FR2269487A1 - Pneumatic or hydraulic jack - has overlapped or interleaved flexible sheets forming envelope - Google Patents

Pneumatic or hydraulic jack - has overlapped or interleaved flexible sheets forming envelope

Info

Publication number
FR2269487A1
FR2269487A1 FR7513860A FR7513860A FR2269487A1 FR 2269487 A1 FR2269487 A1 FR 2269487A1 FR 7513860 A FR7513860 A FR 7513860A FR 7513860 A FR7513860 A FR 7513860A FR 2269487 A1 FR2269487 A1 FR 2269487A1
Authority
FR
France
Prior art keywords
overlapped
pneumatic
layers
hydraulic jack
flexible sheets
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
FR7513860A
Other languages
French (fr)
Other versions
FR2269487B1 (en
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.)
VETTER MANFRED DT
Original Assignee
VETTER MANFRED DT
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
Priority claimed from DE19757511066 external-priority patent/DE7511066U/en
Application filed by VETTER MANFRED DT filed Critical VETTER MANFRED DT
Publication of FR2269487A1 publication Critical patent/FR2269487A1/en
Application granted granted Critical
Publication of FR2269487B1 publication Critical patent/FR2269487B1/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
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/10—Characterised by the construction of the motor unit the motor being of diaphragm type
    • 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
    • B66F3/35—Inflatable flexible elements, e.g. bellows

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)
  • Laminated Bodies (AREA)

Abstract

The jack has a multi-layer envelope impermeable to air or liquid under pressure and textile-reinforced, its volume varying with internal pressure supplied via a union. It has two or more sheets, armoured if necessary, each comprising one or more layers of flexible and very strong material, in one piece or joined together along one or more edges by overlapping or interleaving of the layers. If required, one or more reinforcing strips can be provided, covering them or interleaved with their layers. The sheets can be rectangular or round, and one can include a layer of slightly elastic and impregnable cloth with wire woven into it.
FR7513860A 1974-05-04 1975-05-02 Pneumatic or hydraulic jack - has overlapped or interleaved flexible sheets forming envelope Granted FR2269487A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE7415621 1974-05-04
DE19757511066 DE7511066U (en) 1975-04-09 1975-04-09 LIFTING EQUIPMENT

Publications (2)

Publication Number Publication Date
FR2269487A1 true FR2269487A1 (en) 1975-11-28
FR2269487B1 FR2269487B1 (en) 1981-04-17

Family

ID=25947396

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7513860A Granted FR2269487A1 (en) 1974-05-04 1975-05-02 Pneumatic or hydraulic jack - has overlapped or interleaved flexible sheets forming envelope

Country Status (1)

Country Link
FR (1) FR2269487A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036472A (en) * 1976-11-09 1977-07-19 The B. F. Goodrich Company Pneumatic lifting device
US4948107A (en) * 1985-03-22 1990-08-14 The B. F. Goodrich Company Pneumatic lift jack
EP0626338A1 (en) * 1993-05-26 1994-11-30 Zumro B.V. Inflatable body
US5938179A (en) * 1994-05-25 1999-08-17 Res Q Technology, Inc. Bag and method of constructing the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036472A (en) * 1976-11-09 1977-07-19 The B. F. Goodrich Company Pneumatic lifting device
US4948107A (en) * 1985-03-22 1990-08-14 The B. F. Goodrich Company Pneumatic lift jack
EP0626338A1 (en) * 1993-05-26 1994-11-30 Zumro B.V. Inflatable body
US5938179A (en) * 1994-05-25 1999-08-17 Res Q Technology, Inc. Bag and method of constructing the same

Also Published As

Publication number Publication date
FR2269487B1 (en) 1981-04-17

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Legal Events

Date Code Title Description
ST Notification of lapse