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:
Nov. 28, 1978
Filed:
Feb. 17, 1978
Applicant:
Inventor:
James J Heaney, Glendale, CA (US);
Assignee:
Anthony's Manufacturing Company, Inc., San Fernando, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219218 ; 49 70 ; 62248 ; 62150 ; 219522 ;
Abstract
A system is described which permits the electrically heated door of a refrigerated display cabinet to be operated selectively at a plurality of power settings, providing respectively higher and lower levels of electrical heating. A switching means is used to alter the electrical interconnection of the door window heating elements with the door frame heating elements from a series connection to a parallel connection. In one embodiment, an automatic electrical controller actuates the switch in response to changes in the ambient humidity and temperature.