Low-level oil sensor

Details Low-level oil sensor Low-level oil sensor

2006-04-28

2009-02-03

Bugg, George A (Department: 2612)

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

C340S450000, C340S603000, C340S612000, C340S618000, C340S623000, C073S305000, C073S307000

Reexamination Certificate

active

07486179

ABSTRACT:
A low fluid sensor for an internal combustion engine. The sensor includes a base with helically threaded post and a float slidably mounted on the post. The float rotates about the post as it moves longitudinally along it. In the preferred embodiment, eccentric mounting of the assembly along with its lobe shape act in concert with the pitch of the screw threads and fluid viscosity to dampen the buoyant movement of the float against fluid turbulence. At a predetermined level a latch spring on the float contacts an ignition circuit terminal and grounds the engine ignition circuit. A catch holds the float at the pre-determined level, preventing engine starting, so that the sensor may only be reset by addition of fluid and re-insertion of the dipstick.

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