Method and apparatus for retaining a valve seat insert

Details Method and apparatus for retaining a valve seat insert Method and apparatus for retaining a valve seat insert

1987-08-20

1988-12-13

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1057, 148145, 148150, 291571R, 29447, 123188S, H05B 610

Patent

active

047912596

ABSTRACT:
A method of heat treating a valve seat insert and the resultant combination of the valve seat insert within an engine component is disclosed where the volumetric increase of a portion of the valve seat insert resulting from the heat treatment is utilized to maintain or increase the insert retention forces.

REFERENCES:
patent: Re29046 (1976-11-01), Delpaggio
patent: 2017154 (1935-10-01), Larkin
patent: 3378412 (1968-04-01), Mansfield et al.
patent: 3789180 (1974-01-01), Cachat
patent: 4336432 (1982-06-01), Bajorek
patent: 4438310 (1984-03-01), Cachat
patent: 4469530 (1984-09-01), Wyss et al.
patent: 4497673 (1985-02-01), Esser
patent: 4643781 (1987-01-01), Vickers et al.
patent: 4675488 (1987-06-01), Mucha et al.

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