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:
Mar. 23, 1976
Filed:
Aug. 28, 1973
Paul L Gomory, Bethesda, MD (US);
Phillips Petroleum Company, Bartlesville, OK (US);
Abstract
An extrudate element is inserted into a base material so that a portion of the extrudate enters into or traverses the base material. The inserted extrudate element, the constituent of the base material, or both are composed of an expandable extrudate containing an expansion agent. The expansion agent is activated during or after insertion of the extrudate element to cause enlargement of the expandable extrudate and/or the substrate or base. This enlargement fixes the extrudate element into the base material by tightening the inserted element against the base material to wedge it in place, as by causing portions of the inserted element to enter interstices of the base material, or by causing the inserted element to expand on both sides of the insertion opening to a diameter greater than that of the insertion opening. The insertion and subsequent fixing into a base material of a plurality of elements produces a pile surfaced article. In one embodiment a plurality of elements composed of a foamable material containing a suitable foaming agent is extruded directly through a base material and foamed, thereby locking the foamed elements into the backing to form a pile surface of foamed extrudate.