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:
Dec. 05, 1978
Filed:
Apr. 08, 1977
Donald F Coleman, Dunlap, IL (US);
Sammy J Rhodes, Aurora, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
Abstract
A switch connected to a power source is closed automatically in response to a vehicle being conditioned for travel and is opened in response to the vehicle being stopped. First and second apparatuses deliver first and second electrical signals, respectively, to a switching device in response to the switch being closed. The switching device is rendered conductive for connecting the power source to an alarm for energizing the alarm when either one or both of the first and second signals is delivered thereto. The switching device is rendered nonconductive for deenergizing the alarm in response to neither of the signals being present. A timer stops delivery of the first signal to the switching device only after the first signal has been delivered to the switching device for a predetermined period of time. A manual override is provided for manually selectively stopping delivery of the second signal to the switching device.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile