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. 20, 1990
Filed:
Mar. 11, 1988
Daimler-Benz Aktiengesellschaft, Stuttgart, DE;
Abstract
The invention relates to a safety device for selectively track-guided or road-travelling vehicles, which safety device exhibits on the road side an optical indicator device switched by a control device and normally set to 'stop' signalling. In order to permit a change of the vehicle from track-guided to non-track-guided operation only when the sensing rollers are fully retracted, the invention provides that both a monitoring device monitoring the assumed rest position of the sensing rollers and signal transmission device coupled therewith are provided on the vehicle side. The signal transmission device transmits a signal indirectly switching the optical indicator device temporarily to 'go' only in the case of the sensing rollers occupying the rest position.