Metal working – Means to assemble or disassemble – Valve applying or removing
Patent
1987-06-03
1988-11-01
Watson, Robert C.
Metal working
Means to assemble or disassemble
Valve applying or removing
B23P 1904
Patent
active
047809418
ABSTRACT:
A valve spring compressor hand tool quickly mounted on a rocker arm mounting stud on the top of a cylinder head for compressing a valve stem spring to release and remove the valve retainer lock for replacing a single valve spring, stem seal, or shield without removing the cylinder head on many automotive engine models. The valve spring compressor is a three piece tool including a mounting stud thread lock position engaging tool element with an internal half thread section, a threaded top and a tilt support base, a sleeve having a bifurcated valve spring top engaging side extension rotationally keyed to and slideable along the tool element from the top thereof to a keyway bottom stop position, and a manual handle member internally threaded to fit the threaded top of the thread lock position engaging tool element and turnable downward against the top of the sleeve with the bifurcated side extension to press the sleeve downward compressing the valve spring for valve retainer lock removal.
REFERENCES:
patent: 2270448 (1942-01-01), Juhl
patent: 3161166 (1964-12-01), Erwin
Automotive Engines, Construction, Operation, and Maintenance; Third Edition; William H. Crouse, author; McGraw-Hill Book Company, pp. 430 and 431.
Kintzinger Warren H.
Watson Robert C.
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