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:
Jun. 04, 1985
Filed:
Aug. 31, 1983
Kurt G Fickelscher, Frankenthal, DE;
Balcke-Duerr AG, Ratingen, DE;
Abstract
A fluid-flow machine, particularly of the hydraulic propeller-pump type, comprises a central hub, a bearing support fixed to the hub for rotation therewith, a plurality of blades distributed symmetrically around the hub, each blade having a pivotable blade-root for adjusting the angle of attack of the blades. The blade-roots are mounted on the bearing support for rotation around the longitudinal axis of the hub. An adjusting device pivots the blades about the longitudinal axis of the blade-roots, the latter including, for each blade, a self-locking reduction gear and a drive shaft. The bearing support is formed with open-ended housings, each corresponding to one of the blade-roots. The drive shafts, the reduction-gears and the blade-roots are mounted, at least partially, within the housings aforesaid.