Air breather for power transmission unit

Details Air breather for power transmission unit Air breather for power transmission unit

1983-03-21

1985-11-26

Smith, Gary L.

Machine element or mechanism

Elements

Gear casings

74606A, F16H 5704

Patent

active

045548447

ABSTRACT:
A housing assembly for a power transmission unit comprises a casing provided at the open end thereof with an upright peripheral seating face and a cover member fitted at its upright peripheral seating face to the upright peripheral seating face of the casing in a fluid-tight manner. The cover member is provided at the head portion thereof with a vertical vent hole and is integrally formed at the inner wall thereof with a laterally slanted protrusion fitted to the upper corner of the casing seating face in a fluid-tight manner to form an air passage communicating the vent hole into the casing, and an air breather plug assembly is coupled over the vent hole. The air passage is designed to be wider at its lower portion and to be narrower towards its upper portion. An air chamber is provided between the upper end of the air passage and the vent hole.

REFERENCES:
patent: 1365836 (1921-01-01), Leverett
patent: 1529936 (1925-03-01), Tinniswood
patent: 2305012 (1942-12-01), Kinnucan
patent: 3348430 (1967-10-01), Polzin
patent: 3350958 (1967-11-01), Casale
patent: 3686973 (1972-08-01), Davidson et al.
patent: 4126201 (1978-11-01), Stevens
patent: 4151761 (1979-05-01), Nishikawa et al.
patent: 4203331 (1980-05-01), Shindo et al.
patent: 4351203 (1982-09-01), Fukunaga
patent: 4382497 (1983-05-01), Sakai et al.
patent: 4446755 (1984-05-01), Takahashi

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