U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Conducting polymer driven rotary motor

Patent 6084321 Issued on July 4, 2000. Estimated Expiration Date: Icon_subject August 7, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Direct conversion of solar energy to mechanical energy
Patent #: 4075847
Issued on: 02/28/1978
Inventor: Ray

Radiant heat engine Patent #: 4598550
Issued on: 07/08/1986
Inventor: Abbott

Inventors

Application

No. 130500 filed on 08/07/1998

US Classes:

310/20, Motion-converting mechanism310/367, Piezoelectric element shape310/369Circular disc, ring, or cylinder

Examiners

Primary: Ramirez, Nestor
Assistant: Jones, Judson H.

Attorney, Agent or Firm

Foreign Patent References

  • 0 547 580 EP. 06/13/1993
  • 1 343 024 FR. 02/13/1964
  • 405474 DE. 11/13/2012
  • 195 14 263 DE. 10/13/1996

International Class

H02K 007/06

Abstract

A rotary actuator for applying torque to a crank with respect to a member. The rotary actuator has a substantially planar sheet of anisotropic conducting polymer, portions of which are activated in temporal sequence to produce rotation of the crank with respect to the axis of the crank. Actuation is achieved by contraction of successive portions of the sheet as electrical current causes differential strain in the sheet.

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