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. 05, 1999
Filed:
Nov. 04, 1996
Richard Dye, Warren, NJ (US);
John Lowsky, Jr, Fayetteville, NC (US);
Advanced Performance Technology, Inc., Lugoff, SC (US);
Abstract
A filter assembly including a filter housing having a standpipe extending upwardly therethrough, in which is located a spring-biased flow element, and about which is received a replaceable filter element. A screw threaded cover is removably attached to the housing. The filter element includes an upper endcap, a center tube, a lower endcap and cylindrical filter media around the center tube. The lower endcap includes a central opening which receives upwardly therethrough the standpipe in sealed relation. A separate actuator with a projection formed to extend therefrom is located in the center tube, either fixedly or movably, below the upper endcap. When the filter element is placed over the standpipe, and the cover attached to the housing, the projection on the actuator pushes down against the spring-biased flow element, putting cavities formed in the flow element and openings formed in the standpipe in fluid communication. This alignment allows fluid to flow between an area inside the media adjacent the standpipe, to the interior of the standpipe, and out an outlet port of the housing. When the filter element is removed from the housing, for replacement with a new filter element, the projection is removed from the flow element, which returns to its original position to prohibit the fluid communication.