Clamping-type holder

Details Clamping-type holder Clamping-type holder

1980-05-09

1982-03-23

Marbert, James B.

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

Locking device

294 83AA, B66C 142

Patent

active

043209149

ABSTRACT:
A clamping-type article holder is described particularly useful for clamping test tubes in a conveyor system, the holder comprising a sleeve axially movable within a housing from a first position to a second position, and a plurality of balls carried by the housing and adapted to project through openings formed in one end of the sleeve for clamping the article when the sleeve is in the first position. The latter end of the sleeve is formed with a cam surface effective, upon axial movement of the sleeve to the second position, to withdraw the balls from the opening and thereby to release the article. The holder further includes an electro-magnet effective, when energized, to retain the sleeve in the article-releasing position, which electro-magnet is incapable, when the sleeve is in the article-clamping position, of moving the sleeve to the article-releasing position.

REFERENCES:
patent: 3337257 (1967-08-01), Brynsvold
patent: 3795420 (1974-03-01), Preston, Jr.

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