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. 10, 1976
Filed:
Jun. 09, 1975
Applicant:
Inventor:
Yoshiharu Hamaguchi, Fussa, JA;
Assignee:
France Bed Co., Ltd., Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21F / ;
U.S. Cl.
CPC ...
140 / ; 140-1 ;
Abstract
An apparatus for manufacturing corner springs which comprises a pair of spring leg-forming mechanisms for folding both ends of a wire several times to provide spring legs at said ends; a pair of heat-treating devices for heat-treating a wire having spring legs formed at both ends; and a pair of spring leg-bending mechanisms for bending the heat-treated spring legs.