Valve core grasping apparatus

Details Valve core grasping apparatus Valve core grasping apparatus

1999-08-30

2000-09-26

Scherbel, David A.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29255, 29263, B23P 1904

Patent

active

061228109

ABSTRACT:
Apparatus removes and replaces the valve core from the internally threaded valve stem of apparatus such as vehicular tires and air conditioning systems. Valve cores of the Shrader type have a rectangular outward projection. The device of the invention has a pair of opposed jaws that are movable toward and away from each other for removably grasping the lateral sides of the projection. The jaws are moved toward one another for grasping by a threaded rod with a tapered end that cooperates with sloping elements opposite the jaws. The jaws move away from each other for releasing the valve core by elastic bias. An optional embodiment includes a valve to enable removal and replacement of the core without the loss of fluid from the valve stem. The invention may be used to replace a valve core, or to add fluid such as refrigerant or tire sealant without interference from a valve core.

REFERENCES:
patent: Re36009 (1998-12-01), Shultz
patent: 2853774 (1958-09-01), Peterson
patent: 4507838 (1985-04-01), Hacker
patent: 4651596 (1987-03-01), Rachanski
patent: 4694569 (1987-09-01), Colvell et al.
patent: 5875534 (1999-03-01), Jackson

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