EP0064958A3 - Improvements in motor-vehicle platform lifts - Google Patents

Improvements in motor-vehicle platform lifts

Info

Publication number
EP0064958A3
EP0064958A3 EP82830124A EP82830124A EP0064958A3 EP 0064958 A3 EP0064958 A3 EP 0064958A3 EP 82830124 A EP82830124 A EP 82830124A EP 82830124 A EP82830124 A EP 82830124A EP 0064958 A3 EP0064958 A3 EP 0064958A3
Authority
EP
European Patent Office
Prior art keywords
lift
cylinders
vehicle platform
fluid
lowering
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.)
Withdrawn
Application number
EP82830124A
Other languages
German (de)
French (fr)
Other versions
EP0064958A2 (en
Inventor
Alberto Bigini
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.)
Car Bench SpA
Original Assignee
Car Bench SpA
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 Car Bench SpA filed Critical Car Bench SpA
Publication of EP0064958A2 publication Critical patent/EP0064958A2/en
Publication of EP0064958A3 publication Critical patent/EP0064958A3/en
Withdrawn legal-status Critical Current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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
    • B66F7/16—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks
    • B66F7/20—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks by several jacks with means for maintaining the platforms horizontal during movement

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

A motor vehicle platform lift is provided of the four-­ column type. The lift comprises four hydraulic lifting cylin­ ders (2) each arranged in correspondence with a respective column of the lift, and four hydraulic pumps (6), each connected to a respective one of the cylinders (2) via a respective pipeline (10). Each of the pipelines (10) includes a respective non-return valve (14) operative to permit the passage of fluid from the corresponding pump (6) to its associated cylinder (2) whereby to provide for elevation of the platform lift and its maintenance at a desired height. The lift also includes control means (19) for neutralising the operation of the non-return valves (14) so as to permit lowering of the lift by allowing the return flow of fluid from the cylinders (2). In order to ensure that all four cylinders (2) operate in synchronism both during elevation and lowering of the platform lift, the drive shaft (6a) of the pumps (6) are made fast for rotation with each other.
EP82830124A 1981-05-12 1982-05-10 Improvements in motor-vehicle platform lifts Withdrawn EP0064958A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT21642/81A IT1137390B (en) 1981-05-12 1981-05-12 IMPROVEMENT IN BRIDGE LIFTS FOR VEHICLES
IT21642 1981-05-12

Publications (2)

Publication Number Publication Date
EP0064958A2 EP0064958A2 (en) 1982-11-17
EP0064958A3 true EP0064958A3 (en) 1985-01-09

Family

ID=11184742

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82830124A Withdrawn EP0064958A3 (en) 1981-05-12 1982-05-10 Improvements in motor-vehicle platform lifts

Country Status (3)

Country Link
EP (1) EP0064958A3 (en)
AU (1) AU8360382A (en)
IT (1) IT1137390B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4421866C1 (en) * 1994-06-22 1996-01-04 Daimler Benz Aerospace Airbus Lift device for handling assembly parts of aircraft galley
AUPN787096A0 (en) 1996-02-05 1996-02-29 Cornish, Mark Raymond Elevational vehicle ramp
US10106378B2 (en) 2015-11-03 2018-10-23 General Electric Company System and method for lifting with load moving machine

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201242A (en) * 1922-04-27 1923-07-27 John Edward Hamilton Improvements in and relating to hydraulic lifting & lowering apparatus
FR830019A (en) * 1937-03-17 1938-07-19 Verboom & Durouchard Ets Improvements to hydraulic cylinder batteries
US2342311A (en) * 1941-08-29 1944-02-22 Globe Hoist Co Vehicle hoist
US2602298A (en) * 1949-09-01 1952-07-08 Electrol Inc Equalizing valve for plural motor systems
DE1003933B (en) * 1955-07-25 1957-03-07 Toussaint & Hess Gmbh Hydraulic control for a device for raising and lowering a platform or the like by means of hydraulic lifting cylinders
DE1007487B (en) * 1954-03-26 1957-05-02 Karl Eugen Bomm Hydraulic drive of a lifting platform with several lifting rams
GB1107250A (en) * 1965-12-03 1968-03-27 Kismet Ltd Vehicle lifting systems
US3381833A (en) * 1965-10-30 1968-05-07 Clark Equipment Co Self-synchronizing load lifting and lowering system for straddle carriers and the like
CH482626A (en) * 1968-11-21 1969-12-15 Javo Ag Werkzeug Und App Bau Lifting device with at least two lifting columns
CH521285A (en) * 1970-03-24 1972-04-15 Kraft Paul Hydraulic actuation device for a lifting device
GB2010217A (en) * 1977-12-12 1979-06-27 Itt Hydraulic moving device

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201242A (en) * 1922-04-27 1923-07-27 John Edward Hamilton Improvements in and relating to hydraulic lifting & lowering apparatus
FR830019A (en) * 1937-03-17 1938-07-19 Verboom & Durouchard Ets Improvements to hydraulic cylinder batteries
US2342311A (en) * 1941-08-29 1944-02-22 Globe Hoist Co Vehicle hoist
US2602298A (en) * 1949-09-01 1952-07-08 Electrol Inc Equalizing valve for plural motor systems
DE1007487B (en) * 1954-03-26 1957-05-02 Karl Eugen Bomm Hydraulic drive of a lifting platform with several lifting rams
DE1003933B (en) * 1955-07-25 1957-03-07 Toussaint & Hess Gmbh Hydraulic control for a device for raising and lowering a platform or the like by means of hydraulic lifting cylinders
US3381833A (en) * 1965-10-30 1968-05-07 Clark Equipment Co Self-synchronizing load lifting and lowering system for straddle carriers and the like
GB1107250A (en) * 1965-12-03 1968-03-27 Kismet Ltd Vehicle lifting systems
CH482626A (en) * 1968-11-21 1969-12-15 Javo Ag Werkzeug Und App Bau Lifting device with at least two lifting columns
CH521285A (en) * 1970-03-24 1972-04-15 Kraft Paul Hydraulic actuation device for a lifting device
GB2010217A (en) * 1977-12-12 1979-06-27 Itt Hydraulic moving device

Also Published As

Publication number Publication date
IT8121642A0 (en) 1981-05-12
EP0064958A2 (en) 1982-11-17
AU8360382A (en) 1982-11-18
IT1137390B (en) 1986-09-10

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LU NL SE

PUAL Search report despatched

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AK Designated contracting states

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STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19850909

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BIGINI, ALBERTO