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:
May. 06, 2008
Filed:
Jan. 03, 2003
Motohiro Kudo, Osaka, JP;
Tetsu Inoue, Osaka, JP;
Motohiro Kudo, Osaka, JP;
Tetsu Inoue, Osaka, JP;
Keyence Corporation, Osaka-shi, JP;
Abstract
A multi-optical-path photoelectric safety apparatus or a light curtain is placed in front of a pressing machine or a folding machine. Optical paths are set as a floating blanking area B (some paths out of a large number of optical paths) in the light curtain. The operation of the pressing machine or folding machine is forcibly stopped when two contiguous optical paths are blocked in the floating blanking area B. On the other hand, the normal protection function serves in areas A and C between which area B is sandwiched. In these areas A and C, if any one optical path enters a light blocked state, the operation of the pressing machine or folding machine is immediately stopped.