Patent ID: 7866519
Filing Date: 2011-01-11
Classification: B27F

Abstract:
1. A hand-held fastener-driving tool for driving fasteners into a workpiece structure, comprising: a main body housing serving as a handle by means of which said hand-held fastener-driving tool may be held and manipulated by an operator; a pneumatic supply source fluidically connected to said hand-held fastener-driving tool for supplying pneumatic fluid to said hand-held fastener-driving tool; a driver blade housing fixedly connected to said main body housing and containing a driver blade for driving fasteners outwardly from said hand-held fastener-driving tool; pneumatic switch structure mounted upon said hand-held fastener-driving tool and operatively connected to said driver blade housing for actuating said driver blade disposed within said driver blade housing by means of pneumatic fluid supplied to said hand-held fastener-driving tool from said pneumatic supply source; a first drive wheel rotatably mounted upon said hand-held fastener-driving tool so as to be rotated as a result of operative engagement with the workpiece structure as said hand-held fastener-driving tool is moved along the work-piece structure; a second driven wheel rotatably mounted upon said hand-held fastener-driving tool; a drive connection drivingly interconnecting said first drive wheel with said second driven wheel such that said second driven wheel is rotatably driven in a manner similar to the rotation of said first drive wheel; a cam actuated mechanism mounted upon said hand-held fastener driving tool so as to periodically actuate said pneumatic switch structure in order to provide pneumatic fluid to said driver blade housing and said driver blade disposed within said driver blade housing so as to control the driving of fasteners out from said fastener-driving tool at predetermined times by said driver blade as said hand-held fastener-driving tool is moved along the workpiece structure; and a cam pin actuator mounted upon said second driven wheel for operatively engaging said cam actuated mechanism, at predetermined times, when said second driven wheel undergoes consecutive complete revolutions, such that pneumatic fluid is conducted from said pneumatic switch structure and toward said driver blade disposed within said driver blade housing whereby fasteners are driven outwardly from said hand-held fastener-driving tool at predetermined time intervals whereby fasteners are driven into the workpiece structure at locations which are uniformly spaced apart from each other.