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:
Feb. 23, 1988
Filed:
May. 27, 1986
Megumi Nakanose, Sagamihara, JP;
Yutaka Sohara, Tokyo, JP;
Nissan Motor Co., Ltd., , JP;
Abstract
Disclosed in a jig unit for heat treatment of a metal workpiece such as, e.g., a hollow hemispherical work as a part of a rocket motor case. The jig unit includes a constraining templet member which is made of a metal having a greater coefficient of expansion than the material of the work and has an outer surface shaped correspondingly to the inner surface of the workpiece. A base of the jig unit holds the templet member and the workpiece such that the outer surface of the templet member is slightly spaced from the inner surface of the workpiece. The work is heated together with the templet member while introducing an inactive gas into the gap between the workpiece and the templet member. By thermal expansion the templet member comes into close contact with the inner surface of the workpiece and serves as a constraining means, whereby strains in the work are remedied. Cooling of the heated workpiece is carried out while the templet member is still in close contact with the inner surface of the workpiece.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile