Patent ID: 7191927
Filing Date: 2007-03-20
Classification: B25C

Abstract:
1. A trigger control mechanism for use in connection with a fastener-driving tool so as to enable the fastener-driving tool to alternatively operate in accordance with sequential and bump-firing modes of operation, comprising: rod means, having a longitudinal axis, a first end portion adapted to be operatively engaged with an actuation lever of a trigger member of the fastener-driving tool, and a second end portion adapted to be operatively engaged with a workpiece contacting element such that said rod means is movable toward and away from the actuation lever, in response to the respective depression of the workpiece contacting element against a workpiece, and the release of the workpiece contacting element from the workpiece, whereby the actuation lever can actuate a control valve of the fastener-driving tool when said rod means is moved toward and engages the actuation lever; and said rod means being rotatably movable about said longitudinal axis between a first position at which said first end portion of said rod means will engage the actuation lever of the fastener-driving tool so as to permit the actuation lever of the fastener-driving tool to actuate the control valve of the fastener-driving tool only when the trigger member is actuated to an operative position subsequent to the depression of the workpiece contacting element against a workpiece whereby a sequential firing mode of operation of the fastener-driving tool can be achieved, and a second position at which said first end portion of said rod means will engage the actuation lever of the fastener-driving tool so as to permit the actuation lever of the fastener-driving tool to always actuate the control valve of the fastener-driving tool regardless of when the trigger member is actuated to an operative position with respect to the depression of the workpiece contacting element against the workpiece whereby a bump-firing mode of operation of the fastener-driving tool can be achieved.