Tool driving or impacting – Drive control operable by hand engaging manipulating handle
Patent
1998-04-16
1999-08-31
Vo, Peter
Tool driving or impacting
Drive control operable by hand engaging manipulating handle
173169, 173 935, 173DIG2, B23B 4500
Patent
active
059441194
ABSTRACT:
An improved grip structure for a pneumatic tool, in which the grip is furnished with a valve seat mounted with a control valve; the central part of the valve seat has an intake passage, of which the outer end is connected with an intake connector, the valve seat and a ring-shaped groove of the bearing-block hole in the dynamic housing are connected and communicated each other by means of an intake passage. Two symmetrical exhaust passages are furnished on both sides of the valve seat, and extended from the outer end of the grip to the ring-shaped groove of the bearing-block hole in the dynamic housing; a pressure air can enter a central intake passage, flowing through the control valve and a side intake passage, and finally flowing into the ring-shaped groove in the dynamic housing so as to drive blades and a rotor to turn; then, the pressure air will be exhausted through the ring-shaped groove of the cylinder sleeve and the two exhaust passages so as to provide a better intake and exhaust passages for the pneumatic tool.
REFERENCES:
patent: 3908768 (1975-09-01), Hess
patent: 4217964 (1980-08-01), Eaton
patent: 5022469 (1991-06-01), Westerberg
patent: 5346024 (1994-09-01), Geiger et al.
patent: 5591070 (1997-01-01), Kachich
patent: 5626198 (1997-05-01), Peterson
patent: 5797462 (1998-08-01), Rahm
patent: 5836401 (1998-11-01), Hsiu-Tsu
Calve James P
Vo Peter
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