The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 1999
Filed:
Oct. 31, 1997
Craig A Hunter, Milton, CA;
Hassan Balbaa, Etobicoke, CA;
Woodbridge Foam Corporation, , CA;
Abstract
A vent for a mold for producing foamed articles is described. The mold comprises an upper mold and a lower mold releaseably engageable in a closed position to define a mold cavity. The vent comprises a housing which is engageable to the mold, a passageway and an obstruction disposed in the passageway. The passageway and the obstruction are slidably movable in a first direction with respect to one another and define an opening between an interior and an exterior of the housing. The obstruction has a varying diameter in a direction parallel to the first direction. The subject mold and method are particularly well suited for the production of molded foam (e.g., polyurethane) articles.