E - Fixed Constructions – 04 – F
Patent
E - Fixed Constructions
04
F
72/148
E04F 21/08 (2006.01) E04F 21/24 (2006.01)
Patent
CA 1297315
Abstract of the Disclosure A directionl control mechanism for a surface working machine. The surface working machine includes a frame that carries at least a pair of rotors each having a vertical rotatable shaft. Surface working means, including a plurality of radially extending blades, is operably connected to the shaft and rotates therewith. Each blade is mounted for tilting movement with respect to the rotor shaft about a horizontal axis and by simultaneously tilting the blades about the respective horizontal axes, the pitch of the blades can be varied. In addition, a second operating mechanism is included for individually tilting the blades of each rotor as the rotor rotates to effect directional control of the machine.
562094
M-B-W Inc.
Marks & Clerk
LandOfFree
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