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:
May. 05, 1987
Filed:
Feb. 20, 1986
Douglas S Marr, Cheltenham, GB;
Dowty Fuel Systems Limited, Cheltenham, GB;
Abstract
A reactivateable adsorption filter assembly comprises an adsorption filter element, a storage vessel in which is stored filtered fluid, a flow restrictor to restrict the flow of fluid between the adsorption filter element and the storage vessel and a purge valve on the inlet side of the adsorption filter element to selectively connect the filter assembly to a source of fluid at a low pressure, the arrangement being such that when the purge valve is opened to said source of fluid at low pressure filtered fluid containing adsorbate at a very low partial pressure flows back from the storage vessel through the adsorption filter element thereby reactivating said adsorption filter element.