Inertial rotation device

Details Inertial rotation device Inertial rotation device

2005-09-06

2005-09-06

Budd, Mark (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S333000

Reexamination Certificate

active

06940210

ABSTRACT:
An inertial positioning device comprising: a base plate (10); a top plate (20) for mounting an element to be rotated; a rotation member (16) having a column (18) on which the top plate is mounted in frictional engagement for slip-stick rotational motion; and a pair of piezoelectric actuators (12) each secured to the base plate at one end and to lateral extensions (17) of the rotation member at their other ends. Simultaneous actuation of the piezoelectric actuators rotates the column of the rotation member about its axis. When a suitable asymmetric drive signal is supplied to the piezoelectric actuators, the top plate is rotated by slip-stick motion. The device is compact, has a good load capacity for an inertial motor and is operable in extreme environments such as liquid helium temperatures, high vacuum and high magnetic fields.

REFERENCES:
patent: 4195243 (1980-03-01), Thaxter
patent: 4455501 (1984-06-01), Tojo et al.
patent: 4578607 (1986-03-01), Tojo et al.
patent: 4585969 (1986-04-01), Tanaka
patent: 4686440 (1987-08-01), Hatamura et al.
patent: 5079471 (1992-01-01), Nygren, Jr.
patent: 5237238 (1993-08-01), Berghaus et al.
patent: 5410206 (1995-04-01), Luecke et al.
patent: 5705878 (1998-01-01), Lewis et al.
patent: 6136201 (2000-10-01), Shah et al.
patent: 6359370 (2002-03-01), Chang
patent: 464 764 (1992-01-01), None
patent: 675 589 (1995-10-01), None
patent: 747 977 (1996-12-01), None
patent: 2 316 222 (1998-02-01), None
patent: 6-261559 (1994-09-01), None
patent: WO 98/19347 (1998-05-01), None
patent: WO 00/54004 (2000-09-01), None
Eng L.M. et al., “Inexpensive, reliable control electronics for stick-slip motion in air and ultrahigh vacuum”, Review Of Scientific Instruments, vol. 67, No. 2, Feb. 1996, pp. 401-405, XP002197710.
Zesch W. et al., “Inertial Drives for Micro- and Nanorobots:Two Novel Mechanisms”, Microrobotics And Micromechanical Systems, Philadelphia, PA USA, vol. 2593, 1995, pp. 80-88.
Yakimov V., “Scanning tunneling microscope with a rotary piezoelectric stepping motor”, Review of Scientific Instruments, vol. 67, No. 2, Feb. 1996, pp. 384-386.
Howald L. et al., “Piezoelectric inertial stepping motor with spherical rotator” Review Scientific Instruments, vol. 63, (1992), pp. 3909-3912.
Renner et al., “A vertical piezoelectric inertial slider”, Review Scientific Instruments, vol. 61, (1990), pp. 965-967.

Affiliated with

Also associated with

Rating

Inertial rotation device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Inertial rotation device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inertial rotation device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3379264