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:
Jul. 20, 2021
Filed:
Aug. 09, 2018
Applicant:
Nhk Spring Co., Ltd., Yokohama, JP;
Inventors:
Assignee:
NHK SPRING CO., LTD., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D 1/24 (2006.01); B05C 19/02 (2006.01); F16F 1/06 (2006.01); B05D 3/00 (2006.01); B05C 3/02 (2006.01); B05D 7/00 (2006.01); B60G 11/14 (2006.01);
U.S. Cl.
CPC ...
B05D 1/24 (2013.01); B05C 3/02 (2013.01); B05C 19/02 (2013.01); B05D 3/00 (2013.01); B05D 7/00 (2013.01); F16F 1/06 (2013.01); B60G 11/14 (2013.01); B60G 2206/724 (2013.01); B60G 2206/80 (2013.01); F16F 2224/0208 (2013.01); F16F 2226/02 (2013.01);
Abstract
Provided is a coil spring manufacturing method. In the coil spring manufacturing method, a coil spring of a vehicle suspension member is immersed in a fluidized bed in which powder coat is fluidized for coating. The fluidized bed includes a vertical stream area in which the powder coat moves upward and downward. The coil spring is immersed in the vertical stream area of the fluidized bed while an end coil of the coil spring faces upward, and is periodically subjected to a relative movement with respect to a direction containing components vertical to a central axis of the coil spring in relation to the vertical stream area.