Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – Female mold type means
Reexamination Certificate
2010-09-02
2011-11-08
Mackey, James (Department: 1744)
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
Female mold type means
C264S259000, C264S261000, C264S310000, C425S123000, C425S425000, C425S429000
Reexamination Certificate
active
08052409
ABSTRACT:
The present invention relates to a method for manufacturing an air mat that reduces the number of manufacturing processes by means of rotational molding, while preventing the generation of defective products, to a device for molding an air mat, and to an air mat manufactured and molded by the method and device. In a method for manufacturing an air mat formed in such a manner as to integrally couple a cushion part having a plurality of air bags arranged therein for containing air at the insides thereof with a plate-shaped lower sheet disposed on the lower surface of the cushion part, the method includes the steps of: preparing a lower mold having a plurality of air bag molding recesses having given depths arranged at given intervals thereon, for molding the cushion part of the air mat.
REFERENCES:
patent: 4043721 (1977-08-01), Lemelson
patent: 5267365 (1993-12-01), Walter
patent: 5490292 (1996-02-01), Auburn
patent: 5561875 (1996-10-01), Graebe
patent: 6212719 (2001-04-01), Thomas et al.
patent: 2003260089 (2003-09-01), None
patent: 1020060057067 (2006-05-01), None
Choi Gin-kyu
Im Dong-gyu
Ceragem Co., Ltd
Mackey James
Sughrue & Mion, PLLC
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