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US 4,933,116 AGranted
Power valve shield
OwnerTerry L. LaPorainventor
Life of this patent
Estimating the term…
Abstract
A device for preventing damage to the carburetor power valve during engine backfire conditions. The device, which comprises an internal one-way valve and is threaded at one end, is used to replace a throttle body mounting screw on the bottom of the carburetor. Used in conjunction with the device is a means to block the original vacuum port to the power valve and redirect the vacuum through the device.
Claims1
A carburetor throttle body mounting screw which is hollow, contains a one way valve and is sized and adapted to replace an existing throttle body attaching screw in a passage leading into the power valve chamber.
Dependencies are inferred from the claim text.