| US 7,600,974 B2 | ||
| Radial blade wheel | ||
| Rune Svensson, Huskvarna (Sweden); Jan-Erik Henningsson, Huskvarna (Sweden); Lennart Sjöqvist, Huskvarna (Sweden); Juha Laurila, Tampere (Finland); and Heikki Stenberg, Nousiainen (Finland) | ||
| Assigned to Flaekt Woods AB, Joenkoeping (Sweden) | ||
| Filed on Feb. 21, 2006, as Appl. No. 11/357,112. | ||
| Claims priority of application No. 20055079 (FI), filed on Feb. 21, 2005. | ||
| Prior Publication US 2006/0222500 A1, Oct. 05, 2006 | ||
| Int. Cl. F04D 29/38 (2006.01) | ||
| U.S. Cl. 416—183 [416/228] | 8 Claims |
| 1. A radial blade wheel, comprising:
blades;
a first wall connected with the blades and having an opening for enabling a flow through the wall to the blades; and
a second wall connected with the blades, by which the radial blade wheel may be connected with an apparatus configured to
rotate the radial blade wheel; and
wherein the blades protrude in a radial direction to a diameter which diminishes at intervals from the first wall towards
the second wall such that a diameter of the blades at the first wall is larger than a diameter of the blades at the second
wall; and
wherein the blades comprise, in the vicinity of the first wall, a first section where the radial protrusion of the blades
remains unchanged towards the second wall, and the blades comprise, in the vicinity of the second wall, a second section where
the radial protrusion of the blades remains unchanged towards the first wall.
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