Patent ID: 9701001
Date: 2017-07-11
CPC Classifications: B25C,B25D

Claim:
1. A fastening tool comprising: a housing having a fastener outlet; a striker mounted for translation in the housing to drive a fastener from the fastener outlet in an unloaded position; a biasing member cooperating with the striker to urge the striker towards the unloaded position; a motor oriented in the housing; a transmission coupled to the motor to receive a rotary input from the motor and to provide a rotary output; and a cam coupled to the transmission to receive the rotary output, the cam having a cam surface in cooperation with the striker such that rotation of the cam translates the striker to a loaded position and to a release position whereby the biasing member drives the striker to the unloaded position, wherein the cam surface is profiled to require an input torque while loading the biasing member and to require a subsequent input torque at an intermediate position that is less than the prior input torque.