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. 30, 1978
Filed:
May. 27, 1975
Nino Bombelli, Urdorf, CH;
Willy Trutmann, Widen-Mutschellen, CH;
Spribag Aktiengesellschaft, Widen-Mutschellen, CH;
Abstract
A feeder-dispenser for conveying measured amounts of bulk materials, in particular for mortar and concrete, in which a rotor is mounted on a driving shaft, and placed between a pair of stationary cover discs. The rotor is formed of a plurality of chambers regularly distributed about its periphery and open at each end. The chambers are covered on their internal surfaces with an elastic material lining. The top disc has a feed orifice and an air supply opening angularly offset from it. The bottom disc is provided opposite the air supply opening with a discharge orifice. Air under compression ejects the material from the chamber and cooperates with the elastic lining to prevent retention and deposition of material in the chamber.