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:
Aug. 10, 1982
Filed:
Mar. 14, 1980
Friedrich Schwing, Herne, DE;
Gerhard Schwing, Herne, DE;
Friedrich Wilh. Schwing GmbH, Herne, DE;
Abstract
A valve structure for a viscous material pump having a material reservoir, a pair of alternately operable material conveying cylinders, discharge conduit means, and a valve control means coupled to the valve structure and to the material conveying cylinders. The valve structure has a pair of movable swivel pipes extending between the conveying cylinders and the discharge conduit means. Each of the swivel pipes has an opening movable over one of the conveying cylinders to receive the contents discharged therefrom and a plate movable over said one conveying cylinder to block same. The swivel pipes are movable by said valve control means among a first position in which said conveying cylinder is open to the reservoir to receive viscous material therefrom during the suction cycle of the cylinder, a second position in which said plate blocks said conveying cylinder during a portion of the supply cycle thereof to compress the material, and a third position in which the opening communicates with said cylinder for receiving the contents discharged therefrom during the remainder of the supply cycle for delivery to the discharge conduit means.