Eccentric screw pump for mortar
US8556604B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2010 |
| Grant date | Oct 15, 2013 |
| Priority date | — |
| Expiry date | Jul 18, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2240/805
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An apparatus for delivering a viscous material by means of an eccentric screw pump, includes a framework for carrying and fastening apparatus elements, a pump-housing portion for carrying a stator and a rotor in the form of a delivery screw, suction and pressure regions for introducing and discharging the delivery material, respectively, an electric drive unit for driving the rotor in the stator in a first direction of rotation for delivering the delivery material, a control mechanism for activating the drive unit, and one or more releasable retaining members for the rotationally fixed and/or positionally fixed connection of the drive unit and of the stator. A change in the direction of rotation to a second direction of rotation of the electric drive unit, with the retaining mechanism released, gives rise to automatic separation of the pump-housing portion with the stator by virtue of the rotor being unscrewed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.