|
US2728869A
(en)
*
|
1950-01-06 |
1955-12-27 |
Ultraschall A G |
Piezoelectric oscillator or vibrator for ultrasonic waves, especially as an instrument for therapeutical treatment and diagnosis
|
|
DE954182C
(de)
*
|
1952-04-01 |
1956-12-13 |
Kieler Howaldtswerke Ag |
Kristallkontaktunterbrecher zur Umwandlung von geringen bis extrem kleinen Gleichspannungen in Wechselspannungen
|
|
US2787681A
(en)
*
|
1952-09-11 |
1957-04-02 |
Electro Snap Switch & Mfg Co |
Pressure actuated switches
|
|
US2770741A
(en)
*
|
1953-03-04 |
1956-11-13 |
Westinghouse Electric Corp |
Vibration pickup
|
|
US2835761A
(en)
*
|
1953-05-25 |
1958-05-20 |
Electric Machinery Mfg Co |
Electrostrictive ceramic actuator
|
|
US2792536A
(en)
*
|
1953-10-30 |
1957-05-14 |
Westinghouse Electric Corp |
Electro-magnetic solenoids and actuators
|
|
DE1031638B
(de)
*
|
1954-10-12 |
1958-06-04 |
Salfret Ltd |
Elektrisch angetriebene Membranpumpe, insbesondere fuer Fluessigkeiten
|
|
US2836671A
(en)
*
|
1954-11-18 |
1958-05-27 |
Langstroth Hall |
Fluid actuated switch
|
|
US2817727A
(en)
*
|
1954-11-26 |
1957-12-24 |
Gen Motors Corp |
Electric switch
|
|
US2867701A
(en)
*
|
1955-02-15 |
1959-01-06 |
Clevite Corp |
Device for providing reproducible mechanical motions
|
|
US3035126A
(en)
*
|
1957-12-27 |
1962-05-15 |
William W Haeffiger |
Transducer
|
|
US3230333A
(en)
*
|
1962-03-14 |
1966-01-18 |
Berman Nelson |
Capillary mercury switches
|
|
BE756000A
(fr)
*
|
1969-09-15 |
1971-02-15 |
Westinghouse Electric Corp |
Appareil de securite perfectionne sensible a la pression
|
|
US3614486A
(en)
*
|
1969-11-10 |
1971-10-19 |
Physics Int Co |
Lever motion multiplier driven by electroexpansive material
|
|
US3766415A
(en)
*
|
1972-04-18 |
1973-10-16 |
R Dame |
Piezolectric actuator
|
|
DE2342021A1
(de)
*
|
1973-08-20 |
1975-03-06 |
Siemens Ag |
Mosaikdruckkopf fuer schreibmaschinen oder aehnliche maschinen
|
|
SU714533A2
(ru)
*
|
1977-09-06 |
1980-02-05 |
Московский Ордена Трудового Красного Знамени Инженерно-Физический Институт |
Переключающее устройство
|
|
US4383195A
(en)
*
|
1980-10-24 |
1983-05-10 |
Piezo Electric Products, Inc. |
Piezoelectric snap actuator
|
|
US4454442A
(en)
*
|
1983-07-15 |
1984-06-12 |
General Dynamics Electronics Division |
Piezoelectric relay using Euler lever
|
|
US4626698A
(en)
*
|
1984-12-21 |
1986-12-02 |
General Electric Company |
Zero crossing synchronous AC switching circuits employing piezoceramic bender-type switching devices
|
|
DE3681927D1
(de)
*
|
1985-01-21 |
1991-11-21 |
Nec Corp |
Piezoelektrische bistabile betaetigungsvorrichtung mit einem projektil das einen stoss empfaengt.
|
|
US4803393A
(en)
*
|
1986-07-31 |
1989-02-07 |
Toyota Jidosha Kabushiki Kaisha |
Piezoelectric actuator
|
|
US5866971A
(en)
*
|
1993-09-09 |
1999-02-02 |
Active Control Experts, Inc. |
Hybrid motor
|
|
US6356007B1
(en)
*
|
2000-05-30 |
2002-03-12 |
Young & Franklin, Inc. |
Bi-stable snap over actuator
|
|
US7307371B2
(en)
*
|
2005-11-18 |
2007-12-11 |
Delphi Technologies, Inc. |
Actuator with amplified stroke length
|