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:
Nov. 21, 1978
Filed:
Mar. 18, 1977
Applicant:
Inventor:
Gotthold Raabe, Stuttgart-Fasanenhof, DE;
Assignee:
Robert Bosch G.m.b.H., Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277152 ; 92244 ; 277165 ;
Abstract
The double-acting measuring piston of this invention is slidably positioned in a cylinder and is provided with oppositely disposed mirror image sealing members which encompass a supporting body and are retained in abutment therewith by spaced flanges. The sealing members have foil lip portions that form between them, the cylinder wall and the supporting body an annular pressure chamber. The mirror image sealing members have oppositely disposed surface areas that are subjected to chambers containing a medium pulsating at slight pressure differences.