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:
Dec. 13, 1994
Filed:
Nov. 02, 1992
Eugene C Briggs, Bowling Green, KY (US);
Wayne Robertson, Nashville, TN (US);
Christopher L Gansel, Nashville, TN (US);
Black Gold Corporation, Nashville, TN (US);
Abstract
An oil-burning furnace including a combustion zone and a nozzle block assembly through which oil and pressurized air are introduced into the combustion zone utilizes an oil pump of trochoidal design for delivering oil to the combustion zone at a metered rate and a purge control for withdrawing oil from the nozzle block assembly upon shut down of the furnace operation. The flow rate at which the oil pump delivers the oil to the nozzle block assembly is relatively constant regardless of the weight or viscosity of the oil burned by the furnace, and the purge control cooperates with an air compressor used for delivering air, under pressure, to the nozzle block assembly and includes an expandable zone for extracting oil from the nozzle block assembly upon a de-energizing of the air compressor. The nozzle block assembly also includes a block providing an air passageway through which air is pumped from the air compressor into the combustion zone and an electric heating element disposed within the air passageway for heating air routed therethrough. Thermostats mounted within the nozzle assembly block ensure that the block is maintained within a preselected temperature range from the outset of furnace operation.