Tools – Wrench – screwdriver – or driver therefor – Responsive to torque on work
Reexamination Certificate
2008-05-14
2011-10-25
Hail, Joseph J (Department: 3723)
Tools
Wrench, screwdriver, or driver therefor
Responsive to torque on work
C081S054000, C081S057000, C081S057110, C081S473000
Reexamination Certificate
active
08042434
ABSTRACT:
A safety torque intensifying tool has a housing, a torque intensifying unit providing at least two modes of operation including a first mode in which the tool operates with a high speed and a low torque and a second mode in which the tool operates with a low speed and a high torque, a grip to be held by a tool operator, an additional element acting as a handle for better gripping in the first mode in which the tool operates with the high speed and low torque and also as a reaction arm to abut against a stationary object to stop the housing from turning in the second mode when the tool operates with the low speed and the high torque, and a switching unit for switching the tool between the first and second modes and configured so that when the operator does not act on the switching unit the tool is in the second mode of operation with the low speed and the high torque, and when the switching unit is switched by the operator while the additional element acts as a handle, the tool is switched to the first mode of operation with the high speed and the low torque, until the operator stops acting on the switching unit and the tool is switched itself back to the second mode of operation.
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Hail Joseph J
McDonald Shantese
Striker Michael J.
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