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:
Aug. 22, 1995
Filed:
Jan. 03, 1994
Henry T Mastalski, Webster, NY (US);
Clifford H Griffiths, Pittsford, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
A seamless substrate is elastically stretched over a hollow cylindrical porous mandrel having a thermal expansion coefficient not greater than the thermal expansion coefficient of the substrate by applying fluid under pressure through the mandrel and relieving the pressure of the fluid so that the substrate relapses to a shape in close contact with the mandrel. A substrate carrier includes a hollow, substantially cylindrical mandrel formed of a porous material, the mandrel having an outer diameter not greater than the inner diameter of the tubular substrate and means for supplying a pressurized fluid to the interior of the mandrel, wherein the porous material is a material having a thermal expansion coefficient not greater than the thermal expansion coefficient of the substrate.