FR2405209A1 - Jack using pressurised bellows - has internal linkage to maintain upper surface in horizontal attitude - Google Patents

Jack using pressurised bellows - has internal linkage to maintain upper surface in horizontal attitude

Info

Publication number
FR2405209A1
FR2405209A1 FR7730066A FR7730066A FR2405209A1 FR 2405209 A1 FR2405209 A1 FR 2405209A1 FR 7730066 A FR7730066 A FR 7730066A FR 7730066 A FR7730066 A FR 7730066A FR 2405209 A1 FR2405209 A1 FR 2405209A1
Authority
FR
France
Prior art keywords
jack
horizontal attitude
bellows
plates
internal linkage
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
FR7730066A
Other languages
French (fr)
Other versions
FR2405209B1 (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.)
Dunlop France SA
Original Assignee
Dunlop France 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 Dunlop France SA filed Critical Dunlop France SA
Priority to FR7730066A priority Critical patent/FR2405209A1/en
Publication of FR2405209A1 publication Critical patent/FR2405209A1/en
Application granted granted Critical
Publication of FR2405209B1 publication Critical patent/FR2405209B1/fr
Granted 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
    • B66F3/35—Inflatable flexible elements, e.g. bellows

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Actuator (AREA)

Abstract

A jack for lifting heavy loads consists of a flexible bellows (1) mounted between upper and lower plates (3, 5). The plates are conected by two links (29a, 31a) in the form of a cross with a common pivot (33). One end of each lever is pivoted to one or other of the plates. The other end of each lever slides in a horizontal guide (53, 55) attached to the plates. When the bellows is filled with fluid at high pressure the upper plate is raised and is maintained in a horizontal attitude by means of the links.
FR7730066A 1977-10-06 1977-10-06 Jack using pressurised bellows - has internal linkage to maintain upper surface in horizontal attitude Granted FR2405209A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7730066A FR2405209A1 (en) 1977-10-06 1977-10-06 Jack using pressurised bellows - has internal linkage to maintain upper surface in horizontal attitude

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7730066A FR2405209A1 (en) 1977-10-06 1977-10-06 Jack using pressurised bellows - has internal linkage to maintain upper surface in horizontal attitude

Publications (2)

Publication Number Publication Date
FR2405209A1 true FR2405209A1 (en) 1979-05-04
FR2405209B1 FR2405209B1 (en) 1980-04-18

Family

ID=9196163

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7730066A Granted FR2405209A1 (en) 1977-10-06 1977-10-06 Jack using pressurised bellows - has internal linkage to maintain upper surface in horizontal attitude

Country Status (1)

Country Link
FR (1) FR2405209A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4786032A (en) * 1984-11-06 1988-11-22 Mangar Aids Limited Lifting apparatus
EP0308351A2 (en) * 1987-09-17 1989-03-22 Philippe Rothschild Extensible column with pneumatic control, and its use as a support, for example of a hospital bed
FR2620789A1 (en) * 1987-09-17 1989-03-24 Rothschild Philippe Pneumatically controlled extensible support device
FR2658495A1 (en) * 1990-02-16 1991-08-23 Sarazin Maurice Self lifting device with a low-pressure inflatable structure
EP0903317A1 (en) * 1997-09-23 1999-03-24 Vernon T Mullican Pneumatic jack

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4786032A (en) * 1984-11-06 1988-11-22 Mangar Aids Limited Lifting apparatus
EP0308351A2 (en) * 1987-09-17 1989-03-22 Philippe Rothschild Extensible column with pneumatic control, and its use as a support, for example of a hospital bed
FR2620789A1 (en) * 1987-09-17 1989-03-24 Rothschild Philippe Pneumatically controlled extensible support device
EP0308351A3 (en) * 1987-09-17 1989-10-25 Philippe Rothschild Extensible column with pneumatic control, and its use as a support, for example of a hospital bed
FR2658495A1 (en) * 1990-02-16 1991-08-23 Sarazin Maurice Self lifting device with a low-pressure inflatable structure
EP0903317A1 (en) * 1997-09-23 1999-03-24 Vernon T Mullican Pneumatic jack

Also Published As

Publication number Publication date
FR2405209B1 (en) 1980-04-18

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Legal Events

Date Code Title Description
ST Notification of lapse