Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1987-06-26
1988-10-11
Hall, Carl E.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29418, 164 98, 164132, 123 4135, 123193P, 123196R, B23P 1510
Patent
active
047760753
ABSTRACT:
A method for manufacturing a piston of an internal combustion engine, especially for forming a piston gallery portion provided in the piston head for cooling the engine. A gallery member made of a metal pipe having a high thermal conductivity or a salt-core having a shape corresponding to the piston gallery is fixed to a fixing member having a peripheral rim and a plurality of fixing legs extended from the rim. The gallery member or the salt-core fixed to the fixing member is cast in the piston, body, and then, the fixing member is cut off from the piston body. The salt-core is melted away by pouring water. By this method, a piston of light weight and having high cooling efficiency can be manufactured.
REFERENCES:
patent: 3459253 (1969-08-01), Woolcott
patent: 4491168 (1985-01-01), Snee
Hara Soichi
Kamiya Takanori
Kawabata Yasuhiro
Minamoto Naoki
Aisin Seiki Kabushiki Kaisha
Hall Carl E.
Rawlins Andrew E.
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