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:
Jun. 02, 1981
Filed:
Aug. 09, 1979
Santino D Meo, Oakland, CA (US);
Tri Delta Industries, Inc., Hayward, CA (US);
Abstract
A safety trailer hitch including a mechanical connection to connect a trailer to a tow vehicle with the mechanical connection secured by a latch, a backup connection between the trailer and the tow vehicle that is releasably secured to the tow vehicle, a first, normally open switch that is positioned to be closed when the mechanical connection is made, a second, normally closed switch that is positioned to be opened when the latch is closed, and a third, normally closed switch that is positioned to be opened when the backup connection is secured to the tow vehicle, with the second and third switches in parallel and in series with the first switch, an alarm and a source of electric energy in an electric circuit with the switches such that when the first switch and either of the second or third switches are closed, the alarm will be actuated.