161 |
Micro-relay and method for manufacturing the same |
US09254030 |
1999-02-26 |
US06407482B2 |
2002-06-18 |
Minoru Sakata; Takuya Nakajima; Tomonori Seki; Teruhiko Fujiwara |
A thin plate-shaped substrate 21 comprised of a monocrystal is provided with a piezoelectric element 24, and both ends of a movable piece 20 whose one surface is provided with a movable contact 25 are fixed and supported to a base 11. Then, by curving the movable piece 20 via the piezoelectric element 24, the movable contact 25 is brought in and out of contact with a pair of fixed contacts 38 and 39 that face the movable contact. With this arrangement, a subminiature micro-relay having a mechanical contact mechanism that has a small resistance in turning on the contact and the desired vibration resistance, frequency characteristic and insulating property can be obtained. |
162 |
Mems magnetically actuated switches and associated switching arrays |
US09487976 |
2000-01-20 |
US06366186B1 |
2002-04-02 |
Edward A. Hill; Ramaswamy Mahadevan |
A MEMS electrical cross-point switch is provided that includes a microelectronic substrate, a magnetic element attached to the microelectronic substrate that is free to move in a predetermined direction in response to a magnetic field and an electrical element connected to the magnetic element for movement therewith to selectively switch electric current. In one embodiment the magnetic element and the electrical element are connected via a tethering device that acts as a platform for the magnetic and electrical elements. The electrical cross-point switch may also comprise a clamping element that serves to lock the switch in an open or closed position to circumvent the magnetic actuation of the switch. In another embodiment, the invention provides for a MEMS electrical cross-point switching array that includes a microelectronic substrate, a magnetic field source in circuit with said microelectronic substrate, a plurality of first and second electrical lines disposed on the microelectronic substrate in an array formation, and a plurality of the in-plane MEMS electrical cross-point switches as described above disposed at the cross point of a first and second electrical line. In one embodiment the array is configured in a N×N or N×M array having a series of crossing first and second electrical load lines. In another configuration the array has a series of first electrical load lines that extend radially from a central point of reference and a series of second electrical load lines that extend outward, in spoke-like fashion, from the central point of reference. |
163 |
Bi-stable microswitch including shape memory alloy latch |
US09885168 |
2001-06-21 |
US20020036562A1 |
2002-03-28 |
Dinesh
Kumar
Sood; Ronald
Barry
Zmood |
A bi-stable microswitch (1) including a pair of contacts (6, 7) and an armature (4) movable between a first position and a second position to selectively make or break the pair of contacts, the armature being latched in the second position by a shape memory alloy latch (14), wherein the shape memory alloy latch is caused to deform upon heating so as to permit the armature to return to the first position. |
164 |
Bi-stable microswitch including magnetic latch |
US09883220 |
2001-06-19 |
US20020036555A1 |
2002-03-28 |
Dinesh Kumar
Sood; Ronald Barry
Zmood; Lijiang
Qin |
A bi-stable microswitch (1) including a pair of contacts (4, 5) and an armature (10,11) movable between a first position and a second position to selectively break or make the pair of contacts, the armature being latched in the second position by a magnetic path including a permanent magnet (3) and a magnetisable element (7) having a first temperature, wherein the armature is resiliently biased towards the first position when latched, and is movable from the second position to the first position upon heating of the magnetisable element to above the first temperature. |
165 |
Method of arranging several relay functions and a multiple relay arrangement configured in accordance with the method |
US09051108 |
1998-04-09 |
US06249420B1 |
2001-06-19 |
Sture Roos |
A multiple relay arrangement comprises a common fixed part having permanent magnets, a common movable part having permanent magnets, and fixed coils having magnetically actuable movable cores connected to a respective contact means. To establish an electrical contact through the coupling means of the multiple relay arrangement, current is passed through the coil in one direction and through the remaining coils in the opposite direction. In the contact making state, the core will be repelled by the permanent magnet on the fixed part and attracted by the permanent magnet on the movable part. The coupling means connected to the core can then be used to connect together telecommunications conductors for instance. Remaining cores are attracted by the fixed permanent magnets and not moved, although the movable part will be moved away from the fixed part by virtue of the repulsion force acting between the cores and the magnets. |
166 |
Microminiature, monolithic, variable electrical signal processor and
apparatus including same |
US97824 |
1993-07-27 |
US5526172A |
1996-06-11 |
Brad Kanack |
