GB755096A - Remotely-controlled evacuating device for hydraulic jack - Google Patents

Remotely-controlled evacuating device for hydraulic jack

Info

Publication number
GB755096A
GB755096A GB35772/54A GB3577254A GB755096A GB 755096 A GB755096 A GB 755096A GB 35772/54 A GB35772/54 A GB 35772/54A GB 3577254 A GB3577254 A GB 3577254A GB 755096 A GB755096 A GB 755096A
Authority
GB
United Kingdom
Prior art keywords
jack
valve
piston
spring
cylinder
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
Application number
GB35772/54A
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.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB755096A publication Critical patent/GB755096A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/42—Constructional features with self-contained pumps, e.g. actuated by hand
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1433—End caps
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
    • H01H33/34—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator hydraulic

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

755,096. Hydraulic actuation of switches. GRATZMULLER, J. L. Dec. 10, 1954 [Dec. 24, 1953; July 30, 1954], No. 35772/54. Class 38(5) In a single-acting hydraulic jack which is actuated by liquid pressure against a counteracting force, means are provided giving a discharge rate of liquid greater than the feeding rate so that the return stroke of the jack is quicker than the forward stroke. The jack may be used to set a circuit breaker into contact-making position against the action of elastic means. A jack comprises a cylinder 3 and a, piston 4. a spring 5 ensuring the return stroke. For the forward stroke liquid from an accumulator 6 passes through ducts 8, 10 to the upper end of a cylinder 12 containing a piston 13, and through a passage 20 and past ball valve 21 in the piston to the lower end of the cylinder, thence through a port 14 to the jack cylinder. A spring 27 urges a valve 18 integral with the piston 13 on to its seat to close an outlet 15a. If a valve 7 is turned to connect the duct 8 to exhaust, piston 13 is raised, removing the valve 18 from its seat and enabling the liquid in the jack to pass to exhaust. The spring 27 may be replaced by a spring facilitating opening of the valve 18, in which case the spring urging the ball valve 21 to its closed position is strong enough to ensure sufficient differential pressure to hold valve 18 on to its seat.
GB35772/54A 1954-07-30 1954-12-10 Remotely-controlled evacuating device for hydraulic jack Expired GB755096A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1099949T 1954-07-30
FR300754X 1954-07-30

Publications (1)

Publication Number Publication Date
GB755096A true GB755096A (en) 1956-08-15

Family

ID=26214491

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35772/54A Expired GB755096A (en) 1954-07-30 1954-12-10 Remotely-controlled evacuating device for hydraulic jack

Country Status (3)

Country Link
CH (1) CH330972A (en)
FR (2) FR1099949A (en)
GB (1) GB755096A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113357221A (en) * 2021-06-29 2021-09-07 中船重工中南装备有限责任公司 Steel ball type hydraulic cylinder with bidirectional mechanical locking

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4011050A1 (en) * 1990-04-05 1991-10-10 Knorr Bremse Ag AIR PRESSURE ACTUATING CYLINDER

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113357221A (en) * 2021-06-29 2021-09-07 中船重工中南装备有限责任公司 Steel ball type hydraulic cylinder with bidirectional mechanical locking

Also Published As

Publication number Publication date
FR1099949A (en) 1955-09-14
CH330972A (en) 1958-06-30
FR73004E (en) 1960-09-22

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