Tools – Wrench – screwdriver – or driver therefor – Responsive to torque on work
Reexamination Certificate
2005-12-27
2005-12-27
Wilson, Lee D. (Department: 3723)
Tools
Wrench, screwdriver, or driver therefor
Responsive to torque on work
C081S478000, C081S468000
Reexamination Certificate
active
06978705
ABSTRACT:
A torque wrench including a wrench main body, a central push rod mounted in the main body and having an escape section, an adjustment handle adjustably fitted with one end of the main body and a restricting member locked on the central push rod. When adjusting the preset torque value, a user engages a toothed section of the central push rod in a toothed hole of the adjustment handle; the adjustment handle drives the central push rod to adjust the torque value of the torque wrench. The toothed section of the central push rod is then disengaged from the toothed hole of the adjustment handle. The escape section having a diameter smaller than the diameter of the toothed hole fits into the toothed hole so that the central push rod is free from the adjustment handle; as a result the torque value will not be unexpectedly changed.
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Grant Alvin J.
Rosenberg , Klein & Lee
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