Pneumatic power wrench with adjustable exhaust restriction
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B25B-019/00
B25F-005/02
출원번호
US-0141667
(1998-08-28)
우선권정보
SE0003163 (1997-09-03)
발명자
/ 주소
Schoeps Knut Christian,SEX
출원인 / 주소
Atlas Copco Tools AB, SEX
대리인 / 주소
Frishauf, Holtz, Goodman, Langer & Chick, P.C.
인용정보
피인용 횟수 :
11인용 특허 :
7
초록▼
A pneumatic power wrench having a rotation motor supported in a housing (11), an output shaft (13) for connection to a screw joint to be tightened, a pressure air inlet passage (14) controlled by a throttle valve (18), and an exhaust air outlet passage (16) including an automatic outlet flow restric
A pneumatic power wrench having a rotation motor supported in a housing (11), an output shaft (13) for connection to a screw joint to be tightened, a pressure air inlet passage (14) controlled by a throttle valve (18), and an exhaust air outlet passage (16) including an automatic outlet flow restricting valve (26,28,43), wherein the outlet flow restricting valve (26,28,43) comprises a valve seat (26), a freely movable valve element (28,43) co-operating with the seat (26), a first activation surface (45) on the valve element (28,43) communicating with the inlet passage (14) downstream of the throttle valve (18) for exerting a motor feed pressure responsive actuating force on the valve element (28,43) in a direction away from the seat (26), and a bias spring (49) and a second outlet flow responsive activation surface (33) for actuating the valve element (28,43) in a direction toward the seat (26). The flow restricting valve (24,43) is included in an exhaust air outlet deflector (20) attached to the housing (11).
대표청구항▼
[ I claim:] [1.] Pneumatic power wrench, including a housing (11), a pneumatic rotation motor drivingly connected to an output shaft (13), a pressure air inlet passage (14) and an exhaust air outlet passage (16) in said housing (11), a manually operable throttle valve (18) located in said inlet pass
[ I claim:] [1.] Pneumatic power wrench, including a housing (11), a pneumatic rotation motor drivingly connected to an output shaft (13), a pressure air inlet passage (14) and an exhaust air outlet passage (16) in said housing (11), a manually operable throttle valve (18) located in said inlet passage (14), and an adjustable exhaust air outlet flow restricting valve (26,28,43) located in said outlet passage (16), for controlling the motor outlet pressure, chararecterized in that said flow restricting valve (26,28,43) comprises a valve seat (26) immovably arranged relative to said housing (11), and a valve element (28,43) which is freely movable relative to said housing (11) and arranged to cooperate with said valve seat (26), said valve element (28,43) has a first activating surface (45) communicating with said air inlet passage (14) downstream of said throttle valve (18) and arranged to actuate said valve element (28,43) in a direction away from said valve seat (26), and a spring (49) arranged to bias said valve element (28,43) in a direction toward said valve seat (26).
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이 특허에 인용된 특허 (7)
Kachich Albert J. (Katy TX), Air tool with exhaust diverting valve.
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