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:
Apr. 08, 1980
Filed:
Jul. 27, 1978
Applicant:
Inventors:
Bedrich Porsch, Prague, CS;
Pavel Spacek, Prague, CS;
Jaroslav Voslar, Prague, CS;
Stanislav Vozka, Prague, CS;
Miroslav Kubin, Prague, CS;
Assignee:
Ceskoslovenska akademie ved, Prague, CS;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ; F16J / ;
U.S. Cl.
CPC ...
277 27 ; 277103 ; 2771166 ; 2772 / ; 92245 ;
Abstract
The invention pertains to the sealing of pistons for pressurizing, pumping and displacing aggressive liquids and organic solvents. The design includes the sealing head proper and its attachment to the piston. Owing to its shape and material it is made of, the sealing head ensures a variable sealing thrust proportional to the pressure acting on the piston, thus enhancing the useful life of the seal.