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 Title: |
US4994698:
Vibratory linear motor system
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Kliman, Gerald B.; Schenectady, NY
Jones, Donald W.; Burnt Hills, NY
Tompkins, Russell E.; Scotia, NY
Brockett, Roger W.; Lexington, MA
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| Assignee: |
General Electric Company, Schenectady, NY
other patents from GENERAL ELECTRIC COMPANY (218550) (approx. 30,796)
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| Published / Filed: |
1991-02-19
/ 1990-06-13
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| Application Number: |
US1990000537847
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| IPC Code: |
Advanced:
H02K 7/065;
H02N 2/06;
Core:
H02N 2/02;
more...
IPC-7:
H02K 7/06;
H02K 7/065;
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| U.S. Class: |
Current:
310/081;
310/326;
318/135;
Original:
310/081;
310/326;
318/135;
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| Field of Search: |
310/012,20,37,51,80,81,326,328
318/009,135
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| Priority Number: |
| 1990-06-13 |
US1990000537847 |
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| Abstract: |
A vibratory linear motor system employs a comb-shaped electromagnet to excite transverse mechanical oscillations of a relatively thin, spring-like beam. The electromagnet establishes an approximate standing wave on the beam for which brakes mounted on either side of the beam provide independently established boundary conditions and produce rectified linear motion thereof. The brakes may be electromagnetically, magnetostrictively, or piezoelectrically actuated. An electronic control provides modulated currents to the exciter electromagnet and the brakes in order to control the rectified linear motion of the beam.
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| Attorney, Agent or Firm: |
Breedlove, Jill M. ;
Davis, Jr., James C. ;
Snyder, Marvin ;
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| Primary / Asst. Examiners: |
Stephan, Steven L.; Rebsch, D. L.
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| INPADOC Legal Status: |
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| Family: |
None
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First Claim:
Show all 13 claims |
What is claimed is:
1. A vibratory linear motor system, comprising:
- a spring-like beam;
- electromagnetic excitation means for exciting and maintaining periodic transverse mechanical oscillations of said beam so as to produce approximately a standing wave therealong;
- clamping means for selectively restricting translational motion of either end of said beam; and
- electronic control means for controlling said electromagnetic excitation means and said clamping means by providing currents thereto so as to convert said transverse oscillations of said beam into rectilinear motion.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 11 U.S. patent(s) that reference this one
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| Foreign References: |
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Publication |
Date |
IPC Code |
Assignee |
Title |
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JP62023381
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1987-01 |
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JP63154077
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1988-06 |
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| Other References: |
R. W. Brockett, "On the Control of Vibratory Actuators", Proceedings of the 1987 IEEE Conference on Decision and Control, Dec. 1987, pp. 1-5.
S. Uheha, "Present State of the Art of Ultrasonic Motors", Proceedings of the 9th Symposium on Ultrasonic Electronics, Sendai 1988 Japanese Journal of Applied Physics, vol. 28 (1989), Supplement 28-1, pp. 3-6.
M. Kurosawa et al., Proceedings of the 9th Symposium on Ultrasonic Electronics, Sendai 1988 Japanese Journal of Applied Physics, vol. 28 (1989) Supplement 28-1, pp. 158-160.
(3 pages)
R. W. Brockett, "On the Rectification of Vibratory Motion", Proceedings of the 1989 IEEE Conference on Micromechanical Systems, Feb. 20-22, 1989, pp. 1-4.
J. L. Butler, "Application Manual for the Design of Etrema Terfenol-D Magnetostrictive Transducers", 1988.
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