Internal-combustion engines – Poppet valve operating mechanism – Spring
Patent
1993-08-18
1994-05-24
Cross, E. Rollins
Internal-combustion engines
Poppet valve operating mechanism
Spring
1231888, 1231889, F01L 308, F01L 310
Patent
active
053139178
ABSTRACT:
The self-aligning valve assembly facilitates proper seating of an engine exhaust valve even though the valve seat is distorted or tilted due to temperature gradients. The valve assembly includes a guide member having a flat surface that slides across a flat surface on the engine block. The guide assembly also includes a return spring and a spring retainer that engages a notch on the valve stem. The spring is disposed between the guide member and the spring retainer. To improve valve closing, the seating surface on the underside of the valve head is preferably convex, while the valve seat is conical. In operation, the compression spring forces proper seating to occur by acting on the retainer which is in turn connected to the valve stem. The guide member slides to reorient the valve stem to the proper position for optimal seating.
REFERENCES:
patent: 1512732 (1924-10-01), Wedlick
patent: 1650644 (1927-11-01), Osterholm
patent: 1650655 (1927-11-01), Rose
patent: 1658925 (1928-02-01), Jardine
patent: 1805255 (1931-05-01), Osterholm
patent: 1826543 (1931-10-01), Hervig et al.
patent: 1826549 (1931-10-01), Jardine
patent: 1842110 (1932-01-01), Osterholm
patent: 1960709 (1934-05-01), Olenick
patent: 2032906 (1936-03-01), Biewend et al.
patent: 2052862 (1936-09-01), Armstrong
patent: 2222138 (1940-11-01), Burkhardt
patent: 2650579 (1953-09-01), Bernight
patent: 2694391 (1954-11-01), Ohly
patent: 2775232 (1956-12-01), Witzky
patent: 3037494 (1962-06-01), Kirkpatrick et al.
patent: 3279446 (1966-10-01), Rappa
patent: 3470983 (1969-10-01), Briggs
patent: 4546737 (1985-10-01), Kazuoka et al.
patent: 4734968 (1988-04-01), Kuroishi et al.
patent: 4779584 (1988-10-01), Mosler
patent: 4787736 (1988-11-01), Mori et al.
patent: 5148779 (1992-09-01), Okuse et al.
Briggs & Stratton Corporation
Cross E. Rollins
Lo Weilun
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