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:
Mar. 05, 2013
Filed:
Apr. 06, 2010
Applicant:
John W. Tolbert, Jr., Bristol, TN (US);
Inventor:
John W. Tolbert, Jr., Bristol, TN (US);
Assignee:
Bristol Compressors International, Inc., Bristol, VA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 29/58 (2006.01); F04D 25/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A heater is provided inside a hermetic compressor to heat the fluid in an oil sump of the compressor. The heater can be substantially submerged in the fluid even at low fluid levels. The heater can raise the temperature of the fluid to a predetermined temperature to substantially maintain non-lubricant fluids in a gaseous state and prevent non-lubricant fluids from mixing with the lubricant in the sump. A feed through assembly in the compressor housing is used to supply power to both the compressor motor and the heater.