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:
Apr. 15, 1997
Filed:
Mar. 09, 1992
Applicant:
Inventors:
Shinji Tokumasu, Hitachi, JP;
Shiro Nonaka, Hitachi, JP;
Yasumasa Kawashima, Hitachi, JP;
Takayuki Ishikawa, Hitachi, JP;
Norihiro Nakajima, Hitachi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395142 ;
Abstract
A curved surface generated on a closed curve is expressed by an equation of a film having a physical property. The film is considered as a virtual elastic film generated on the closed curve. A curved surface is generated on the closed curve through changing the shape of the elastic film by operator's setting of both the mechanical force of the elastic film and the normal direction of the elastic film on the closed curve.