Clamp

Details Clamp Clamp

1990-07-27

1991-09-17

Watson, Robert C.

Work holders

Holder inserted within work aperture

Expandable mandrel

B23P 1526

Patent

active

050488058

ABSTRACT:
A clamp assembly for fastening and holding workpieces has a mandrel with flexible retaining fingers that are normally extended at a reference position for ease of insertion and removal from the workpiece, which assembly is secured to the workpiece by withdrawal of a spindle shaft coupled to the extending fingers to radially expand the fingers over a spreader bar. The spindle shaft and flexible fingers are maintained in the retracted and workpiece-securing position until rotation of an end cap disengages the secured retaining tabs from the spindle shaft and aligns them with planar surfaces for clamp recovery to the reference position by a biasing means.

REFERENCES:
patent: 2188450 (1940-01-01), Verdon-Roe
patent: 2271012 (1942-01-01), Hutchins
patent: 2321518 (1943-06-01), Rossmann
patent: 2365787 (1944-12-01), Wallace
patent: 2424309 (1947-07-01), Elvy
patent: 2463731 (1949-03-01), Whalen
patent: 2775155 (1956-12-01), Tompkins et al.
patent: 3096679 (1963-07-01), Jones
patent: 3196734 (1965-07-01), Finkle
patent: 3414253 (1968-12-01), Mewse
patent: 3424050 (1969-01-01), Burrow et al.
patent: 3568562 (1971-03-01), Harwood
patent: 4892449 (1990-01-01), Croxton

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