Operating and bracing jack having an internal locking mechanism

Details Operating and bracing jack having an internal locking mechanism Operating and bracing jack having an internal locking mechanism

1978-08-21

1982-04-06

Hershkovitz, Abraham

Motors: expansible chamber type

Fluid supply through diverse paths to single expansible chamber

Position responsive

91405, 92 21MR, 92 26, 92 27, F15B 1522

Patent

active

043230016

ABSTRACT:
A bracing jack comprising a cylinder and a jack bar slidable in the cylinder from a bar extended position to a bar retracted position, the jack having an internal locking mechanism including a hydraulic and a mechanical actuator for unlocking under load.

REFERENCES:
patent: Re27294 (1972-02-01), Fredd
patent: 2349244 (1944-05-01), Brown
patent: 3315568 (1967-04-01), Fredd
patent: 4024800 (1977-05-01), Masclet

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