Counterbalancing mechanism and power tool having same
AssigneeBlack & Decker Inc.
InventorYanchao Wang
Life of this patent
Estimating the term…
Abstract
A reciprocating power tool may include a driving system including a motor and a transmission received in a housing to drive a reciprocating mechanism. A counterbalance mechanism may be coupled between the driving system and the reciprocating mechanism. The counterbalance mechanism may include a rotating counterbalance mechanism including a first rotating counterweight member and a second rotating counterweight member coupled to an output gear of the driving system. The counterbalance mechanism may include a rocking counterweight member coupled between the output gear and the housing. The output gear may include a recessed portion in which the first rotating counterweight member and a clutching system are received.
Claims9
A reciprocating power tool, comprising:
- a housing;
- a driving mechanism including a motor and a transmission mechanism received in the housing;
- a reciprocating mechanism received in the housing, the reciprocating mechanism including a shaft that is coupled to an output gear of the driving mechanism, wherein the shaft is configured to reciprocate along an axis of operation in response to rotation of the output gear;
- and
- a counterbalance mechanism, including:
- a counterbalance device eccentrically coupled to the output gear and configured to perform a rocking motion with respect to a central axis of rotation of the output gear in response to rotation of the output gear.
Dependencies are inferred from the claim text.