Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1995-06-07
1997-07-22
Kuhns, Allan R.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
264 464, 264 465, 264 469, 264252, 264255, B29C 4412
Patent
active
056501056
ABSTRACT:
A method for making a novel, relatively low-cost loudspeaker cone assembly with an integral suspension rim. The method is for making a cone assembly wherein a cone body having an outer free edge is placed within an open female mold having an annular channel configured to form the suspension rim with the free edge of the cone exposed to the channel. A predetermined quantity of liquid plastic is deposited into the channel of the open mold. Next, the mold is substantially closed by a male die to seal the cone body adjacent its outer free edge. The liquid plastic is then cured under specific pressure and temperature conditions, over a selected interval, so that the resulting annular suspension rim is integrally impregnated into the free outer edge of the cone body and forms high density closed-cell outer skin surfaces in an integral sandwich construction with a low density closed-cell inner core, thereby providing improved flexibility, strength and durability. The outer skin surfaces of the suspension rim so produced have a rubber-like surface texture and protect the suspension rim from the adverse effects of ultraviolet radiation and other environmental conditions.
REFERENCES:
patent: 1872583 (1932-09-01), Hawley
patent: 2302178 (1942-11-01), Brennan
patent: 2646853 (1953-07-01), Pocock
patent: 2670807 (1954-03-01), Brown
patent: 2734591 (1956-02-01), Olson et al.
patent: 2840177 (1958-06-01), Schoengold
patent: 3299192 (1967-01-01), Lux
patent: 3573396 (1971-04-01), Schoengold
patent: 3612783 (1971-10-01), Schneider
patent: 3684052 (1972-08-01), Sotome
patent: 3734985 (1973-05-01), Greenberg
patent: 3767004 (1973-10-01), Liebscher
patent: 3850650 (1974-11-01), Von Bonin et al.
patent: 3858680 (1975-01-01), Tsuge et al.
patent: 3864444 (1975-02-01), Johnson
patent: 3997023 (1976-12-01), White
patent: 4014737 (1977-03-01), Brennan
patent: 4646874 (1987-03-01), Baitcher et al.
patent: 4769188 (1988-09-01), Graham et al.
patent: 4939783 (1990-07-01), Dunning
patent: 5047191 (1991-09-01), Baitcher et al.
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