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US 5,566,458 AGranted
Clutch mechanism for reciprocating saws
AssigneeMilwaukee Electric Tool Corporation
InventorThomas R. Bednar
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a reciprocating saw including a housing, a shaft rotatably mounted in the housing, a motor, a spindle reciprocally supported by the housing, a wobble plate mounted on the shaft and connected to the spindle and converting rotational motion to reciprocal motion, and a clutch drivingly connecting the motor to the shaft and providing slippage between the motor and the shaft if there is binding of the spindle.
Claims14
A reciprocating saw comprising:
- a housing;
- a shaft rotatably mounted in said housing;
- a motor including a driving pinion adapted to rotate about a motor axis, said motor having a stalling torque;
- a spindle reciprocally supported by said housing and being reciprocatable along a spindle axis;
- a wobble plate mounted on said shaft and connected to said spindle and converting rotational motion of said shaft to reciprocal motion of said spindle;
- and
- a clutch drivingly connecting said motor to said shaft, said clutch including:
- a clutch driver rotatably mounted in said housing;
- a driven gear rotatably mounted in said housing, adjacent said clutch driver, said driving pinion drivingly engaging said driven gear;
- and
- a spring biasing said driven gear toward said clutch driver to create a frictional force between said driven gear and said clutch driver, said driven gear slipping relative to said clutch driver when a sufficient binding force is applied to said spindle, wherein said clutch provides slippage between said motor and said shaft at a torque that is equal to or greater than the stalling torque of said motor.
8 more elements
A reciprocating saw comprising:
- a housing;
- a spindle reciprocally supported in said housing;
- a motor operatively connected to said spindle to reciprocate said spindle, said motor having a stalling torque;
- and
- a clutch mechanism operatively positioned to provide slippage between said motor and said spindle at a slippage torque that is equal to or greater than said stalling torque of said motor.
2 more elements
Dependencies are inferred from the claim text.