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. 28, 1994
Filed:
Apr. 14, 1993
Applicant:
Inventor:
Darryl G Hurmi, Elk Grove Village, IL (US);
Assignee:
Landis & Gyr Powers, Inc., Deerfield, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F24F / ;
U.S. Cl.
CPC ...
236 38 ; 165 39 ; 236 84 ;
Abstract
A controller for unit ventilators which include processing means having associated memory that enables control schemes to be used. The controller is modular and compact in its construction, is easily installed in existing unit ventilators and provides not only the controlled pneumatic pressure in the output lines for the controller, but also provides electrical control signals for controlling the operation of the fan. The controller is adapted to control unit ventilators having auxiliary radiation and is also adapted to control ASHRAE cycle 3 type installations.