Patent ID: 11958121
Assignee: BLACK & DECKER, INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A reciprocating power tool, comprising:
a housing;
a driving system including a motor and a transmission received in the housing; and
a reciprocating mechanism received in the housing, the reciprocating mechanism including:
a guide bracket fixed in the housing;
a bushing movably coupled in the housing; and
a reciprocating shaft having a first end portion thereof movably coupled to the guide bracket, a second end portion thereof configured to be coupled to an accessory tool, and an intermediate portion thereof movably coupled in the bushing, wherein the reciprocating shaft is configured to reciprocate in response to a force transmitted thereto from the driving system,

wherein the guide bracket includes:
at least one guide slot;
a contoured guide surface defined in the at least one guide slot, the contoured guide surface having a curved contour configured to guide a rolling motion of at least one roller coupled to the first end portion of the reciprocating shaft in response to a reciprocating movement of the first end portion of the reciprocating shaft in the guide bracket,
wherein, in response to the rolling motion of the at least one roller along the contoured guide surface, the first end portion of the reciprocating shaft moves in a first direction with respect to a longitudinal centerline of the at least one guide slot, and the second end portion of the reciprocating shaft moves in a second direction that is opposite the first direction.