Powered nail extractor

Details Powered nail extractor Powered nail extractor

1977-04-11

1978-03-14

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Nail extractor type

B25C 1100

Patent

active

040787664

ABSTRACT:
A fluid actuated nail extractor includes a pair of jaws pivotally mounted on a reciprocable rod. An impact piston impacting a second rod coupled to the jaws closes the jaws about a nail embedded in a workpiece when the extractor is positioned adjacent the nail. Thereafter, a second piston actuates the reciprocable rod to extract the nail from the workpiece. Pressurized fluid, controlled by a plurality of poppet valves, drives the pistons through a predetermined sequence of operations. The entire sequence of operations is dependent upon the position of a safety valve that is actuated by a push rod having an end located adjacent the jaws. The push rod is actuated only when the nail extractor is positioned adjacent the workpiece, and hence actuating the safety trigger valve so that the operational sequence of the pistons can be initiated.

REFERENCES:
patent: 2709570 (1955-05-01), Henry
patent: 3883118 (1975-05-01), Miller

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