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:
Nov. 13, 1979
Filed:
Jan. 17, 1978
Applicant:
Inventors:
Rusaam S Nemets, Moscow, SU;
Efim S Gorbulev, Moscow, SU;
Veniamin A Parygin, Moscow, SU;
Jury M Kontsov, Odessa, SU;
Viktor P Moldavanov, Odessa, SU;
Mark A Shaforenko, Odessa, SU;
Alexei K Ignatiev, Moscow, SU;
Gennady S Zaikovsky, Moscow, SU;
Mikhail I Volnyakov, Odessa, SU;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23P / ;
U.S. Cl.
CPC ...
72137 ; 72177 ; 291566 ;
Abstract
According to the claimed method a round wire is first flattened and then formed into a serpentine flat spring. The segment portions of this spring are bent up in the form of thrust shoulders and calibrated for height. The shaped spring is coiled into a spiral on a mandrel, compressed and heat-treated before cutting it into individual tangential expanders.