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. 26, 1989
Filed:
Nov. 25, 1987
Applicant:
Inventor:
Joseph T Merenda, Northport, NY (US);
Assignee:
J. R. Microwave, Inc., Northport, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25B / ; G05D / ; G05D / ;
U.S. Cl.
CPC ...
165 14 ; 165 26 ; 165 24 ; 236 51 ; 236 / ; 34082542 ; 34082571 ; 34082576 ;
Abstract
An apparatus for interconnecting a four wire control such as a thermostat and a four wire system such as a heating/cooling system with two wires. An encoder encodes signals provided by the thermostat so that four encoded signals may be transmitted over a two wire system. The apparatus includes inductors which are selectively connected to the thermostat thereby providing varying signals which can be delivered over the two wires between the thermostat and the system.