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:
Sep. 28, 1993
Filed:
Sep. 11, 1992
Applicant:
Inventors:
Ludwig Pruss, Braunschweig, DE;
Gerhard Preine, Braunschweig, DE;
Assignee:
Volkswagen A.G., Wolfsburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ; F15B / ;
U.S. Cl.
CPC ...
251368 ; 13762568 ;
Abstract
A slide for a slide valve consists of an injection-molded, glass fiber reinforced, mineral-filled thermoplastic material having a high thermal stability of shape, a compressive strength of not less than 110 MPa and a Rockwell hardness of not less than R-117. The only machined surfaces are ground peripheral surfaces forming the sealing surfaces of the several subdivisions of the slide, which have an intact homogeneous texture.