PNEUMATIC RATCHET WRENCH
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United States of America Patent
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Issued Date -
Nov 6, 2014
app pub date -
Mar 26, 2014
filing date -
May 2, 2013
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A pneumatic ratchet wrench includes a transmission mechanism (200) having a transmission shaft (210) with a driving end (211) and a transmitting end (212) extended from the driving end (211), a clutch seat (240) and two hammer rings (250), a pneumatic motor (300) and a ratchet joint (400). Two opposite anvils (220) are formed on the driving end (211), and an eccentric shaft (230) is axially protruded from the transmitting end (212). The clutch seat (240) is rotably sheathed on the driving end (211) and has two parallel limit pins 241, and the hammer rings (250) are installed to the limit pins (241) and corresponsive to the anvils (220) respectively. The pneumatic motor (300) is coupled to the clutch seat (240) for driving and rotating the clutch seat (240). The ratchet joint (400) is coupled to the eccentric shaft (230) and driven by the transmission shaft (210).
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