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:
Sep. 04, 1979
Filed:
Feb. 22, 1978
Applicant:
Inventor:
Richard M Rovnyak, Schaumburg, IL (US);
Assignee:
GTE Automatic Electric Laboratories Incorporated, Northlake, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
179 / ; 179 / ;
Abstract
A circuit which connects a ringing voltage generator to a telephone subscriber loop without allowing harmful, electrical transient discharges to develop. Relay contacts are used to switch current limiting resistors into the loop circuit and ringing voltage generator circuit to limit transients during transfer of the ringing voltage generator to or from the subscriber loop circuit. These current limiting resistors are then switched out of the loop when the transients have dissipated.
Quick Actions:
Rovnyak, Richard. (1979). Transient free ring relay circuit for arbitrary time switching (U.S. Patent No. 4166930). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4166930
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile