Anti-freezing device for pneumatic tools

Details Anti-freezing device for pneumatic tools Anti-freezing device for pneumatic tools

1981-07-23

1984-07-24

Maslousky, Paul E.

Motors: expansible chamber type

Combined

91317, 173DIG2, 181230, F01B 2300, F01L 2502

Patent

active

044612044

ABSTRACT:
The invention concerns an anti-freezing device for pneumatic tools to avoid the immobilization of the striker piston because of freezing up. A thermally insulating sleeve, broken only at the level of the air exhaust apertures of the cylinder, separates the body of the hammer from an annular chamber into which the apertures open. An exhaust passage connects the annular chamber with the exterior and extends along the external wall of the exhaust silencer parallel to the striker piston. The exhaust silencer also is provided, above and below the annular chamber with two hermetically sealed chambers, which prevent the cooling of the naturally hot zones of the hammer by the air in the exhaust passage.

REFERENCES:
patent: 2128742 (1938-08-01), Fuehrer
patent: 3224527 (1965-12-01), Waldron
patent: 4189917 (1980-02-01), Gunning
patent: 4303133 (1981-12-01), Godolphin

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