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:
Feb. 15, 1983
Filed:
Jul. 01, 1980
Applicant:
Inventors:
Assignee:
Friedrich Wilh. Schwing, GmbH, Herne, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B08B / ;
U.S. Cl.
CPC ...
1510 / ;
Abstract
A piping valve for conduits conveying pressurized viscous material, such as concrete, provides a means for introducing a wiper into the conduit for cleaning purposes. The piping valve has a reciprocally displaceable part with a transmission pipe and a pipe chamber containing the wiper. The reciprocally displaceable part may be moved between a first position in which it is aligned with the conduit and a second position in which it receives the wiper for passage through the conduit.