Pliers with biasing element

Tools – Tool jaw – Resiliently urged

Patent

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Details

30261, B25B 702

Patent

active

058933077

ABSTRACT:
A pair of pliers including a first plier element having a first handle portion and a first jaw portion defining a plurality of first protections. A deflected beam biasing element including a distal end is integrally formed with the first plier element. A second plier element includes a second handle portion, a second jaw portion defining a plurality of second projections, a contact surface having a first end and a second end, and a stop disposed proximate to the first end. A pivot element is provided to pivotally secure the first prier element to the second plier element so that relative pivoting movement of the first handle portion towards the second handle portion causes the first jaw portion to move towards the second jaw portion, the first end is disposed closer to the pivot pin than is the second end, and the distal end slidingly engages the contact surface. Force exerted by the finger portion against contact surface biases towards a normally open position with the first handle portion urged towards separation from the second handle portion, the first jaw portion urged towards separation from the second jaw portion, and the distal end urged towards the first end and bearing against the stop. Pivoting of the first handle portion towards the second handle portion causes the finger portion to deflect away from the pivot pin as the distal end slides towards the second end against biasing force. The position of the projections relative to the distal tips of the jaw portions, and the gaps between proximate pairs of the projections on the jaw portions can be selected to facilitate surrounding and subsequent gripping of a hub portion of a needle employed in a hypodermic syringe needle assembly.

REFERENCES:
patent: 258920 (1882-06-01), Hayden
patent: 1486057 (1924-03-01), Switzer
patent: 2827815 (1958-03-01), Smoyak
patent: 5522289 (1996-06-01), Eggert
patent: 5522290 (1996-06-01), Visser et al.
patent: 5607344 (1997-03-01), Endres

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