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. 04, 1976
Filed:
Dec. 04, 1973
Hershel Earl Wright, Decatur, IL (US);
Glasrock Products, Inc., Atlanta, GA (US);
Abstract
A plunger assembly is longitudinally movable within an outer tube having a lower closed end. The plunger assembly includes a plunger tube and a resilient piston-valve plug seated in the inner end thereof. The piston-valve plug has frictional sealing engagement with the inner walls of the outer tube, has a slit therethrough for permitting the flow of clear liquid from the lower end of the outer tube into the plunger tube when the plunger tube is moved inwardly of the outer tube, and has a port therethrough for permitting the return flow of air into the space in the outer tube below the plug when the plunger tube is moved outwardly of the outer tube. A filter element is seated in the plug to filter liquid prior to flow through the slit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile