Restriction indicator for air cleaners

Details Restriction indicator for air cleaners Restriction indicator for air cleaners

1997-09-25

2000-12-19

Williams, Hezron

Measuring and testing

Instrument proving or calibrating

Fluid pressure

116268, 116270, 340607, 73 157, G01L 2702

Patent

active

061614173

ABSTRACT:
A restriction indicator for an air cleaner of an internal combustion engine. A bellows-type diaphragm is biased toward a retracted position by a first end of a compression spring. A calibration wheel threadingly engaging the housing supports a second end of the compression spring, such that the restriction indicator can be calibrated by rotation of the calibration wheel. An end of the compression spring is seated on a slanted seating surface so that a plunger is pushed off-center to engage a latch and lock the restriction indicator.

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Copy of International Search Report mailed Feb. 16, 1999.

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