Reservoir assembly having a drain therein

Details Reservoir assembly having a drain therein Reservoir assembly having a drain therein

1991-04-15

1992-04-28

Cross, E. Rollins

Internal-combustion engines

Frame construction

Horizontal cylinder

123196R, 184 15, 220465, F16N 3300

Patent

active

051078082

ABSTRACT:
The design and construction of present oil pan assemblies have caused increased manufacturing cost, reduced seal life and reduced engine reliability. The present invention overcomes these oil pan assembly construction problems by using an oil pan assembly including a thin walled structure having a drain port formed therein. The thin walled structure further has a frusto-conical contoured lip around the drain port being concave toward the inside surface. The frusto-conical contoured lip has a sealing surface on the portion of the outside surface forming the frusto-conical contoured lip. A reinforcing member having a threaded hole therein and a conically contoured support surface at one end of the threaded hole is positioned so that the threaded hole is generally centered about the drain port. The support surface is located in supporting relationship to the frusto-conical lip. A drain plug having a threaded end and a sealing surface also includes an O-ring seal removably attached to the drain plug. Thus, when the components are in functionally working relationship, the O-ring engages with the sealing surface of the drain plug and the sealing surface of the frusto-conical contoured lip.

REFERENCES:
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patent: 3387621 (1968-06-01), Schaff
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patent: 4938314 (1990-07-01), Sitzler et al.
patent: 5046634 (1991-09-01), McFarlin et al.

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