Rotary Transducer with Improved High Frequency Output
OwnerF. Bruce Thigpeninventor
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Abstract
A rotary sound transducer having an improved output at higher frequencies. The invention includes stiff vanes that are preferably rigidly attached to a hub. A torsional actuator is provided in each vane. The torsional actuator selectively twists the tip portion of each vane. The torsional actuator for each vane is activated by an input energy source corresponding to the sound waves that are desired. The input force may also be electromechanical energy, purely mechanical energy, or some other form of energy.
Claims20
A method for transforming cyclical input energy into sound, comprising:
- a. providing a hub;
- b. providing a plurality of vanes, each vane including,
- i. a hub interface connected to said hub,
- ii. a root extending outward from said hub interface,
- iii. a middle region extending outward from said root,
- iv. a variable pitch region extending outward from said middle region,
- v. a torsional actuator configured to twist said variable pitch region, said torsional actuator including a torque input interface proximate said hub interface;
- c. providing a mechanical transducer configured to transmit said cyclical input energy to torque applied at said torque input interface on said vanes;
- d. rotating said hub, thereby rotating said plurality of vanes;
- and
- e. while said hub is rotating, applying said cyclical input energy to said mechanical transducer, thereby cyclically twisting said vanes and producing sound.
A method for creating sound, comprising:
- a. providing a plurality of vanes arrayed around a central axis of rotation, each vane including,
- i. a hub interface proximate said central axis of rotation,
- ii. a root extending outward from said hub interface,
- iii. a middle region extending outward from said root,
- iv. a variable pitch region extending outward from said middle region,
- v. a torsional actuator configured to twist said variable pitch region, said torsional actuator including a torque input interface proximate said hub interface;
- b. rotating said vanes about said central axis of rotation;
- and
- c. while said vanes are rotating, cyclically applying torque to said torque input interface on each of said vanes, thereby cyclically twisting said vanes and creating said sound.
A method for creating sound, comprising:
- a. providing a plurality of vanes connected to a hub, each vane including,
- i. a hub interface rigidly connected to said hub,
- ii. a root extending outward from said hub interlace,
- iii. a middle region extending outward from said root,
- iv. a variable pitch region extending outward from said middle region,
- v. a torsional actuator passing through said vane from said hub interface to said variable pitch region, said torsional actuator being configured to twist said variable pitch region and including a torque input interface proximate said hub interface;
- b. rotating said hub thereby rotating said vanes;
- and
- c. while said vanes are rotating, cyclically applying torque to said torque input interface on each of said vanes, thereby cyclically twisting said vanes and creating said sound.
Dependencies are inferred from the claim text.