Tools – Tool jaw – Jaw-actuating means
Reexamination Certificate
1999-02-05
2001-05-08
Smith, James G. (Department: 3723)
Tools
Tool jaw
Jaw-actuating means
C081S370000
Reexamination Certificate
active
06227080
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to locking grips of the type that allow a strong clamping force to be exerted for a long period of time, without intervention from the operator, on an object, or more frequently on two objects which need to be held together.
In order to give the tool a stable clamped position, a conventional latch lock or toggle mechanisms are designed to travel slightly beyond alignment at the end of clamping, relying for this on the elasticity of the parts. This leads to a serious drawback i.e. unclamping that of the locking grips leads to a sudden release of the elastic energy stored up during clamping, and this sudden release may cause an impact, which may be violent and dangerous, in the operator's hand.
SUMMARY OF THE INVENTION
The object of the present invention is to eliminate this drawback by providing locking grips of simple and ergonomic design that the operator can open while maintaining perfect control over this opening. In particular, if clamping has been achieved with just one hand, the operator will be able to open the locking grips with just one hand.
REFERENCES:
patent: 2532659 (1950-12-01), Burns
patent: 2711663 (1955-06-01), Petersen
patent: 2853910 (1958-09-01), Petersen
patent: 3958468 (1976-05-01), Weller
patent: 5014578 (1991-05-01), Flentge
patent: 5233893 (1993-08-01), Schmidt
patent: 2 072 081 (1981-09-01), None
Grayo Lucien Roger
Kerkovitz Marlène
Parovel Anne
Zerkovitz Jean-Paul
Zerkovitz Yves
Facom
Kerkovitz Marlène
Parovel Anne
Smith James G.
Wenderoth , Lind & Ponack, L.L.P.
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