Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Material level or thickness responsive
Patent
1982-09-24
1984-06-12
Hruskoci, Peter A.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Material level or thickness responsive
210120, 210172, 210248, 210436, 220374, B01D 3500
Patent
active
044540310
ABSTRACT:
An oil reservoir for a hydraulic steering system is provided with a venting means comprising a sequence of passages from an inner protective pipe movably guided with concentric spacing on a bolt fixed to an oil reservoir housing. The concentric spacing is part of the venting passage wherein venting passes through a groove on the bolt into a venting cap. The venting cap is threadedly carried on a threaded section of the bolt through which the groove passes and effects a portion of the venting passage means. A nut carried by the venting cap effects threaded coaction and may itself have a venting groove. The protective pipe is biased into sealing engagement with the lid by a compression spring. A special construction permits ease of lid removal in conjunction with oil level indicator means.
REFERENCES:
patent: 1775557 (1930-09-01), Hollingsworth
patent: 2247445 (1941-07-01), Long
patent: 2459318 (1949-01-01), Hallinan
patent: 3113282 (1963-12-01), Coleman
patent: 3271938 (1966-09-01), Rest
patent: 3389799 (1968-06-01), Thrasher
patent: 4136712 (1979-01-01), Nogami
Hruskoci Peter A.
Jones W. Gary
Zahnradfabrik Friedrichshafen AG.
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