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. 06, 1987
Filed:
Dec. 16, 1985
James C McGill, Tulsa, OK (US);
John W Schindeler, Jr, Tulsa, OK (US);
Eugene C McGill, Skiatook, OK (US);
Robert L Rawlings, Tulsa, OK (US);
McGill Incorporated, Tulsa, OK (US);
Abstract
An improved purging process in which purge gas is flowed through a flare system at a sufficient flow rate to minimize or at least acceptably control the rate of back flow of air migration into the exit port of the system. The flow of purge gas is periodically terminated (or reduced) for a predetermined interval of time during which air begins to migrate into the flare system. During this purge gas cessation interval, the flow rate of the flare gas is sensed, and depending upon predetermined flow rate ranges for the flare gas, the purge gas cessation is continued during the cessation interval or a partial purge gas flow is commenced to assure that the total gas flow rate in the system is maintained above a predetermined flow rate. In any event, once the cessation interval of time has lapsed, the full purge gas flow is re-established to assure that air migration is cleared from the system.