Tool driving or impacting – Impacting devices – With anvil arranged to transmit torsional impact to tool
Patent
1999-03-16
1999-11-30
Smith, Scott A.
Tool driving or impacting
Impacting devices
With anvil arranged to transmit torsional impact to tool
173 935, 173169, B25B 1900
Patent
active
059925396
ABSTRACT:
A pneumatically driven power tool includes a handle with air inlet and outlet passageways therein, and a transverse mounting housing. The mounting housing has a transverse circumferential portion with a rear abutment wall, a rear annular shoulder portion, an intermediate cylindrical wall segment, and a front annular shoulder portion. A rear bearing member and a rear mounting plate are inserted into the circumferential portion to abut respectively against the rear abutment wall and the rear annular shoulder portion, and are secured by a lockpin. A front mounting plate and a front bearing member are inserted into the circumferential portion to abut against the front annular shoulder portion and the front mounting plate, and are secured by another lockpin. A motor cylinder mates with the circumferential portion. A driven shaft is disposed in and is rotatable relative to the cylinder, and is journalled on the front and rear bearing members. The motor cylinder further has inlet and outlet ports respectively in fluid communication with the inlet and outlet passageways. Compressed air introduced from the inlet passageway into the inlet ports will drive the driven shaft, and will then be discharged from the outlet port via the outlet passageway.
REFERENCES:
patent: 5377769 (1995-01-01), Hasuo et al.
patent: 5531279 (1996-07-01), Biek
patent: 5544710 (1996-08-01), Groshans et al.
patent: 5591070 (1997-01-01), Kachlich
patent: 5901794 (1999-05-01), Schoeps et al.
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