Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 8084921 | Ultrasonic motor drive apparatus An ultrasonic motor drive apparatus comprises a piezoelectric element 107 having a plurality of piezoelectrically active regions, in which longitudinal vibration and flexural vibration are induced with application of alternate signals to the plurality of piez... | 12/27/2011 |
| 7973452 | Vibration actuator A vibrator (3) is sandwiched between a base block (1) and a stator (2), and a substantially lower half of a substantially spherical rotor (6) is received in a recess (5) of the stator (2). A support member (7) is plac... | 07/05/2011 |
| 7923899 | Ultrasonic actuator An ultrasonic actuator (3) includes an actuator body (4) performing a plurality of vibrations including a bending vibration, and a driver element (5) which is attached to a long side surface (40b) of the actuator body (4), a... | 04/12/2011 |
| 7545078 | Actuator for moving a tool An actuator for moving a tool is disclosed, comprising a housing in which a tappet carrying a tool holder is guided axially movable, wherein the tappet is movable by means of a fast drive, e.g. by a piezo drive or by a nanotube drive, which is biased against a resto... | 06/09/2009 |
| 7285895 | Ultrasonic medical device and method Ultrasonic devices having transducer assembly including a stack of alternating electrodes and piezoelectric elements. A mounting device having a first and second end is adapted to receive ultrasonic vibration from the stack and transmit it from the first to the seco... | 10/23/2007 |
| 7253552 | Piezoelectric actuator, timepiece, and portable device A rectangular vibrating plate 10 in which a piezoelectric element and a reinforcing plate are stacked is supported on a main plate by a support member 11, and is urged toward the rotor 100 by an elastic force of the support member 11. Thi... | 08/07/2007 |
| 7208861 | Electromechanical drive element In manufacturing electromechanical drive elements, vibration properties are defined in a test environment. These properties are found to give a good operation when being arranged in a motor. Two flexural vibration modes are defined. One is an s-mode connected to an ... | 04/24/2007 |
| 7148605 | Biaxial piezoelectric motor A piezoelectric motor that allows movement of an arbitrary object in an arbitrary direction is described. The piezoelectric motor includes at least two piezoelectric drives positioned to direct energy at an angle to each other. A contact element translates the energ... | 12/12/2006 |
| 7116038 | Ultrasonic motor, an operating apparatus, an optical apparatus and an electric instrument An ultrasonic motor of the present invention has a vibrating element 6. The vibrating element 6 includes a first piezoelectric element 62 that undergoes extension and contraction by application of an AC voltage, a reinforcing plate 63 hav... | 10/03/2006 |
| 7116037 | Rotary drive device A rotary drive device is configured to be reduced in size while still delivering a prescribed torque. The rotary drive device has a base part with a vibrating body and a rotating body attached to the base part. The vibrating body has at least one piezoelectric eleme... | 10/03/2006 |
| 6909223 | Rotation/displacement converting actuator A rotation/displacement converting actuator has an actuator unit constituted by a displacing body and an actuator in which the displacing body can be linearly displaced. The actuator has a pair of plate-shaped bases, a rotor, a vibrating element that rotates the rot... | 06/21/2005 |
| 6831393 | Linear actuator A linear actuator is an actuator for directly driving (moving) a slider. The linear actuator has an actuator unit constituted by the slider and an actuator body on which the slider is movably provided for linear movement. The actuator body has a base, a vibrating el... | 12/14/2004 |
| 6262514 | Bearings and supports The application seeks to eliminate errors introduced by bearings and supports. It does so by integrating the drive means, in the form of a piezoelectric actuator, into the bearing or support. Thus the bearing no longer acts against the drive means, elimin... | 07/17/2001 |
| 5506462 | Vibration motor Disclosed is a motor having a rotor driven by a vibrator generating a vibration of rope skipping motion. The rotor has a friction portion which is in contact with the friction portion of the vibrator so as to be given the vibration of rope skipping motion... | 04/09/1996 |
| 5352949 | Vibration driven actuator A first ball lace and a second ball lace, which is arranged at a position opposite to the first ball lace to sandwich a ball between itself and the first ball lace are coaxially assembled in a pencil shaped vibration driven motor or actuator, so that the ... | 10/04/1994 |
| 4975614 | Ultrasonic driving device A stator includes piezoelectric vibrators of piezoelectric ceramic put between a long metal block and a short metal block, which are fixed with screw threads at opposite ends of a bolt. When a high frequency alternating current voltage is applied to the p... | 12/04/1990 |
| 4933590 | Ultrasonic motor This invention provides an ultrasonic motor using a bolt-tightened Langevin type torsional vibrator as a stator. The stator produces a vibrational energy to be converted into a rotational energy for a rotor contacted with the stator. The rotor is provided... | 06/12/1990 |
| 4893046 | Ultrasonic driving device A rotary member rotatably supports a plurality of balls, disks or rolls which are pressed on a stator by a pressure member. When the stator generates progressive wave, the balls, disks or rolls are rolled on the stator and the pressure member by the progr... | 01/09/1990 |
| 4893045 | Ultrasonic driving device A stator is composed by two metal blocks, a piezoelectric vibrator and vibrators, and two electrodes, in which one electrode is divided in two at least, the metal blocks, the piezoelectric vibrator or vibrators and two electrodes are fixed by means of a b... | 01/09/1990 |
