Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Making hole or aperture in article
Patent
1995-03-20
1997-08-26
Ortiz, Angela
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Making hole or aperture in article
2642711, 264275, B29C 4514
Patent
active
056607776
ABSTRACT:
A shelf assembly for a refrigerator compartment such as a refrigerator for food products includes a shelf member slidably supported for extension and retraction on a shelf support. The shelf member includes side members which are preferably molded as a rim on an article support surface from an ethylene-polypropylene copolymer and include slide surfaces engaging spaced, generally horizontal and parallel shelf support surfaces preferably formed by L-shaped brackets on the shelf support. A guide member depends from at least one, and preferably both, of the side members to guide the sliding movement. A stop on the guide member limits travel by engaging a limit surface on the shelf support. The guide member and stop may be molded integrally with the side members to define a molded slide channel or formed by a rigid insert embedded in the rim during molding. The method includes injecting the moldable around a rigid core positioned in a mold cavity and withdrawing the core after removing the molded rim to leave a slide channel in the rim.
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Co-pending U.S. Patent Application Serial No. 07/920,391, filed 27, 1992, assigned to assignee of present application.
Sliding refrigerator shelf assembly shown in attached drawing Exhibits A, B and C on sale in the U.S.A. prior to Apr. 29, 1993.
Herrmann Robert S.
Kane Edmund J.
Donnelly Technology Inc.
Ortiz Angela
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