Tools – Tool jaw – Handle
Reexamination Certificate
1999-09-09
2001-04-10
Smith, James G. (Department: 3723)
Tools
Tool jaw
Handle
C030S340000
Reexamination Certificate
active
06212979
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to anti-slide covers for toggle operated pliers.
2. Description of the Related Art
Pliers are often provided with plastic covers on the handles thereof to avoid slippage when clamping an object between the jaws of the pliers. The plastic covers are generally formed by means of immersing the handles of the pliers in a liquid bath. The liquid hardens and thus forms an anti-slip layer on each metal handle. Nevertheless, such a process cannot be used on toggle lever operated pliers (e.g., toggle lever operated pliers disclosed in U.S. Pat. No. 2,478,696 to Isele issued on Aug. 9, 1949 and in U.S. Pat. No. 2,592,803 to Heim issued on Apr. 15, 1952), as the plastic cover will cause malfunction of the toggle link and other movable elements. Thus, the user has to firmly hold the pliers to prevent the pliers from slipping through the hands. This causes operational inconvenience.
The present invention is intended to provide anti-slide covers that mitigate and/or obviate the above problems.
SUMMARY OF THE INVENTION
In accordance with a first aspect of the invention, an anti-slide cover is provided for a pair of toggle operated pliers of the type including a first handle with an adjusting screw attached thereto, a second handle, and a toggle link pivotally connected between the first handle and the second handle. The anti-slide cover is detachably attached to the first handle and comprises a compartment for fittingly embracing a portion of the first handle. The anti-slide cover is prevented from disengaging from the first handle by a head of the adjusting screw.
The anti-slide cover further includes a cutout in an inner lateral side thereof to allow movement of the toggle link in the cutout. The anti-slide cover may include a plurality of recesses for grasping by the fingers. The anti-slide cover further includes an end opening for receiving an end of the first handle that has a screw hole threadedly engaged with the adjusting screw.
In accordance with a second aspect of the invention, an anti-slide cover is provided for a pair of toggle operated pliers of the type including a first handle, a second handle, a toggle link pivotally connected between the first handle and the second handle, and a release lever having an end pivotally connected to the second handle by a first pin, the first pin includes two first exposed enlarged ends, the toggle link including an end pivotally connected to the second handle by a second pin, the second pin including two second exposed enlarged ends. The anti-slide cover is detachably attached to the second handle and comprises a compartment for fittingly embracing a portion of the second handle. The anti-slide cover includes two side walls each having a first depression for releasably engaging with an associated said first exposed enlarged end and a second depression for releasably engaging with an associated said second exposed enlarged end. The anti-slide cover further may include a tenon, and the second handle may include a mortise for releasably engaging with the tenon. The anti-slide cover further includes a recessed section for grasping by the thumb.
In accordance with a third aspect of the invention, an anti-slide arrangement is provided for a pair of toggle operated pliers of the type including a first handle with an adjusting screw attached thereto, a second handle, a toggle link pivotally connected between the first handle and the second handle, and a release lever having an end pivotally connected to the second handle by a first pin, the first pin including two first exposed enlarged ends, the toggle link including an end pivotally connected to the second handle by a second pin, the second pin including two second exposed enlarged ends. The anti-slide arrangement comprises:
a first anti-slide cover detachably attached to the first handle and comprising a first compartment adapted to fittingly embrace a portion of the first handle, the first anti-slide cover being prevented from disengaging from the first handle by a head of the adjusting screw; and
a second anti-slide cover detachably attached to the second handle and comprising a second compartment adapted to fittingly embrace a portion of the second handle, the second anti-slide cover including two side walls each having a first depression for releasably engaging with an associated said first exposed enlarged end and a second depression for releasably engaging with an associated said second exposed enlarged end.
The anti-slide covers of the present invention can be conveniently, rapidly, and detachably attached to the handles of toggle operated pliers without interfering with operation of the pliers.
REFERENCES:
patent: 1096602 (1914-05-01), Coles
patent: 2520355 (1950-08-01), Bell
patent: 4811637 (1989-03-01), McCleary
patent: 4942791 (1990-07-01), Stewart et al.
patent: 5216780 (1993-06-01), Lutzke et al.
patent: 5823077 (1998-10-01), Macor
patent: 5910174 (1999-06-01), Finn
patent: 391016 (1924-02-01), None
patent: 125723 (1961-02-01), None
patent: 641521 (1962-06-01), None
Kamrath Alan
Rider Bennett Egan & Arundel, LLP.
Shakeri Hadi
Smith James G.
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