Fastening tool assembly

A fastening tool assembly comprising:

• a housing having a contact surface to contact a workpiece, and a fastener outlet provided along the contact surface to dispense fasteners therethrough;
• a magazine mounted in the housing to store fasteners and to convey the fasteners to the fastener outlet;
• a knife mounted in the housing for translation relative to the outlet for a latched position and a release position to drive a fastener from the magazine through the outlet during translation to the release position;
• a biasing member mounted in the housing and operably connected to the knife to bias the knife to the release position;
• a handle mounted to the housing to move relative to the housing, the handle being operably connected to the knife and the biasing member to load the biasing member and release the knife and the biasing member, thereby permitting the biasing member to return the knife to the release position to consequently drive a fastener through the outlet, with a pair of inwardly converging ramp surfaces formed upon the handle facing the housing;
• a pair of wedges engaging the ramp surfaces and cooperating with the biasing member to converge as the handle is translated toward the housing;
• and
• a third wedge engaging the pair of wedges and the biasing member to translate toward the housing thereby loading the biasing member as the pair of wedges converge.

A fastening tool assembly comprising:

• a housing having a contact surface to contact a workpiece, and a fastener outlet provided along the contact surface to dispense fasteners therethrough;
• a magazine mounted in the housing to store fasteners and to convey the fasteners to the fastener outlet;
• a knife mounted in the housing for translation relative to the outlet for a latched position and a release position to drive a fastener from the magazine through the outlet during translation to the release position, wherein the knife includes an aperture formed therethrough;
• a first biasing member mounted in the housing and operably connected to the knife to bias the knife to the release position;
• a handle mounted to the housing to move relative to the housing, the handle being operably connected to the knife and the first biasing member to load the first biasing member and release the knife and the first biasing member, thereby permitting the first biasing member to return the knife to the release position to consequently drive a fastener through the outlet;
• a second biasing member biasing the knife to a raised position;
• a latch member pivotally connected to the housing with a catch extending into the knife aperture to retain the knife in the raised position;
• a cam portion provided on the latch member spaced apart from the catch;
• and
• a slider mounted for linear translation only in the housing in engagement with the latch member cam portion, the slider having an aperture formed therethrough, the slider cooperating with the handle so that depression of the handle translates the slider until the slider aperture aligns with the latch member cam portion whereby the latch member pivots as the cam portion extends into the slider aperture thereby releasing the catch from the knife thereby releasing the knife.