Means for securing an observation instrument to a supporting sta

Details Means for securing an observation instrument to a supporting sta Means for securing an observation instrument to a supporting sta

1981-12-03

1984-05-08

Henry, Jon W.

Joints and connections

Interfitted members with external bridging piece

350516, 403 90, G02B 2124, F16C 1106

Patent

active

044471394

ABSTRACT:
The invention contemplates a universal-action joint for adjustable mounting of an observation instrument upon a support, such as a conventional floor stand. The joint is of the ball and socket variety but incorporates two separate means for frictionally loading the parts against relative displacement. The first of these loadings is resilient and at a minimum level, designed to lightly retain an adjusted positioning; the second loading is selectively applied for much greater frictional engagement, to the point of effectively locking the parts against dislodgment from adjusted position.

REFERENCES:
patent: 1757305 (1930-05-01), Graham
patent: 2009401 (1935-07-01), Hufferd et al.
patent: 2256763 (1941-09-01), Reed
patent: 3401999 (1968-09-01), Kephart et al.
patent: 3409317 (1968-11-01), Richards
patent: 3691788 (1972-09-01), Mazziotti

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