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. 14, 1985
Filed:
Sep. 26, 1983
Edwin C Lewis, Houston, TX (US);
Helmut Henschenmacher, Brachelen, DE;
Karl-Heinz Ecker, Erkelenz, DE;
Hartmut Giernalczyk, Geilenkirchen, DE;
Siegfried Rutte, Geilenkirchen, DE;
Other;
Abstract
Closure for openings in the housings or covers of piston pumps or the like to withstand an operating pressure which is in part an alternating load comprising an inner cover, a loadable and releasable pressure-applying member therefor, a loading device for the pressure-applying member, and for the purpose of satisfactorily meeting the requirements of practical operation without critically loading screw-threads, the loading device comprises a compression spring arranged between the pressure-applying member and a backing member, and a biassing device is provided for producing a releasing force acting in the direction opposite to that of the force of the compression spring to initially release the spring force on the pressure-applying member so that the backing member can be finally adjusted into a position to produce the desired compressive force in use.