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:
Mar. 07, 1989
Filed:
Feb. 08, 1988
Applicant:
Inventors:
Junzo Aisa, Shizuoka, JP;
Eizi Kosugi, Shizuoka, JP;
Assignee:
Ishikawa Tekko Kabushiki Kaisha, Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F16B / ; H01F / ;
U.S. Cl.
CPC ...
411383 ; 335305 ; 252 6254 ; 411908 ;
Abstract
A drain bolt wherein a recess is formed at the end of a male-threaded portion of a bolt body, and a sinker portion of a synthetic resin magnet is embedded in the recess of the bolt body so that a projecting portion of the magnet is projected from the end of the male-threaded portion of the bolt body. The projecting portion of the synthetic resin magnet is larger in diameter than the sinker portion. A plurality of grooves are formed on the side of the projecting portion of the synthetic resin magnet along its length.