Tools – Wrench – screwdriver – or driver therefor – Responsive to torque on work
Reexamination Certificate
2005-09-27
2005-09-27
Hail, III, Joseph J. (Department: 3723)
Tools
Wrench, screwdriver, or driver therefor
Responsive to torque on work
C081S478000, C081S479000, C081S480000, C081S481000, C081S473000, C081S474000, C081S475000, C081S476000, C073S862210, C073S862220, C073S862230, C073S195000, C073S847000, C173S176000, C403SDIG008, C403S322200
Reexamination Certificate
active
06948410
ABSTRACT:
A torque wrench is provided having body and a handle that is rotatably mounted to the body for adjusting the torque setting, and an axially movable sleeve operable to selectively lock the handle. The sleeve includes a rigid member and an elastomeric member, such as an O-ring, and the sleeve is configured to act against a locking ball held in a bore of the handle. The sleeve is selectively movable between two positions: (a) a locked position wherein the rigid member firmly retains the locking ball seated in one of several detents in the body, thereby preventing rotation of the handle; and (b) an unlocked position wherein the elastomeric member biases the locking ball inwardly, deflecting when the locking ball unseats from the detent to permit handle rotation. When the sleeve is in the unlocked position, the locking ball can incrementally “click” over the detents during handle rotation.
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Gardner & Carton & Douglas LLP
Hail III Joseph J.
Muller Bryan
Precision Instruments, Inc.
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