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:
Jan. 31, 1978
Filed:
Apr. 23, 1976
Applicant:
Inventor:
Donald Holdt, Cambridge, MD (US);
Assignee:
Chemed Corporation, Cincinnati, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
F22B / ; F22B / ;
U.S. Cl.
CPC ...
122382 ; 1225042 ; 3402 / ;
Abstract
A combined timer, blow down warning device, chemical pump, and controller for boilers. The circuit comprises an electro-mechanical array of relays, flashing lights and alarms and an electronic tripper which operates from the rate of change in temperature in the blow down tailpipe, to turn off the lights and alarms only after a manual blow down operation has been performed.