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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7652407 | Driving device capable of improving a shock and vibration resistance thereof A driving device includes an electro-mechanical transducer having first and second end portions opposite to each other in an expansion/contraction direction, a static member coupled to the first end portion of the electro-mechanical transducer, a vibration friction ... | 01/26/2010 |
| 7328616 | Digital angular velocity detection device A digital angular velocity detection device, including a stat or formed on a substrate. A rotor operable to rotate in response to an external force is provided. The rotor has a plurality of electrodes formed at regular intervals on a curve at a predetermined radius ... | 02/12/2008 |
| 7253553 | Electronic component Provided is an electronic component permitting lead wires or the like to be securely soldered to a plurality of respective terminal electrodes connected to electroconductive members in through holes. On a surface 7a of a stack-type piezoelectric device... | 08/07/2007 |
| 7215057 | Commutator housing for an electric motor A commutator housing for an electric motor includes a support to receive a commutator having at least two integrated stops and at least two brushes each fixed on a spring component. The spring components force the brushes into a contact position against the commutat... | 05/08/2007 |
| 7104394 | Conveying apparatus with piezoelectric driver A conveying apparatus comprises an elongated conveying bed which includes a proximal end and a distal end. A support structure for the conveying bed accommodates vibratory motion of a portion of the conveying bed extending from the proximal end a substantial distanc... | 09/12/2006 |
| 7011887 | IT-cut quartz crystal unit An IT-cut quartz crystal unit has a discoidal or a rectangular quartz crystal blank which is cut from a crystal of quartz along a plane perpendicular to the Y-axis of the crystal of the quartz which is rotated over approximately 34° about the X-axis, and further ro... | 03/14/2006 |
| 6984917 | Optical element having two axes of rotation for use in tightly spaced mirror arrays A rotatable element includes a plate, a plate support, a cradle and a cradle support. The plate is coupled to the cradle via the plate support. The cradle is coupled to a surrounding frame by the cradle support. The plate and cradle are suspended over a cavity so th... | 01/10/2006 |
| 6975043 | Pressurized gas to electrical energy conversion for low-power field devices An industrial process field device with improved power generation is provided. The process device can be a process variable transmitter, process actuator, or any other suitable field device. The field device includes a wireless transceiver that transceives informati... | 12/13/2005 |
| 6894616 | Piezo-electric tag A piezo-electric tag in the form of a card has a first dipole antenna, a first rectification circuit, a piezo-electric transformer, a second rectification circuit, and a transponder circuit. In operation, the antenna receives incoming radiation and generates a corre... | 05/17/2005 |
| 6858956 | Magnetic pole position detector for rotor A rotor (17, 31, 71, 91, 101, 121, 131, 141, 201, 401) of a motor (13, 51) is provided with a rotation shaft (21, 59, 410) and a plurality of magnets (15, 53, 75, 105, 210A, 210B, 411) on a circular periphery. Plates (25,... | 02/22/2005 |
| 6848328 | Positioning unit and positioning apparatus with at least two positioning units A positioning unit (1) includes an accelerating nanodrive (2), which has a resolution of at least ±10 nm, a slider (5) and a module (6, 7), which has a stationary component (6) and a component (7) movable for this purpose. ... | 02/01/2005 |
| 6762536 | Piezoceramic bending transducer and use thereof A piezoelectric bending transducer includes a support body, a stack of piezo-ceramic layers, arranged thereon and flat electrodes arranged between the layers. On the side of the support body facing the stack, an adaptation layer is arranged with essentially the same... | 07/13/2004 |
| 6753640 | Piezoelectric driven type vibratory feeder A piezoelectric driven type vibratory feeder having a working mass member that vibrates stably over an entire area of the working mass member is disclosed. The piezoelectric driven type vibratory feeder includes a base, a plurality of first plate springs, with a low... | 06/22/2004 |
| 6667673 | Dual-mode surface wave filter with enhanced symmetry and optionally enhanced stop-band attenuation A dual mode SAW filter is provided with improved symmetry and/or blocking attenuation by selecting the structure in one-track, two-track embodiment and with potentially split track, in which first transducers and second transducers, these as input transdu... | 12/23/2003 |
| 6628048 | Crystal oscillator with improved shock resistance A crystal oscillator with an improved shock resistance is disclosed. A pair of supporting protuberances protrude within an oscillator main body. A conductive adhesive is spread on the pair of the supporting protuberances, and a quartz blank is bonded to t... | 09/30/2003 |
| 6367332 | Triboelectric sensor and methods for manufacturing Triboelectric sensors which generate electrical signals in response to mechanical disturbances creating relative motion of conducting and dielectric components of the sensor are fabricated from thin metal foil which is plastic-coated on one side and which... | 04/09/2002 |
| 5965968 | Electrostatic motor An electrostatic motor and its method of production. This electric motor, comprising a fixed part (200, 204, 206, 208) called a stator with a deformable resilient membrane (208) and a moving part (230) called a rotor arranged on the membrane (208) and driven b... | 10/12/1999 |
| 5698914 | Starter with a discharge hole on a yoke In a starter motor for a starter, a plurality of permanent magnets are arranged circumferentially inside a cylindrical yoke and outside an armature. A cylindrical sleeve is fitted with the permanent magnets to radially outwardly fix the permanent magnets ... | 12/16/1997 |
| 5057734 | Apparatus for driving piezoelectric element for closing and opening valve member In an apparatus for driving a piezoelectric element used for closing and opening a valve member, a first-step voltage is applied to the piezoelectric element to move the valve element near to a valve seat, and thereafter, a second-step voltage higher than... | 10/15/1991 |
| 4845301 | Process for the preparation of -hdroxyketones A process for the preparation of -hydroxyketones ##STR1## having a high purity in a good yield from a compound ##STR2## by rearrangement reaction in aqueous alkaline solution, where R1 and R3 each represent an alkyl,... | 07/04/1989 |
| 4839618 | Monolithic crystal filter with wide bandwidth and method of making same A monolithic coupled-dual resonator crystal filter is produced for operation with wide bandwidths (especially at high center frequencies) by providing an ultra-small gap between juxtaposed resonator electrodes. A gap width of substantially less than 0.006... | 06/13/1989 |
| 4784154 | Interference resistant biomedical transducer An interference resistant biomedical transducer for monitoring the acoustic output of a patient's cardiac or respiratory system which provides a high degree of rejection of acoustic noise and spurious electromagnetic signals. The transducer comprises a pi... | 11/15/1988 |
| 4545553 | Piezoelectric deicing device A fast voltage pulse is applied to a transducer which comprises a composite of multiple layers of alternately polarized piezoelectric material. These layers are bonded together and positioned over the curved leading edge of an aircraft wing structure. Eac... | 10/08/1985 |
| 4539502 | Magnetic feedthrough cancelling surface acoustic wave device A surface acoustic wave (SAW) device has an input interdigitated transducer (IDT) and an output IDT. One of the transducers is formed as two loops which are interconnected so that unwanted magnetic feedthrough voltages induced in or by such current loops ... | 09/03/1985 |
| 4472653 | Electrode pattern for surface acoustic wave device A surface acoustic wave device comprises on a piezoelectric substrate a first interdigital electrode array for converting electric signals into surface acoustic waves and a second interdigital electrode array for receiving the surface acoustic waves propa... | 09/18/1984 |
| 4066920 | Electrostatically chargeable device The disclosure relates to an electrostatically rechargeable device comprising a body having a rubbing end adapted to be rubbed against fabric or other material for electrostatically charging the device. The device is preferably made of teflon and may util... | 01/03/1978 |
