Air filter restriction sensor assembly

Details Air filter restriction sensor assembly Air filter restriction sensor assembly

2006-10-24

2006-10-24

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Simulating operating condition

Marine

C073S114220, C073S118040

Reexamination Certificate

active

07124627

ABSTRACT:
An air filter restriction sensor assembly for use on an engine, such as a small gas engine provides a simple on/off system with remote indicating to notify the operator of the air restriction. More specifically, the air restriction in the air intake line of the engine creates a vacuum which pulls on a plunger mechanism until the mechanism contacts a switch, such as a membrane switch, and activates the switch. The switch can be electrically connected to an indicator device, such as a light-emitting diode, which is readily visible to the operator to notify the operator of the air restriction.

REFERENCES:
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patent: 5774056 (1998-06-01), Berry et al.
patent: 5850183 (1998-12-01), Berry, III
patent: 6161417 (2000-12-01), Nepsund
patent: 6327902 (2001-12-01), Berry et al.

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