Hydraulic cylinder and foot plate positioning device

Details Hydraulic cylinder and foot plate positioning device Hydraulic cylinder and foot plate positioning device

Filed on

1992-06-02

Date issued

1993-01-12

Examiner

Crow, Stephen R.

Patent Class

Exercise devices

SubClass

Involving user translation or physical simulation thereof

SubSubClass

Stair climbing

Other Related Categories

482908, 482112, A63B 2204

Type

Patent

Status

active

Patent number

051785927

Description

ABSTRACT:
A connecting device comprising a inverted U-shaped holder plate mounted on a foot plate, which has a stub tube at the bottom inserted in either of a row of longitudinally aligned holes on the foot plate and two eyed lugs at the top to which a hydraulic cylinder is pivoted, a cam inserted in between two opposite vertical side walls of the holder plate and disposed below the foot plate, and a T-shaped key inserted through two polygonal through holes on the two opposite vertical side walls of the holder plate and a polygonal hole on the cam to connect the cam to the holder plate permitting the holder plate to be firmly retained to the foot plate, wherein rotating the T-shaped key in one direction causes the holder plate to be tightened to the foot plate; rotating the T-shaped key in the reverse direction causes the holder plate to be loosened from the foot plate.

REFERENCES:
patent: 4838543 (1989-06-01), Armstrong et al.
patent: 5054770 (1991-10-01), Bull

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