Internal-combustion engines – Poppet valve operating mechanism – Lubrication
Patent
1992-05-06
1993-02-23
Cross, E. Rollins
Internal-combustion engines
Poppet valve operating mechanism
Lubrication
123 905, 74569, F01L 114
Patent
active
051880687
ABSTRACT:
A valve tappet for actuating a valve lifter in an internal combustion engine. The present invention has greater strength and improved oil flow control as compared to conventional tappets. The present invention achieves these objectives through a design that maintains essentially continuous contact with the internal surface of the lifter bore throughout the entire length of the tappet. Throughbores are formed in the tappet body allowing oil flow therethrough. The resulting tappet does not have the abrupt edges associated with conventional tappet designs, this also minimizes scuffing of the lifter bore, an additional problem associated with conventional tappets.
REFERENCES:
patent: 2091674 (1937-08-01), Dostal
patent: 2846988 (1958-08-01), Iskenderian
patent: 3089472 (1963-05-01), Thompson
patent: 3108580 (1963-10-01), Crane
patent: 3139076 (1964-06-01), Flaherty
patent: 3234815 (1966-02-01), Line
patent: 3267918 (1966-08-01), Ayres
patent: 3273547 (1966-09-01), Lesher
patent: 3430613 (1969-03-01), Barnes
patent: 3439660 (1969-04-01), Lesher
patent: 3886808 (1975-06-01), Weber
patent: 3977370 (1976-08-01), Humphreys
patent: 4094279 (1978-06-01), Kueny
patent: 4173954 (1979-11-01), Speckhart
patent: 4231267 (1980-11-01), Van Slooten
patent: 4361120 (1982-11-01), Kueny
patent: 4607599 (1986-08-01), Buente et al.
patent: 4809651 (1989-03-01), Gerchow et al.
patent: 4885952 (1989-12-01), Connell et al.
Gaterman, III William C.
Pohle William A.
Crane Cams
Cross E. Rollins
Lo Weilun
LandOfFree
Roller tappet does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Roller tappet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Roller tappet will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2197801