Roll-up jack stand

Details Roll-up jack stand Roll-up jack stand

1991-11-04

1992-10-06

Ramirez, Ramon O.

Supports

Stand

Standard type

248352, 254 94, F16M 1300

Patent

active

051524848

ABSTRACT:
My invention is a jack stand having a platform, a pair of uprights on the atform, a post swingable between the uprights, a vehicle engagement member at one end of the post, and a keeper releasably locking the post in a selected position. The keeper has a collar sliding on the post, fingers protruding from the collar, finger guiding rails connected to the uprights, and notches in the uprights which the fingers enter to lock the post in its selected position. The jack stand can have a clutch to arrest the post in a set position until the vehicle engages the jack stand. The jack stand can also have a mechanism to maximize resistance to rotation of the post as the jack stand attempts to leave its selected position. The mechanism may include a foot on the post interferingly engaging the platform as the post leaves the selected position. The mechanism can also include a connective linkage that operates to increase or maximize the arresting effect of the clutch just as the post departs the selected position.

REFERENCES:
patent: 1661882 (1928-03-01), Derrick
patent: 1666971 (1928-04-01), McCarty
patent: 3744757 (1973-07-01), White et al.
patent: 4813843 (1989-03-01), Gilmour et al.
patent: 4862727 (1989-09-01), Bergeron
patent: 5039070 (1991-08-01), Warner

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