Patent ID: 6920695

Claim:
A reciprocating hand saw ( 10 ), having a motor housing ( 16 ) and a gearbox ( 28 ) that receive a battery-operated direct-current motor ( 18 ) with a motor shaft having a shaft end ( 22 ) and a gear ( 28 ), respectively, which gear—as known per se in reciprocating saws—is connected to the shaft end in a way driven to rotate and whose gear input pinion ( 26 ) converts the rotation of the motor shaft end ( 22 ) into an up-and-down motion of a push rod ( 34 ) that carries a sawblade ( 38 ), wherein the gear ( 28 ) and its gearbox ( 14 ) originate in a reciprocating saw that can be operated by alternating current; and between the shaft end ( 22 ) and the gear input pinion ( 26 ), a multi-stage coupling ( 24 ), disposed in a manner fixed against relative rotation for transmitting torque, comprises parts easily separated from one another and in particular axially insertable into one another, and wherein one part of the coupling ( 24 ) has a fan ( 30 ).