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US 6,475,380 B1Granted
Hydraulic oil reservoir
AssigneeZF Lemförder Metallwaren AG
InventorsThomas Fangmann, Dieter Gröger
Life of this patent
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Abstract
A hydraulic fluid tank for motor vehicles has a fluid filter (1). The fluid filter (1) is inserted into a filter housing (3) present in the hydraulic fluid tank (2). The filter housing (3) may have a two-part design. The filter housing (3) may have an upper part (4) and a lower part (5), which are connected by a lock-in or snap connection.
Claims17
A motor vehicle hydraulic fluid tank with fluid filter combination, the combination comprising:
- a fluid tank having a bottom portion including an inlet structure;
- a filter housing disposed in said fluid tank, said filter housing having a lower part and an upper part;
- a tubular fluid filter inserted into said filter housing in said hydraulic fluid tank wherein said filter is completely encapsulated within said housing;
- wherein the lower part of the housing includes an admission opening connected to said inlet structure for directing unfiltered fluid into an interior of the tubular fluid filter;
- an outlet opening in the lower part of the filter housing for directing filtered fluid from an interior of the filter housing to a space within the tank adjacently surrounding an exterior of the filter housing;
- and
- a spring element disposed between a top interior surface of the upper part of the filter housing and an upper end of said filter to bias a lower end of said filter against the lower part of the filter housing.
4 more elements
Dependencies are inferred from the claim text.