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:
Jun. 15, 1976
Filed:
May. 12, 1975
Donald George Keith, Mount Eliza, AU;
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A process of manufacturing a cuspated sheet comprising deforming a sheet of hermoplastic material by pressing against one face of a molten sheet of the material the cold outer tips of a first array of pointed pins set in a first block and simultaneously pressing against the second face of the material the cold outer tips of a second array of projections set in a second block so that the arrays interpenetrate in such a manner that the projections on the second block are spaced from the projections of the first block by a distance greater than the thickness of the sheet and wherein the temperature of the cold outer tips of the arrays is less than the melting point of the thermoplastic material.