Senco Products, Inc.

Senmed, Inc.

Sencorp, Inc.

Donald D Juska

John P Crutcher

J Charles Hueil

Nail

An electromechanical flywheel containing fastener driving tool. The tool comprises a frame supporting a housing, a guide body and a fastener containing magazine. A free floating driver within said frame. Forward and rearward flywheels are arranged in tandem within the tool frame with their peripheral surfaces opposed. A pair of beam-like arcuate load springs are located to either side of the frame. The load spring rearward ends carry bearings in which the shaft of the rearward flywheel is journaled. The load spring forward ends carry rotatable eccentric bearing housings in which the shaft of the forward flywheel is journaled. The bearing housings are rotatable to shift the forward flywheel between operative and inoperative positions wherein the opposed surfaces of the flywheels are spaced by a distance less than and a distance greater than the thickness of the driver, respectively. The load springs permit the forward flywheel to yield slightly from its operative position when the driver is introduced between the flywheels. An electric motor and gear train drive the flywheels in counterrotation regardless of the position of the forward flywheel. A driver return system comprises a stationary idler roller and a return roller and gear train constantly driven by the rearward flywheel and pivotable thereabout between operative and inoperative positions. The driver is shiftable between a retracted position and an extended position. A driver trigger released locking means maintains the driver in its normal position. A driver actuator introduces the released driver between the flywheels. The tool has a safety which controls the driver trigger, the driver actuator and the positions of the forward flywheel and the return roller.

Electro-mechanical fastener driving tool

An improved clip feed system for a surgical ligating instrument of the type having first and second clip-clamping jaws at its forward end, a pair of handles to shift the jaws between open, clip-feeding and closed, clip-clamping positions, an elongated tube-like clip magazine containing a plurality of clips lying in a row, one behind the other, in the same plane and a feeder shoe to constantly urge the row of clips toward the forward end of the instrument and the forwardmost clip to a staging area in front of the magazine, a pusher track parallel to the clip magazine and extending to the forward ends of the jaws, and a pusher actuated by the handles between a retracted clip-receiving position when the handles and jaws are in their clip-clamping positions and an extended position locating a clip at the forward ends of the jaws when the handles and the jaws are in their clip-feeding positions. The improved clip-feed system comprises a plunger normally located in and biased to an unactuated position adjacent the staging area. The plunger is shiftable by the second jaw, as the second jaw moves to its clip-clamping position, to an actuated position wherein the plunger positively shifts the forwardmost clip from the staging area to the pusher track, the plunger returning to its unactuated position when the second jaw is shifted to its open, clip-feeding position.

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Winchester, OH, United States of America

Donald D Juska