Expansible chamber devices – Piston – Open-ended hollow skirt type
Patent
1983-08-03
1985-10-22
Look, Edward K.
Expansible chamber devices
Piston
Open-ended hollow skirt type
92216, 92221, 123193P, F16J 104
Patent
active
045481270
ABSTRACT:
A piston for an internal combustion engine comprising a piston body (1) and a crown portion (3) that are connected by anchoring means comprising elongate members (7,23,26,79,80) that extend from the crown portion (3) into the piston body (1) so as to transmit tensile and compressive loads from the crown to a portion of the piston body in a region spaced axially away from the crown portion at a temperature which, at maximum operating temperatures, is low enough to prevent loosening of the anchoring means, characterized in that co-operating surfaces of said anchoring means (7,9,16) and piston body (1) are pre-loaded into contact with one another by virtue of mechanically applied strain energy stored in the anchoring means and piston body (1) and which acts axially to prevent parting of said co-operating surfaces by said tensile and compressive loads without being dependent on any reaction forces between the adjacent faces of the crown portion and piston body.
REFERENCES:
patent: Re18834 (1932-03-01), Nelson
patent: 1514506 (1924-11-01), Cook
patent: 1995746 (1935-03-01), Nelson
patent: 2219989 (1940-10-01), Gimm
patent: 2806750 (1957-09-01), Gehres
patent: 3520234 (1970-07-01), Hill et al.
patent: 4018132 (1977-04-01), Abe
patent: 4073221 (1978-02-01), Goloff
Dunn Stephen J.
Sparrow Alan W.
Farris Robert L.
Look Edward K.
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