Method of manufacturing an automobile valve for use in rebuildin

Details Method of manufacturing an automobile valve for use in rebuildin Method of manufacturing an automobile valve for use in rebuildin

1989-12-19

1991-03-19

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Prime mover or fluid pump making

2940202, 2940206, 2988844, 2988846, 123188A, B23P 700

Patent

active

049999117

ABSTRACT:
A method and apparatus for remanufacturing a valve seat includes providing a valve having an oversize valve head (52) and an oversize valve stem (80). The oversize valve head has a seating surface (60) which rides higher in the valve seat (34) after resurfacing thereof. The seating surface (60) on the valve head (58) therefore rides higher on the new seating surface (66) in the valve seat (34). The oversize valve stem (80) accommodates a bored out valve guide (78) to allow a single size valve stem to be utilized. A keeper grove (84) is disposed on the upper end of the oversize valve stem (80) and dimensioned such that it is disposed a predetermined distance below the original dimension of a standard valve. This allows a predetermined amount of compression to be placed onto the valve spring (28) to account for fatigue therein.

REFERENCES:
patent: 2052101 (1936-08-01), Miller
patent: 2069933 (1937-02-01), Albertson
patent: 2275310 (1942-03-01), Nuttall
patent: 3258838 (1966-07-01), Tilton, Jr.
patent: 3344501 (1967-10-01), Kulzer
patent: 3487823 (1970-01-01), Tarter et al.
patent: 3802055 (1974-04-01), Jackson
patent: 3828415 (1974-08-01), Kammeraad et al.
patent: 3828756 (1974-08-01), Kammeraad et al.

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