Long nose locking plier

Details Long nose locking plier Long nose locking plier

1981-03-06

1985-09-17

Jones, Jr., James L.

Tools

Tool jaw

Jaw-actuating means

81418, B25B 712

Patent

active

045413126

ABSTRACT:
A long nose locking hand tool having a pair of opposing jaw members, a fixed handle and a movable handle and lever locking means therebetween for maintaining a toggle relationship between the jaws when in a closed position; and wherein each of said jaw members comprising a jaw face configuration having a total jaw length to average jaw height ratio of from about 6.5 to about 8.5 with a through jaw hardness range of from about 53 to about 57 Rockwell C, with said jaw members made of an alloy spring steel, said jaw members having a nominal parallel opening when they are spaced apart, approximately 3/16 inch, thereby enabling said jaw members to clamp a workpiece up to 3/16 inch thick with parallel jaw faces by flexing to the parallel condition when closed and returning to their original unstressed state when released of clamping pressure.

REFERENCES:
patent: D136188 (1843-08-01), Payne
patent: 591720 (1897-10-01), Armstrong
patent: 2590031 (1952-03-01), Petersen
patent: 2848810 (1958-08-01), Wendt
patent: 2853910 (1958-09-01), Petersen
patent: 3192804 (1965-07-01), Petersen et al.
patent: 3748733 (1973-07-01), McClellan
patent: 4023450 (1977-05-01), Ygfors
patent: 4208749 (1980-06-01), Hermann et al.

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