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:
Jul. 11, 1995
Filed:
Jul. 12, 1993
Applicant:
Inventor:
Robert L Koble, Jr, Camp Verde, AZ (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D / ;
U.S. Cl.
CPC ...
4174238 ; 41742311 ; 415230 ;
Abstract
Pump apparatus for an evaporative cooler includes an impeller housing sealed on its top wall by a closed cell foam element and a bearing and seal element. The impeller housing has only one water inlet and one water outlet. The sealing of the impeller housing allows the level of the water in which the pump is disposed to be substantially lower than with prior art pumps, and substantially eliminates air intake into the impeller housing except through the one water inlet. Water outflow is only through the impeller housing outlet. Two embodiments are illustrated.