Tool driving or impacting – Drive control operable by hand engaging manipulating handle
Reexamination Certificate
2004-08-09
2008-08-05
Rada, Rinaldi (Department: 3721)
Tool driving or impacting
Drive control operable by hand engaging manipulating handle
C173S171000, C030S208000, C030S210000, C030S216000
Reexamination Certificate
active
07407015
ABSTRACT:
A safety mechanism for a hedge trimmer is disclosed. Thumb catches1032, 1048, together with corresponding locking members are initially biased downwardly relative to corresponding actuator levers1010, 1014, as a result of which actuation of a motor of the hedge trimmer is prevented. This prevents inadvertent one-handed actuation of the hedge trimmer. In order to actuate the hedge trimmer, the user holds one of the actuator levers1010, 1014the corresponding thumb catch1032or1048upwardly, which causes movement of the other thumb catch towards its release position to allow pivotable movement of the actuator levers1010, 1014relative to a handle of the hedge trimmer. Movement of one of the actuator levers1010, 1014relative to the handle brings the lever1018into engagement with the electrical switch assembly1008to actuate the motor of the hedge trimmer. When the actuator levers1010, 1014are released, torsion springs urge the actuator levers1010, 1014and locking members outwardly relative to the handle housing1004, as a result of which the locking members are urged into a locking position to prevent further actuation of actuator levers1010, 1014until the thumb catches1032, 1048have again been slid out of their locking position.
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Black & Decker Inc.
Lopez Michelle
Muller Wesley
Rada Rinaldi
Shapiro Bruce S.
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