Patent ID: 7690546
Filing Date: 2010-04-06
Classification: B25C

Abstract:
1. A pneumatic actuation device for a tool having a trigger and a tool housing, the pneumatic actuation device consisting essentially of: a housing, the housing having a piston drive chamber and an air inlet chamber formed therein, and the housing having a first attachment arm and a second attachment arm, wherein the first and second attachment arms are configured to attach the actuation device to the tool housing at least one pin; a piston disposed within the piston drive chamber and configured to slidably move within the piston drive chamber, the piston having a piston head and a support plate, a shaft and an annular groove formed between the piston head and the support plate, wherein when the piston is slidably moved to a first position within the piston drive chamber, the piston contacts and actuates the trigger, and when the piston is at a second position, different than the first position, within the piston drive chamber, the piston does not contact nor actuate the trigger, and wherein the piston slidably moves from the first position to the second position by action of the trigger against the piston; and an O-ring, wherein the O-ring is disposed in the annular groove and wherein the O-ring forms a seal between the piston and the piston drive chamber.