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. 29, 2000
Filed:
May. 13, 1998
Kenji Hanyuda, Kanagawa, JP;
Nippon Aleph Corporation, , JP;
Abstract
A detector that can detect an obstacle in a detection field with simple configuration and at low cost is provided. In the detector 10 having a base 11 to be mounted on a ceiling, a wall, or the like, a sensor section 12 which is mounted on the surface of the base, and a cover which is mounted on the base so as to cover the sensor section, the detector 10 is configured such that a obstacle detection sensor 20 for detecting a change of reflectance on and around the surface of the cover can be provided outside the cover 13. The obstacle detection sensor 20 includes light emitting elements 25 and 26 for emitting light to locations on and around the surfaces of the cover, and a light receiving element 24 for receiving reflected light from those locations.