Internal-combustion engines – Poppet valve operating mechanism – Spring
Patent
1993-09-28
1994-06-21
Cross, E. Rollins
Internal-combustion engines
Poppet valve operating mechanism
Spring
123 9065, 12318817, 12318813, 251337, F01L 310
Patent
active
053220390
ABSTRACT:
A valve spring top collar is formed by a unitary body having a circular top face and a bottom surface, with a first circular shoulder extending downwardly from the bottom surface of the body and a second inwardly spaced circular shoulder. The shoulders are inserted into the valve springs so that the springs cannot slip off the collar in a radial direction. A central aperture extends through the central core of the body, through which a valve stem is inserted. A plurality of peripheral apertures extend through the body about the central aperture, thereby decreasing the total weight of the collar and allowing flow of lubricant to the springs.
REFERENCES:
patent: 2314059 (1943-03-01), Steiner
patent: 3428296 (1969-02-01), Erickson
patent: 3612016 (1971-10-01), Jelen
patent: 4509473 (1985-04-01), Hamparian
patent: 4515346 (1985-05-01), Gaterman, III
patent: 4653726 (1987-03-01), Lang et al.
patent: 4989556 (1991-02-01), Shiina et al.
patent: 5143351 (1992-09-01), Pierce
patent: 5255640 (1993-10-01), Pierce
Cross E. Rollins
Lo Weilun
S & S Cycle, Inc.
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