FR2414131A1 - Pneumatic jack with end stops formed by trapped air - has t=shaped members acting as retainers for balls of non-return valves - Google Patents

Pneumatic jack with end stops formed by trapped air - has t=shaped members acting as retainers for balls of non-return valves

Info

Publication number
FR2414131A1
FR2414131A1 FR7800504A FR7800504A FR2414131A1 FR 2414131 A1 FR2414131 A1 FR 2414131A1 FR 7800504 A FR7800504 A FR 7800504A FR 7800504 A FR7800504 A FR 7800504A FR 2414131 A1 FR2414131 A1 FR 2414131A1
Authority
FR
France
Prior art keywords
balls
return valves
retainers
pneumatic jack
shaped members
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.)
Granted
Application number
FR7800504A
Other languages
French (fr)
Other versions
FR2414131B1 (en
Inventor
Gerard Canu
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.)
Compagnie Parisienne dOutillage a Air Comprime SA
Original Assignee
Compagnie Parisienne dOutillage a Air Comprime SA
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 Compagnie Parisienne dOutillage a Air Comprime SA filed Critical Compagnie Parisienne dOutillage a Air Comprime SA
Priority to FR7800504A priority Critical patent/FR2414131A1/en
Publication of FR2414131A1 publication Critical patent/FR2414131A1/en
Application granted granted Critical
Publication of FR2414131B1 publication Critical patent/FR2414131B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/223—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston with a piston extension or piston recess which completely seals the main fluid outlet as the piston approaches its end position

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)

Abstract

The piston(2) of a pneumatic jack(1) is brought to rest at the end of the stroke by the piston rod(6) engaging lip seals and so trapping air. To ensure starting with the full force of the jack, non-return valves using steel balls(9) are fitted at each end of the cylinder (10). The balls are retained by T shaped pieces(5). The bar of the T is slightly curved and fits in the annular space(80) between the seals and end caps(3, 4). The down stroke of the T fits in a slot cut between the hole(9) for the ball and the annular space.
FR7800504A 1978-01-10 1978-01-10 Pneumatic jack with end stops formed by trapped air - has t=shaped members acting as retainers for balls of non-return valves Granted FR2414131A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7800504A FR2414131A1 (en) 1978-01-10 1978-01-10 Pneumatic jack with end stops formed by trapped air - has t=shaped members acting as retainers for balls of non-return valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7800504A FR2414131A1 (en) 1978-01-10 1978-01-10 Pneumatic jack with end stops formed by trapped air - has t=shaped members acting as retainers for balls of non-return valves

Publications (2)

Publication Number Publication Date
FR2414131A1 true FR2414131A1 (en) 1979-08-03
FR2414131B1 FR2414131B1 (en) 1980-08-22

Family

ID=9203242

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7800504A Granted FR2414131A1 (en) 1978-01-10 1978-01-10 Pneumatic jack with end stops formed by trapped air - has t=shaped members acting as retainers for balls of non-return valves

Country Status (1)

Country Link
FR (1) FR2414131A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2719510A (en) * 1951-07-21 1955-10-04 Tomkin Johnson Company Cushion construction for air cylinders

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2719510A (en) * 1951-07-21 1955-10-04 Tomkin Johnson Company Cushion construction for air cylinders

Also Published As

Publication number Publication date
FR2414131B1 (en) 1980-08-22

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Legal Events

Date Code Title Description
ST Notification of lapse