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. 26, 1987
Filed:
Jun. 06, 1985
Hermann Winterer, Freiburg, DE;
Erwin Sick GmbH Optik-Elektronik, Waldkirch, DE;
Abstract
A protective zone apparatus on a vehicle capable of travelling along a path has a light transmitter (16) and a light receiver (18). The transmitted light beam (11) is obliquely directed onto the path of travel (12) at a first fixed angle (.alpha.) and executes a scanning movement about an axis (13) perpendicular to the path of travel (12). The received light beam extends at a second fixed angle (.beta.) from the point of impingement (15) of the transmitted light beam (11) on the path of travel (12) to the perpendicular axis (13) and executes a scanning movement synchronous with that of the transmitted light beam (11). An electronic processing circuit transmits a control signal which stops the vehicle if an obstacle arises in the protective zone (FIG. 1).