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:
May. 05, 1992
Filed:
Mar. 06, 1991
Applicant:
Inventor:
Hiromitsu Shimizu, Osaka, JP;
Assignee:
Hirose Manufacturing Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D05B / ;
U.S. Cl.
CPC ...
112231 ;
Abstract
The amount of a bobbin thread wound in a bobbin of a full rotary hook is increased by making a circumferential portion of a bobbin case holder between a thread separating portion and a thread releasing portion thinner than the remainder of the circumference, thereby increasing the inner diameter of the bobbin case holder. Thereby, the inner diameter of the bobbin housed in the bobbin case holder and the inner diameter of the cylindrical portion housing the bobbin case can be increased and consequently an outer diameter of a flange of the bobbin can be increased, thereby increasing the amount of the bobbin thread wound around the bobbin.