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:
Dec. 02, 1986
Filed:
Jul. 18, 1985
Shigeharu Ootsuka, Kagamihara, JP;
Yuji Mizuno, Nagoya, JP;
Junichi Kajimura, Kani, JP;
Takaaki Mori, Mie, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A method and apparatus for indicating the contact structure of an electromagnetic contactor on the housing thereof using laser light is disclosed. The contact structure of a contactor to be marked with terminal numbers or the like is detected by a checking device. Based on the results of checking, a mask selector selects a suitable mask and positions it in the optical path of a laser. Laser light is shined through the mask onto the housing of the contactor. The laser light which passes through the mask and strikes the housing produces discoloration of the housing, and extremely clear terminal numbers, name plates, or other information in the form of characters, symbols, or shapes can be marked on the housing with the laser light. In addition to determining the contact structure, the checking device determines whether the contacts are faulty.