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, 1993
Filed:
Jan. 28, 1992
Applicant:
Inventors:
Kenji Muramatsu, Nagano, JP;
Hiroyuki Iwashita, Nagano, JP;
Assignee:
K.K. Sankyo Seiki Seisakusho, Nagano, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F03G / ; A63H / ;
U.S. Cl.
CPC ...
185 39 ; 185D / ; 185 45 ; 446464 ;
Abstract
A power spring drive apparatus having a power spring on a power spring wind up shaft, an output shaft, and a gear train for winding the power spring and for transferring the rotational force of a wound power spring to the output shaft. The apparatus is in a housing case formed of first and second synthetic resin cases connected together by pins and receiving holes. The housing case has a power spring housing section with a window between the section and externally of the housing. One end of the power spring has a neck shape and extends through the window and is fastened to the housing.