Hand tool or improved bar clamp

Details Hand tool or improved bar clamp Hand tool or improved bar clamp

1991-01-10

1992-03-10

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Slidable jaw adjustments

81182, 81487, 269169, B25B 1312

Patent

active

050941313

ABSTRACT:
A bar clamp having a fixed jas and a movable jaw which is radially movable over both short and long distances to clamp against a workpiece and is operable using one hand with complete control by the operator at all times. The jaws may either face one another while being mounted on the same dise of a handle/grip assembly or face in opposite directions while being mounted on opposite sides of the handle/grip assembly whereby they may be incrementally advanced by the trigger handle/driving lever. Another embodiment uses a substrate comprising a plurality of apertures to receive posts thus acting as a vise type of clamp/wrench.

REFERENCES:
patent: 753837 (1904-03-01), Barcus
patent: 1739488 (1929-12-01), Thayer
patent: 2149541 (1939-03-01), Nagle
patent: 3096975 (1963-07-01), Irwin
patent: 4563921 (1986-01-01), Wallace
patent: 4647027 (1987-03-01), Shafto
patent: 4867427 (1989-09-01), Cunningham
patent: 4901990 (1990-02-01), Frechette
patent: 4926722 (1990-05-01), Surensen et al.
patent: 4932638 (1990-06-01), Chen

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