Threaded tappet adjuster

Details Threaded tappet adjuster Threaded tappet adjuster

1984-04-04

1985-10-22

Lazarus, Ira S.

Internal-combustion engines

Poppet valve operating mechanism

Tappet

123 9045, F01L 122

Patent

active

045481687

ABSTRACT:
An automatic tappet adjuster for a valve operating mechanism has two components 12, 14 with co-operating buttress thread form screw threads 32. The axial free play in the threads 32 sets the valve clearance. Excess clearance 56 is taken up by movement of one component, 14 acted on by a spring 40, relative to the other component 12. The buttress thread form 32 exhibits higher friction against rotation in one direction than in the other.

REFERENCES:
patent: 1907631 (1933-05-01), Warren
patent: 2131507 (1938-09-01), Goodwin
patent: 2211585 (1940-08-01), Rushmore
patent: 2283536 (1942-05-01), Burkhardt
patent: 2320385 (1943-06-01), Rockstroh
patent: 2642049 (1953-06-01), Russell
patent: 2693790 (1954-11-01), Ralston
patent: 2713856 (1955-07-01), Turley
patent: 3118322 (1964-01-01), Oldberg et al.

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