Internal-combustion engines – Poppet valve operating mechanism – Tappet
Patent
1997-10-28
1999-01-19
Lo, Weilun
Internal-combustion engines
Poppet valve operating mechanism
Tappet
123 9035, 123 9055, 74569, 184 69, F01L 116, F01M 910
Patent
active
058603980
ABSTRACT:
A tappet comprises a foot having a convex cam contact surface and an axially extending hub, a tappet body having a lower body portion with a lower axial bore formed therein to receive the axially extended hub of the foot, and a bearing assembly positioned between the foot and the lower portion of the tappet body. The cam contact surface operates in a frictional relationship with a cam lobe of a rotating cam. The frictional relationship between the cam lobe and the cam contact surface of the foot induces the foot to rotate about the center line of the tappet. The bearing assembly operates to reduce friction as the foot independently rotates axially about a center line of the tappet body.
REFERENCES:
patent: 1470102 (1923-10-01), Rahm
patent: 1473711 (1923-11-01), Sherbondy
patent: 1840633 (1932-01-01), Morehouse
patent: 1930261 (1933-10-01), Berry
patent: 3176669 (1965-04-01), Kuchen et al.
patent: 3303833 (1967-02-01), Melling
patent: 3450228 (1969-06-01), Wortman et al.
patent: 5127374 (1992-07-01), Morel, Jr. et al.
patent: 5148779 (1992-09-01), Okuse et al.
patent: 5188067 (1993-02-01), Fontichiaro
"Automotive Mechanics" (10th Ed.) by William H. Crouse and Donald L. Anglin, McGraw-Hill (1993), Chapter 12, pp. 125-137, and Chapter 14, pp. 159-173.
"Power Secrets" by Smokey Yunick and Larry Schreib, S-A Design Books (1989), Chapter 5, pp. 68-95 and 109-110.
Lisa Steven G.
Lo Weilun
LandOfFree
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