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:
May. 10, 1988
Filed:
Jun. 19, 1987
John D Gray, New Durham, NH (US);
William Hagar, Barrington, NH (US);
Laurent Gaudreau, S. Berwick, ME (US);
Davidson Textron Inc., Dover, NH (US);
Abstract
A mold assembly for manufacturing composite plastic products includes a mold cavity part and a lid, which is joined to form a cavity for foam precursors. The precursors expand in the cavity in a known manner to fill the cavity with a suitable layer of foamed material, such as foamed urethane. The mold cavity supports an exterior shell and the lid supports an insert for reinforcing a finished composite product. A sleeve is integrally formed on the preformed shell and it in turn is located within an access port formed through wall of the cavity part to define a slideway for receipt of a pour head extension. The extension is selectively clamped and unclamped with respect to the shell sleeve by an inflatable seal clamp which is formed as an annular ring with a pressurizable passage connected to a source of selectively applied pressure. With the passages pressurized, an apex on the inside diameter of the ring will apply a highly localized pressure against the outer surface of the shell sleeve to hold the inner surface thereof in tight sealing engagement with the pour head extension.