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1. (US5205203) Hydraulic cylinder-piston unit provided with a mechanical safety device, particularly for pantograph type motor vehicle lifts

Office : United States of America
Application Number: 07418681 Application Date: 08.06.1989
Publication Number: 5205203 Publication Date: 27.04.1993
Grant Number: 5205203 Grant Date: 27.04.1993
Publication Kind : A
IPC:
B66F 3/30
B66F 7/08
F15B 15/26
B PERFORMING OPERATIONS; TRANSPORTING
66
HOISTING; LIFTING; HAULING
F
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
3
Devices, e.g. jacks, adapted for uninterrupted lifting of loads
24
fluid-pressure operated
25
Constructional features
30
Positive brakes or locks
B PERFORMING OPERATIONS; TRANSPORTING
66
HOISTING; LIFTING; HAULING
F
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
7
Lifting frames, e.g. for lifting vehicles; Platform lifts
06
with platforms supported by levers for vertical movement
08
hydraulically or pneumatically operated
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
15
Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
20
Other details
26
Locking mechanisms
Applicants: ROSSATO ERIDE
Inventors: Rossato Eride
Agents: Hoffman, Wasson & Gliter
Priority Data: 8415985 05.12.1985 IT
07110722 31.07.1987 US
Title: (EN) Hydraulic cylinder-piston unit provided with a mechanical safety device, particularly for pantograph type motor vehicle lifts
Abstract: front page image
(EN)

A hydraulic jack particularly intended for use in automobile lifts includes a safety stop mechanism including a fixed toothed rod and a piston-supported pawl mechanism which includes one or more stop members. Each of the stop members can be retracted, to allow the jack to collapse, by applying hydraulic pressure to the chamber above the piston.


Also published as:
EP0224914EP0293368AU1987068313WO/1987/003655