Tool driving or impacting – Work cleansing – By motive fluid for drive motor or advance causing or...
Patent
1997-04-10
1999-05-11
Smith, Scott A.
Tool driving or impacting
Work cleansing
By motive fluid for drive motor or advance causing or...
173169, 173170, B25B19/00
Patent
active
059017945
ABSTRACT:
A pneumatic power wrench which comprises a rotation motor (11) lodged in a housing (10) having air inlet and outlet passages (16, 23) for communicating air to and from the motor (11), respectively, and a power transmission for connecting the motor (11) to an output shaft (14), wherein the air outlet passage (23) comprises an adjustable air flow restricting mechanism (24) in the form of a valve spindle (29) extending substantially longitudinally through the outlet passage (23), an annular valve seat (34), and a valve element (32) supported on the valve spindle (29) for flow restricting cooperation with the valve seat (34). The valve spindle (29) is axially adjustable relative to the valve seat (34) for varying the flow restriction through the outlet flow restricting mechanism (24).
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Jonsson Fred Rickard
Schoeps Knut Christian
Atlas Copco Tools AB
Smith Scott A.
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