1985-04-30 Sulzer Brothers Limited Pressure medium actuated servo-motor system
US4667748A (en) * 1982-09-30 1987-05-26 Atlas Copco Aktiebolag Method of driving an element and an hydraulic impactor
US4432556A (en) * 1983-06-01 1984-02-21 The United States Of America As Represented By The Secretary Of The Navy Piston sealing arrangement for a cryogenic refrigerator
US4527502A (en) * 1983-06-18 1985-07-09 Krup MaK Maschinenbau GmbH Expelling mechanism for discharge tubes and drain tubes of submarines
US4691620A (en) * 1985-04-19 1987-09-08 Board Of Trustees Of The University Of Kentucky Self-flushing fluid seal assembly
US4798128A (en) * 1986-07-16 1989-01-17 Koganei Ltd. Double acting cylinder unit
US4784371A (en) * 1987-07-16 1988-11-15 Hein-Werner Corporation Hydraulic jack having a small diameter bleed part in the cylinder wall
US5620524A (en) * 1995-02-27 1997-04-15 Fan; Chiko Apparatus for fluid delivery in chemical vapor deposition systems
US5946912A (en) * 1998-05-27 1999-09-07 Hung; Michael Oil return loop of a hydraulic cylinder
US7118349B2 (en) 2004-01-12 2006-10-10 Kenneth Doyle Oglesby High pressure slurry piston pump
US20050152787A1 (en) * 2004-01-12 2005-07-14 Oglesby Kenneth D. High pressure slurry piston pump
WO2007016943A1 (en) * 2005-08-08 2007-02-15 Carrier Corporation Fluid engine or pump and method of operating an installation comprising a fluid engine or pump
US20080193299A1 (en) * 2007-02-12 2008-08-14 Kenneth Doyle Oglesby High pressure slurry plunger pump
US7794215B2 (en) * 2007-02-12 2010-09-14 Regency Technologies Llc High pressure slurry plunger pump with clean fluid valve arrangement
US8056251B1 (en) 2009-09-21 2011-11-15 Regency Technologies Llc Top plate alignment template device
EP2940436A1 (fr) * 2014-04-30 2015-11-04 Tremark Technologies Inc. Machine doseuse à démontage automatisé
FR3020677A1 (fr) * 2014-04-30 2015-11-06 Tremark Technologies Inc Machine doseuse a demontage automatise
US10605276B2 (en) 2015-05-12 2020-03-31 Kongsberg Automotive As Position dependent valve device for control cylinder
CN112024495A (zh) * 2020-07-08 2020-12-04 西安航空制动科技有限公司 一种飞机刹车装置的汽缸座清洗工装

Also Published As

Publication number Publication date
FR2190224A5 (sv) 1974-01-25
JPS4964464A (sv) 1974-06-21
GB1402373A (en) 1975-08-06
AU5564173A (en) 1974-11-14
AU470706B2 (en) 1976-03-25
IT989282B (it) 1975-05-20
DE2329737A1 (de) 1974-01-24
CA984669A (en) 1976-03-02
NL7307954A (sv) 1973-12-21
JPS5731086B2 (sv) 1982-07-02
SE364112B (sv) 1974-02-11
NL171839C (nl) 1983-05-16

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