Internal-combustion engines – Poppet valve operating mechanism – Tappet
Patent
1985-09-27
1987-11-10
Cline, William R.
Internal-combustion engines
Poppet valve operating mechanism
Tappet
123 9065, F01L 114
Patent
active
047049952
ABSTRACT:
A guide (28) is provided for retrofitting an existing internal combustion engine block (10) with roller cam followers (24 and 26) in place of conventional barrel-type lifters, without modification of the block itself. The guide includes a guide bar (64), keyed to the upper body (38) of each follower to allow limited rotational freedom thereof and a resilient C-shaped spring clip (70) which simultaneously bears downwardly on the upper surface of the guide bar and upwardly on the lower surface (40) of an engine block boss (18) defining follower receiving bores (20 and 22). Annular spacers (72) are provided, if required, to displace the guide bar upwardly from the upper surface (52) of the boss. An upper leg (76) of the spring clip wraps around the guide bar for retention therewith and a lower leg (78) of the spring clip is necked at a point (86) intermediate adjacent cylindrical portions (30 and 32) of the follower boss for retention therebetween.
REFERENCES:
patent: 1011695 (1911-12-01), Winton
patent: 2089478 (1937-08-01), Heiss
patent: 2119096 (1938-05-01), Buckley
patent: 3089472 (1963-05-01), Thompson
patent: 4207775 (1980-06-01), Lintott
Cline William R.
Eaton Corporation
Niels Peggy
Rowe D. A.
Sajovec F. M.
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