A microminiature, variable electrical device, such as a capacitor (40a), comprises an elemental DMD SLM (40'), which includes a substrate (43) and a member (145) spaced therefrom and mounted for movement by appropriate facilities (42, 44). A control signal (102) is applied to the movable member (145) to produce an electric field between it and either the substrate (43) or an associated control electrode (46a). The field moves the member (145) toward or away from either the substrate (43) or an associated output electrode (46b) to selectively adjust the spacing therebetween. The field is produced by addressing circuitry (45) associated with the substrate (43). The movable member (145) and either the substrate (43) or the output electrode (46b) function as capacitor plates, and the spacing determines the capacitance thereof. The capacitor (40a) may be placed in series (FIG. 4) or in parallel (FIG. 3) with an input signal (114) applied to the movable member (145). The movable member (145), substrate (43), control electrode (46a), output electrode (46b), addressing circuitry (45), and other elements of the capacitor (40a) comprise a monolithic structure resulting from the use of MOS, CMOS or similar fabrication techniques. Multiple capacitors may be included in transmission lines (FIG. 20), antennae (FIG. 22), couplers (FIG. 21), waveguides FIG. 25) and other apparatus for digital or analog tuning or capacitance adjustment thereof by selective operation of the addressing circuitry (45). |
167 |
Switch actuator for a remote control unit |
US481791 |
1983-04-04 |
US4476449A |
1984-10-09 |
Ronald N. Gray; Ronald G. Davis |
An actuator for selectively actuating a circular array of electric switches. The actuator includes a molded plastic rotor part that contains particles of magnetic material. One portion of the rotor is magnetized to provide a permanent magnet that is effective to attract a switch actuating arm that is pivoted to the rotor. Another tubular portion of the rotor is magnetized to provide the rotor of an electric stepper motor. The stepper motor rotates the rotor to various positions. The arm can be attracted by an electromagnet and pivoted to a position in which it operates one of the circular array of switches. |
168 |
Remote control unit |
US289787 |
1981-08-03 |
US4403121A |
1983-09-06 |
Gerald O. Huntzinger; Raymond O. Butler, Jr.; Lewis R. Hetzler; John Delaplane |
A plurality of individual electrical load switches each having an operating tab are so mounted and oriented that the operating tabs extend toward a central axis to define a circle substantially normal to the central axis and operate substantially in the direction of the central axis. An operating arm having ends thereof arranged to be brought into register with each operating tab at mutually exclusive angular positions is normally tilt mounted in a first direction upon a rotor that may be positioned in selected ones of a plurality of angular positions by a step motor. Upon one end of the arm being brought into register with a switch operating tab, the arm is tilted in the opposite direction to effect the operation of the operating tab with which the one end thereof is in register to place the corresponding individual electrical load switch in a selected circuit condition. |
169 |
Electric circuit switchgear |
US015167 |
1979-02-26 |
US4281304A |
1981-07-28 |
Vitaly I. Koshman; Vladimir F. Petrichenko; Boris S. Gnilitsky; Vyacheslav G. Mironenko; Pavel V. Kamshitsky |
An electric circuit switchgear includes main contacts circumferentially arranged on a fixed panel and auxiliary contacts. The switchgear also includes a rotary electromechanical drive connected with a driving shaft and enabling the latter to be turned through a pre-set angle. The driving shaft is rotated together with an actuating element of an electromagnetic drive provided with a contactor and a disconnector both having at least one projection interacting with the main and auxiliary contacts through contact closing and disconnecting mechanisms having locks. |
170 |
Scanner with reed relays |
US26403872 |
1972-06-19 |
US3812439A |
1974-05-21 |
PARMENTER G |
Electrical switching apparatus such as a scanner comprises a plurality of reed relays, each of which has an operating coil, and at least one reed contact unit which is mounted outside the coil, to reduce thermal E.M.F. generation. The reed contact units are mounted on a first printed circuit board, and control respective analogue signals passing through the printed circuit tracks of this first board, while the coils are mounted on, and respectively energised via the printed circuit tracks of, a second printed circuit board parallel to the first board. In this way, interference between the scanned analogue signals and the relay energising signals is reduced.
|
171 |
Selector switching mechanism |
US3521205D |
1968-05-09 |
US3521205A |
1970-07-21 |
VACCARO ANGELO |
|
172 |
Code-bar controlled coordinated switch |
US42656965 |
1965-01-19 |
US3289127A |
1966-11-29 |
LOWRY TERRELL N |
|
173 |
Electromagnetic switch mechanism |
US5358560 |
1960-08-26 |
US3218410A |
1965-11-16 |
WALTER ROBER |
|
174 |
Electric selectors |
US61275356 |
1956-09-28 |
US3024402A |
1962-03-06 |
ADEL ALF F |
|
175 |
Switching device |
US35657753 |
1953-05-21 |
US2854541A |
1958-09-30 |
WALTER HOPPE |
|
176 |
Relay circuit |
US47552054 |
1954-12-15 |
US2841748A |
1958-07-01 |
REYNOLDS JR ANDREW C |
|
177 |
Relay circuit |
US46554254 |
1954-10-29 |
US2820157A |
1958-01-14 |
RIEKE JOHN W |
|
178 |
Selector switch |
US49988943 |
1943-08-25 |
US2391276A |
1945-12-18 |
SPRAGUE VINTON G |
|
179 |
Switching mechanism |
US42047741 |
1941-11-26 |
US2320254A |
1943-05-25 |
ATKINS GEORGE E |
|
180 |
Electric switch |
US30928439 |
1939-12-14 |
US2260901A |
1941-10-28 |
BERNARD HINKS |
|