Method of conditioning a rotary valve seat

Details Method of conditioning a rotary valve seat Method of conditioning a rotary valve seat

1982-01-08

1984-08-28

Goldberg, Howard N.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

75126R, 51281R, B21D 5300

Patent

active

044675100

ABSTRACT:
A method of forming concavities in a cast iron valve seat to which lubricating oil may be applied to reduce the abrasion between the valve seat and a handle operated rotary valve that is slidably engagable with the valve seat. Pockets of graphite are formed at the valve seat surface by heat treating the valve seat, following which the valve seat undergoes a lapping process that removes the graphite and leaves numerous concavities in the valve seat surface. These concavities hold the lubrication and thus extend the abrasion-free life of the rotary valve and valve seat interface to enhance the metal-to-metal seal thereat.

REFERENCES:
patent: 2214652 (1940-09-01), Bancroft
patent: 2268723 (1942-01-01), Scherer
patent: 3663214 (1972-05-01), Moore et al.
patent: 3849122 (1974-11-01), Gobble et al.
patent: 3977867 (1976-08-01), Cochran et al.
patent: 4119459 (1978-10-01), Ekemar et al.
patent: 4146080 (1979-03-01), Baum
ASM Metals Handbook, by American Soc. for Metals, 1961 ed., pp. 362-365.

Affiliated with

Also associated with

Rating

Method of conditioning a rotary valve seat does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of conditioning a rotary valve seat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of conditioning a rotary valve seat will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-870602