Tools – Wrench – screwdriver – or driver therefor – Responsive to torque on work
Reexamination Certificate
2007-03-30
2009-10-13
Shakeri, Hadi (Department: 3727)
Tools
Wrench, screwdriver, or driver therefor
Responsive to torque on work
C081S009240, C081S055000
Reexamination Certificate
active
07600452
ABSTRACT:
A tool for adjusting the tappet clearance in the valve actuation system of an internal combustion engine includes a screw adjustment portion that is driven by a pneumatic powered screw driver. The pneumatic power to the screw driver is regulated to cause the screw driver to position the screw so that the desired biasing force is present. The screw driver bit passes through the head portion of a torque limiting wrench which is used to loosen and tighten the jam nut that secures the tappet adjustment screw. The tool also has a pneumatic driven gripping mechanism to hold the screw driver bit in position and prevent inadvertent displacement of the tappet adjustment screw while the jam nut is tightened.
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Ciamacco Vincent
Honda Motor Co. Ltd.
Rankin , Hill & Clark LLP
Shakeri Hadi
LandOfFree
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