Injection molded article

Details Injection molded article Injection molded article

2011-03-01

2011-03-01

Watkins, III, William P (Department: 1783)

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

C396S529000

Reexamination Certificate

active

07897242

ABSTRACT:
A plurality of undulations are continuously formed on a front surface and a back surface of at least a beam portion in an injection molded article, and warpage generated by molding is prevented. Injection molding of the present invention is effective for, for example, prevention of the warpage of a beam generated by influences of light intercepting ridges formed on an inner surface of a lens barrel or the like.

REFERENCES:
patent: 5950021 (1999-09-01), Suzuki et al.
patent: 44-3022 (1969-02-01), None
patent: 59-73728 (1984-05-01), None
patent: 1-235391 (1989-09-01), None
patent: 06-055597 (1994-03-01), None
patent: 11-086353 (1999-03-01), None
patent: 2002-036309 (2002-02-01), None

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