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:
Sep. 16, 2014
Filed:
Jan. 14, 2013
Applicant:
Kurosawa Construction Co., Ltd., Tokyo, JP;
Inventors:
Ryohei Kurosawa, Tokyo, JP;
Kei Hirai, Tokyo, JP;
Assignee:
Kurosawa Construction Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D07B 1/06 (2006.01); D07B 1/02 (2006.01); D07B 7/18 (2006.01);
U.S. Cl.
CPC ...
D07B 1/02 (2013.01); D07B 2201/2006 (2013.01); D07B 2201/2011 (2013.01); D07B 2205/3064 (2013.01); D07B 2301/10 (2013.01); D07B 2201/2051 (2013.01); D07B 2201/2012 (2013.01); D07B 2205/3071 (2013.01); D07B 2201/2046 (2013.01); D07B 2205/306 (2013.01); D07B 1/0693 (2013.01); D07B 2201/2013 (2013.01); D07B 2207/4059 (2013.01); D07B 7/18 (2013.01); D07B 2201/2065 (2013.01); D07B 2201/2044 (2013.01); D07B 2501/2023 (2013.01); D07B 2205/3067 (2013.01); D07B 2301/45 (2013.01); D07B 2401/2025 (2013.01); D07B 2207/404 (2013.01); D07B 2201/2059 (2013.01);
Abstract
A double rustproof PC strand has superior durability and semi-permanent rustproof performance. A core wire and surrounding wires are formed of wires subjected to a wire drawing treatment and a plating treatment to be formed with a plated layer. A rustproof treatment is applied by forming a synthetic resin coat on an outer peripheral surface thereof. In order to uniformize and regulate the twisting pitch, the core wire and the surrounding wires are adjusted under the conditions of: