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US 4,198,779 AGranted
Model aircraft propulsion system
OwnerRobert W. Kressinventor
Life of this patent
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Abstract
A multi-propeller propulsion system for model aircraft having a single engine and positive driving connections between the engine and each of the multiplicity of propellers. The positive drive may include toothed pulleys and serrated belts and gearing for example.
Claims2
Multipropeller propulsion means for model aircraft comprising
- an engine mounted on said aircraft,
- a plurality of propellers on said aircraft,
- positive synchronous drive means between said engine and said propellers including
- a toothed pulley driven by said engine,
- a plurality of toothed driving pulleys,
- each propeller operatively connected to a corresponding toothed driving pulley,
- and toothed belt means between said toothed driven pulley and
- said toothed driving pulleys for positively rotating said propellers in unison.
5 more elements
Dependencies are inferred from the claim text.