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:
Mar. 27, 1979
Filed:
Sep. 08, 1977
Sam Rose, Eggertsville, NY (US);
Other;
Abstract
The disclosed signalling apparatus provides a different identifying signal in response to a ringing signal for one or more telephone station sets connected by a common line to a centralized switching, control and signalling machine. The different identifying signals are generated in response to the number and timing of ringing signals applied to the line. If a first ring is sensed and within a predetermined first time a second ring is sensed, a first identifying signal is initiated. If a first ring is sensed and after the predetermined first time but before a predetermined second time a second ring is sensed, a second identifying signal is initiated. If a first ring is sensed, but a second ring is not sensed before the predetermined second time, the signalling apparatus is reset to initial conditions. In the disclosed preferred embodiments of the invention, the second identifying signal may be used to provide a signal to a second telephone connected to the common telephone line, or it may be used to control the operation of a remote appliance.