Tongs with adjustable jaw spacing

Details Tongs with adjustable jaw spacing Tongs with adjustable jaw spacing

2007-08-28

2007-08-28

Mackey, Patrick (Department: 3652)

Handling: hand and hoist-line implements

Hand bars and hand barrows

Opposing jaws

C294S099200

Reexamination Certificate

active

11385527

ABSTRACT:
Adjustable tongs include a slidably movable adjustment plate with a plurality of spaced notches that act in cooperation with a tab at the proximal end of the tong arm to selectively limit the spacing between the tong jaws. The notches are longitudinally spaced along the outer edges of the adjustment plate and become progressively deeper from one end of the plate to the other. An elongated longitudinal slot in the plate engages the pivot pin connecting the pair of arms which allows longitudinal movement of the plate to one of a number of selected positions where the tabs of the tong arms engage one of the sets of laterally aligned notches. Engagement of the tab with a selected one of the sets of notches allows a corresponding selected spacing between the jaws. The deeper the notch, the greater the allowed spacing between the jaws.

REFERENCES:
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patent: D477189 (2003-07-01), Bull et al.
patent: 6726263 (2004-04-01), Wang et al.
patent: D509413 (2005-09-01), Marsden et al.
patent: 2004/0239129 (2004-12-01), Sumter et al.

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