Valve spring top collar

Details Valve spring top collar Valve spring top collar

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

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