Method and apparatus for manufacturing valve components

Details Method and apparatus for manufacturing valve components Method and apparatus for manufacturing valve components

1977-04-22

1978-07-18

Larson, Lowell A.

Metal deforming

By use of 'flying tool' engaging moving work

Including arcuately oscillating tool-face

72213, B21K 124

Patent

active

041007859

ABSTRACT:
A valve core for co-operation with a hydraulic valve sleeve, wherein the core is provided with a plurality of longitudinally extending grooves constructed for co-operation with mating radially inwardly facing grooves in the valve sleeve, wherein the grooves are constructed by a rolling operation in a manner permitting almost limitless variations in exact valve-land contour. The invention deals with the valve core thus constructed and a preferred valve slot configuration, along with a novel method and apparatus for the construction thereof.

REFERENCES:
patent: 16630 (1857-02-01), Platt
patent: 404152 (1889-05-01), Barclay
patent: 685417 (1901-10-01), Williams
patent: 2781678 (1957-02-01), Nichols et al.
patent: 3347077 (1967-10-01), Erdelyi

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