Rotary pump with shaft/rotor connection
US5370514A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1993 |
| Grant date | Dec 6, 1994 |
| Priority date | — |
| Expiry date | Jun 21, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2230/70
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A rotary pump having a plurality of rotor structures disposed in a pump casing, each structure having a rotor disposed in a casing, a hollow drive shaft each for driving said rotor, a headed bolt disposed within the hollow drive shaft for attaching said rotor to the drive shaft, an internally threaded rotor shaft being attached to the rotor and having said bolt threaded therein, the rotor shaft being disposed within an enlarged diameter hollow end of the hollow drive shaft, and the head of the bolt is disposed at the end of the hollow drive shaft opposite to its end to which the rotor is attached, whereby no rotor attaching means are employed on the face of the rotor opposite to the rotor shaft, and the pump casing has a flat rotor cover over the rotor structures, without any substantial spaces between the rotor cover and the rotors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.