Title: Pressurized hydraulic sump system

Abstract: A pressurized hydraulic sump system comprises a sump manifold to which a variable volume reservoir is connected, and is characterized by a piston which is displaceable by hydraulic means to vary the volume of the reservoir in accordance with the position of a valve which is responsive to sump pressure so that the piston is displaced in one or other direction according to whether the sump pressure is greater or less than a predetermined value.

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Inventors: Fitzgerald, William Maurice Bard

Application Number: 504723
Filing Date: 1974-09-09
Publication_date: 1977-06-28
Assignee:
Primary Class(es): 138/31 417/543
Other Classes:
US Patent Ref:

2519900	Aug, 1950	Geiger et al.	92/108.
2764999	Oct, 1956	Stanbury	138/31.
2830609	Apr, 1958	Korsak et al.	138/31.
2937663	May, 1960	Ashton et al.	138/31.
2978986	Apr, 1961	Carder et al.	60/595.
3005306	Oct, 1961	Bush	60/613.
3015345	Jan, 1962	Michael	138/31.
3024591	Mar, 1962	Ehrat et al.	60/595.
3036809	May, 1962	Kerr	138/31.
3119230	Jan, 1964	Kosoff	60/595.
3365879	Jan, 1968	Panhard	417/323.
3669151	Jun, 1972	Fleming	138/31.
3905580	Sep, 1975	Hooper	92/108.

Other Refs: 1,150,3921,132,973

Apr, 1969	UK
Nov, 1968	UK

Primary Examiner: Artis, Henry K.
Assistant Examiner: Bryant, III, James E.
Attorney: