Powered hammer having beat piece with lubricant seal

Details Powered hammer having beat piece with lubricant seal Powered hammer having beat piece with lubricant seal

2007-06-27

2010-02-02

Nash, Brian D (Department: 3721)

Tool driving or impacting

Drive adjustable to completely change kind of drive

Adjustable to impacting device

C173S091000, C173S101000, C173S102000, C173S114000, C173S122000, C173S205000, C173S128000

Reexamination Certificate

active

07654338

ABSTRACT:
A powered hammer includes a housing, a tool holder coupled to the housing and configured to hold a tool, a motor within the housing, a piston slideably mounted within the housing, a drive mechanism that converts rotary output of the motor into a reciprocating motion of the piston, a ram slideably mounted forward of the piston and that is reciprocatingly driven by the piston, and a beat piece support mounted in the housing forward of the ram. A beat piece is slideably supported by the beat piece support. The beat piece is repetitively struck by the ram and that in turn repetitively strikes an end of a tool when the tool is held in the tool holder to transfer the momentum of the ram to a tool. The beat piece support includes a seal that is slidingly engaged by the beat piece. The seal includes an absorbent material.

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Search Report—UK Patent Office for related application GB0619650.5, Feb. 6, 2007.

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