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. 09, 1991
Filed:
Mar. 06, 1986
Gustaaf A van Ditzhuijzen, Heemstede, NL;
Hoogovens Groep B.V., , NL;
Abstract
A gas which is intermittently and/or irregularly released e.g. carbon monoxide-containing gas from an oxygen steel converter, is collected in a gas holder and delivered from the gas holder to a user installation. To avoid wastage of gas when the average release of gas varies and to permit use of a smaller gas holder, the output rate from the gas holder is determined by deriving a modified filling level signal by filtering a filling level signal of the gas holder so as to attenuate frequencies in the filling level signal above a predetermined limit frequency by a factor of at least ten, and adjusting the rate of delivery of the gas from a gas holder in dependence on variations in said modified filling level signal, such adjustment being in the same direction (up or down) as the variation in the modified filling level signal.