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. 08, 1977
Filed:
Oct. 20, 1975
Applicant:
Inventors:
Carl M Morris, Manhattan Beach, CA (US);
William E Manchester, Lomita, CA (US);
John L Hill, Redondo Beach, CA (US);
Robert A Bridwell, Buena Park, CA (US);
Douglas B Hugill, Hermosa Beach, CA (US);
Assignee:
Northrop Corporation, Los Angeles, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21J / ; H05B / ;
U.S. Cl.
CPC ...
219153 ; 72297 ; 72342 ; 219151 ;
Abstract
Stretch-wrap forming of titanium parts or the like by resistance heating the part and a steel forming element which is cast into a fused silica die insert. Heating is accomplished by an electrical circuit in which both the part and the element are connected in parallel. The part is stretch wrapped over the element while a low voltage, high amperage current is allowed to flow through both the part and the element.