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. 22, 2022
Filed:
Mar. 19, 2020
Applicant:
Janome Sewing Machine Co., Ltd., Hachioji, JP;
Inventors:
Assignee:
JANOME CORPORATION, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
D05B 29/02 (2006.01); D05B 29/06 (2006.01); D05B 55/14 (2006.01); D05C 11/06 (2006.01); D05B 19/12 (2006.01); D05C 9/20 (2006.01);
U.S. Cl.
CPC ...
D05B 29/02 (2013.01); D05B 29/06 (2013.01); D05B 19/12 (2013.01); D05B 55/14 (2013.01); D05C 9/20 (2013.01); D05C 11/06 (2013.01);
Abstract
A presser foot vertical drive device includes an upper shaft configured to vertically drive a needle, a presser foot drive cam fixed to the upper shaft, a presser foot urged downward over a needle plate, a cam follower configured to be vertically driven in contact with the presser foot drive cam, and a link configured to transmit the vertical drive of the cam follower to the presser foot. The presser foot drive cam includes a plurality of drive cams having cam surfaces for different presser foot vertical drive patterns. The cam follower includes a switching unit for selection of one drive cam from the presser foot drive cam.