Patent ID: 6286217
Filing Date: 2001-09-11
Classification: B23D,Y10T

Abstract:
A reciprocating saw comprising:a housing;an output shaft mounted for reciprocal motion fore and aft in the housing along a longitudinally extending axis;a motor mounted in the housing;a drive shaft driven by the motor and mounted in the housing for rotary motion about a drive shaft axis;a first drive connected to the drive shaft and the output shaft for reciprocally driving the output shaft;a counterweight slidably mounted in the housing and reciprocally drivable relative to, and along the longitudinal axis of the output shaft; anda second drive interconnecting the counterweight and the drive shaft for reciprocally driving the counterweight, the second drive attached to the counterweight on opposite sides of the longitudinally extending axis;wherein the counterweight is unitarily formed to at least partially defined a channel such that the first drive is permitted to reciprocate within the channel.