Class / Patent application number | Description | Number of patent applications / Date published |
310344000 |
Sealed unit
| 112 |
310343000 |
With heating element
| 7 |
310342000 |
For plural piezoelectric elements | 2 |
20100327700 | VIBRATING ELEMENT APPARATUS - The invention describes a vibrating element apparatus, preferably a tuning fork liquid level transducer, and a method of forming the same, which is particularly suitable form operation in environments subject to prolonged operation at markedly different temperatures. A piezoelectric stack, which generates vibration of the tines, is located within a hollow body defined by a diaphragm, from which the tines extend, and a wall section. Associated with the stack are a pair of thermal compensating elements which expand or contract as the apparatus is subjected to differing temperatures. The thermal compensating elements are selected and sized, having regard to the stack components, so that the stack and thermal compensating elements expand and contract to substantially the same amount as the structure in which the stack is supported. | 12-30-2010 |
20140097725 | EFFICIENT COOLING OF PIEZOELECTRIC TRANSDUCERS - A sealed piezoelectric transducer having a single, uniform, electrically insulating, heat-conducting layer of a soft, rubbery material filled with a fine, homogeneously-dispersed powder having high thermal conductivity. The material is placed in contact with the surfaces of the transducer and conducts the heat from the surfaces to an external heat sink. Since the thermally conductive powder is fully encapsulated in the rubbery material, its abrasive properties are neutralized. The softness of the material ensures that the vibration of the transducer does not transmit significant acoustic energy into the material, thereby avoiding the generation of parasitic heat. In addition, the layer fills the entire gap between the transducer and the heat sink, thereby removing any possibility of moisture-related arcing. | 04-10-2014 |
Entries |
Document | Title | Date |
20080224570 | Transformer Arrangement Having a Piezoelectric Transformer - A transformer arrangement is specified which includes a piezoelectric transformer with a main body ( | 09-18-2008 |
20120181902 | ULTRASOUND TRANSDUCER ELEMENT AND METHOD FOR PROVIDING AN ULTRASOUND TRANSDUCER ELEMENT - An ultrasound transducer element includes a piezoelectric layer, a front end body, and a backing layer assembly. The piezoelectric layer extends between opposite front and back sides and is configured to transmit acoustic waves from the front side. The front end is body disposed proximate to the front side of the piezoelectric layer and is configured to emit the acoustic waves out of a housing. The backing layer assembly is disposed proximate to the back side of the piezoelectric layer. The backing layer assembly includes a first thermally conductive mesh disposed in a matrix enclosure. The first thermally conductive mesh is positioned to conduct thermal energy away from the piezoelectric layer. In one aspect, the first thermally conductive mesh is a grid of elongated strands of a metal or metal alloy material oriented in at least one of transverse or oblique directions. | 07-19-2012 |
20120326567 | PIEZOELECTRIC VIBRATING DEVICE CAPABLE OF HEAT DISSIPATION AND CONDUCTION - A piezoelectric vibrating device comprises a metallic containing member, a piezoelectric member and a heat dissipating and conducting member. The piezoelectric member is provided within the metallic containing member, and the heat dissipating and conducting member includes a plurality of the heat dissipating and conducting fins. Each the heat dissipating and conducting fin has a first heat conduction connecting end and a second heat conduction connecting end, wherein the first heat conduction connecting end is provided on an external surface of the piezoelectric member, and the second heat conduction connecting end is connected with an inner wall surface of the metallic containing member. The piezoelectric member generates vibrations with specific polarization directions based on a piezoelectric controlling signal, and the heat energy generated from the vibration of the piezoelectric member is conducted to the external wall surface of the metallic containing member through the heat dissipating and conducting member. | 12-27-2012 |
20130113340 | VIBRATION WAVE MOTOR - Provided is a vibration wave motor including: a vibration member having an elastic body joined with a electric-mechanical energy converter; and a moving member contacting the vibration member, the vibration member and the moving member being annularly formed, the vibration wave motor frictionally driving the moving member by a motion generated at a contacting portion with the moving member of the vibration member upon application of an AC signal to the electric-mechanical energy converter. The vibration wave motor includes a centrifugal fan provided at an outer peripheral portion and/or an inner peripheral portion of a circular ring formed of the vibration member and the moving member, and the centrifugal fan rotates integrally with the moving member. | 05-09-2013 |
20130134834 | BACKING MEMBER, ULTRASONIC PROBE, AND ULTRASONIC IMAGE DISPLAY APPARATUS - A backing member is provided in an ultrasonic probe on a side of the ultrasonic probe opposite from a transmission direction of an ultrasonic wave to a subject with respect to an ultrasonic vibrator that transmits the ultrasonic wave to the subject. The backing member includes a plate-like backing material, a thermal conductor, and a thermal conductive plate, wherein the thermal conductor and the thermal conductive plate are made of a material having a thermal conductivity higher than a thermal conductivity of the backing material, wherein the thermal conductor is buried in the backing material, and formed to have a columnar shape so as to reach both of two plate surfaces of the backing material, and wherein the thermal conductive plate is provided on at least the plate surface of the backing material that is near the ultrasonic vibrator. | 05-30-2013 |
20130334931 | BACKING MEMBER, ULTRASONIC PROBE, AND ULTRASONIC IMAGE DISPLAY APPARATUS - A backing member is provided in an ultrasonic probe on a side of the ultrasonic probe opposite from a transmission direction of an ultrasonic wave to a subject with respect to an ultrasonic vibrator that transmits the ultrasonic wave to the subject. The backing member includes a plate-like backing material, a thermal conductor, and a thermal conductive plate, wherein the thermal conductor and the thermal conductive plate are made of a material having a thermal conductivity higher than a thermal conductivity of the backing material, wherein the thermal conductor is buried in the backing material, and formed to have a columnar shape so as to reach both of two plate surfaces of the backing material, and wherein the thermal conductive plate is provided on at least the plate surface of the backing material that is near the ultrasonic vibrator. | 12-19-2013 |
20140375171 | ULTRASOUND TRANSDUCER AND METHOD FOR MANUFACTURING AN ULTRASOUND TRANSDUCER - An ultrasound transducer includes an acoustic layer having a front side and an opposite back side. The acoustic layer is configured to convert electrical signals into ultrasound waves to be transmitted from the front side toward a target. The acoustic layer is configured to convert received ultrasound waves into electrical signals. A lens is connected to the front side of the acoustic layer. A heat sink is connected to the back side of the acoustic layer. A flex circuit is disposed between the acoustic layer and the heat sink. The flex circuit includes a backside matching layer incorporated into a body of the flex circuit. The backside matching layer is connected in thermal communication with the acoustic layer and the heat sink such that the backside matching layer is configured to conduct heat from the acoustic layer to the heat sink. | 12-25-2014 |