USPC 416/127
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USPC 416/127 is a patent subclass for devices with control mechanisms over impellers (propeller blades) on a common axis.[1]
USPC 416/124 is a patent subclass for devices with "coaxial impellers", basically meaning multiple propellers on a common axle.[2] Nearby class tree:[2]
- USPC 416/124 Coaxial rotation. Apparatus wherein the plural impellers are supported for rotation about a common axis.
- USPC 416/125 Individual prime mover. Apparatus wherein the impellers are each driven by a separate power sources.
- USPC 416/126 Concentric working members. Apparatus wherein the coaxial impellers rotate one inward of the other on the same radial plane.
- USPC 416/127 Concurrent adjustment. Apparatus in which the coaxial impellers are arranged to be adjusted simultaneously by positive means. See USPC 416/128+, for oppositely rotating "free blade" impellers in which an adjustment caused by aerodynamic forces may or may not be simultaneous.
- USPC 416/128 Oppositely rotating impellers, sharing an axis
- USPC 416/129 Engine driven. Apparatus comprising a source of mechanical power rotating the plural impellers
References
- ↑ Description of USPC 416/127 at uspto.gov
- ↑ Jump up to: 2.0 2.1 Description of USPC 416/124 at uspto.gov
This wiki has 2 patents in category "USPC 416/127". Other techtypes related to USPC 416/127: CPC B64C11/48
Patents in category USPC 416/127
- Patent US-1915-1247412 (English title: Flying-machine, Inventors: Simon Lake, Filing date: 1915-10-13)
- Patent US-1920-1454944 (English title: Helicopter propeller system, Inventors: Raúl Pateras Pescara, Supplementary to patent: Patent ES-1919-07-03-Pescara, Filing date: 1920-07-15)
| Enclosing categories | USPC 416/124. USPC 416/120 |
|---|---|
| Subcategories | |
| Keywords | Propellers |
| Start year | |
| End year |
