Oil filter for internal combustion engines
OwnerHermann Traboldinventor
Life of this patent
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Abstract
The present invention relates to an oil filter (1) for internal combustion engines, which is preferably used in secondary oil circuit in addition to a conventional oil filter. The oil filter comprises a filter housing (2a, 2b, 3o, 3u) in which a filter element (5) that consists of a roll of absorbant paper that is wound about a rod (4) is installed. In order to simplify production and inventory management, the present invention proposes that the oil filter be configured as a set of elements that comprises the body sections (2a, 2b) and caps (3o, 3u) and a rod (4) with the rolled filter element (5). The volume of the oil filter can be matched to a particular application by connecting a plurality of body sections (2a, 2b) with an appropriate number of rods (4).
Claims13
An expandable elongate oil filter, for an internal combustion engine, said oil filter comprising:
- first and second cylindrical body sections concentrically aligned about a common axis each defining a hollow cylindrical interior housing a filter element, each of said first and second cylindrical body section having first and second opposed open ends, a seat located on axially facing edges of each of said first and second open ends, each of said seats accommodating a sealing means:
- each of said first and second cylindrical body sections containing a central rod located along said common axis, and a said filter element, for filtering oil, located around the central rod, said filter element having an axial length corresponding to an axial length of its associated cylindrical body section and a diameter corresponding to an inside diameter of its associated cylindrical body section;
- the central rod of the first cylindrical body section and the central rod of the second body cylindrical body section each having means for connecting the central rods end to end with one another;
- two end caps, each provided with a seat for accommodating a said sealing means of an associated body section;
- means defining an oil inlet in one of said end caps and means defining an oil outlet in one of said end caps;
- means for directing oil from said oil inlet to an inlet side of said filter elements, and means for directing oil from an outlet side of said filter elements to said oil outlet;
- first connecting means, independent of the central rods and completely external of the hollow cylindrical interior, for fixedly connecting said first open ends end to end with one another, second connecting means for fixedly connecting a first of the two end caps to said second open end of said second cylindrical body section, and third connecting means for fixedly connecting the second of the two end caps to said second open end of the second cylindrical body section;
- whereby a filtering capacity of the oil filter can be varied by varying the number of cylindrical body sections, central rods and filter elements interconnected between the first and second cylindrical body sections.
Dependencies are inferred from the claim text.