Method of forming valve bodies

Details Method of forming valve bodies Method of forming valve bodies

1974-05-06

1976-11-16

Lanham, C.W.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29421R, 29557, 72 55, 72 56, B23P 1500

Patent

active

039914569

ABSTRACT:
A method is disclosed of forming valve bodies of the spool valve type wherein sharp edges around the port openings in the interior chamber of the valve are eliminated. This is accomplished by blowing holes through the chamber wall to form the ports within the interior chamber. A tool is first used to bore partially through the valve body to leave a very thin annular portion which is readily parted when high pressure is applied to the interior chamber of the valve.

REFERENCES:
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patent: 2238212 (1941-04-01), Cornell, Jr.
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patent: 2707921 (1955-05-01), Jorgensen et al.
patent: 2732897 (1956-01-01), Musser
patent: 2934813 (1960-05-01), Nippert
patent: 3158119 (1964-11-01), Thaller et al.
patent: 3204266 (1965-09-01), Carter, Jr. et al.
patent: 3457954 (1969-07-01), Nyberg
patent: 3495486 (1970-02-01), Fuchs, Jr.
patent: 3557446 (1971-01-01), Charschan

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