Percussion device

Details Percussion device Percussion device

1986-09-22

1988-02-09

Bell, Paul A.

Tool driving or impacting

Processes

173101, 173162R, 29 81D, B25D 1724

Patent

active

047236108

ABSTRACT:
The percussion mechanism of this device, comprising a cylinder, a free piston, an anvil, a tool holder in which a bundle of needles is disposed, the heads of which are applied to the anvil, is mounted to slide in a tubular housing between two springs used to insulate dynamically the percussion mechanism of the housing and of the handle which holds it. The cylinder is mounted in the housing by a suspension comprising two annular seals and the cylinder is set with a clearance so that the centering provided by the seals insulates mechanically the cylinder of the housing and reduces the transmission of vibrations.

REFERENCES:
patent: 2392182 (1946-01-01), Payne
patent: 2638749 (1953-05-01), Sparano
patent: 3032998 (1962-05-01), Atkinson
patent: 3094900 (1963-06-01), Wandel et al.
patent: 3496840 (1970-02-01), Wandel et al.
patent: 3601205 (1971-08-01), Kurt
patent: 4134193 (1979-01-01), Lenzin et al.
patent: 4602689 (1986-07-01), Wauner
patent: 4630687 (1986-12-01), Dummermuth

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