Device for measuring the oil level in closed housings

Details Device for measuring the oil level in closed housings Device for measuring the oil level in closed housings

1980-06-09

1982-05-25

Martin, Jr., William D.

Geometrical instruments

Area integrators

Electrical

G01F 2304

Patent

active

043309402

ABSTRACT:
A measuring device for determining the oil level in a closed housing, especially of internal combustion engines and transmissions. The device is provided with a sleeve fixed to the housing, and a removable measuring rod or dipstick. A stopper to close the sleeve is secured to the dipstick, which also has an abutment to limit the insertion depth in the measuring position of the dipstick. That end of the sleeve inside the housing terminates below the minimum oil level, and the sleeve has holes or openings for equalizing the pressure to the interior of the housing located as far as possible above the maximum oil level. In the measuring position, during insertion of the dipstick up to the abutment, the stopper is located below the outer end of the sleeve by at least one and one-half times the oil column level corresponding to the overpressure in the housing.

REFERENCES:
patent: 2239402 (1941-04-01), Sachs
patent: 3296703 (1967-01-01), Stade et al.
patent: 4021924 (1977-05-01), Haines
patent: 4176457 (1979-12-01), Keffeler

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