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. 20, 1987
Filed:
Mar. 09, 1982
Johan C Richter, Oslo, NO;
Ole J Richter, Karlstad, SE;
Kamyr Aktiebolag, Karlstad, SE;
Abstract
In vertical vessels, particularly continuous pulp digesters, fibrous material suspended in liquid passes downwardly past screens through which treatment liquid is withdrawn. The screens are reciprocated vertically up and down utilizing a piston and cylinder assembly, operatively connected by a two-way valve to a source of fluid under pressure or a vent. The piston and screen are connected by a universal joint, and the screen is positively guided during movement. The piston is vertically above the screen and the screen moves downwardly under pressure from the pump, and returns upwardly, under the influence of interior digester pressure, during normal digester operation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile