Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7015787 | Voltage-dependent resistor and method of manufacturing the same A voltage-dependent resistor includes a composite of at least one semiconductive ceramic layer mainly containing ZnO and at least one metal oxide layer containing at least one of strontium and barium, at least one of manganese and cobalt, and at least one rare earth... | 03/21/2006 |
| 6956280 | Integrated circuit apparatus and neuro element Input signals are weighted by weighting means composed of variable resistors, each made of an oxide thin film with a perovskite structure containing manganese, which changes resistance at room temperature according to the cumulative number of times a pulse voltage w... | 10/18/2005 |
| 6396386 | Angle sensor which makes it possible to prevent rattling caused by backlash between gears inside the angle sensor An angle sensor in which, when a biasing member is used, a biasing force in the 댢 direction acts on a driving gear, and a biasing force in the 댡 direction acts on an auxiliary gear. This prevents backlash from occurring between a rotary memb... | 05/28/2002 |
| 6275139 | Multidirectional input device In a multidirectional input device, a surface of a bottom plate facing the bottom of an operating member is provided with a projection having a taper portion that gradually rises from the outer periphery toward the center, wherein the operating member is ... | 08/14/2001 |
| 6239688 | Variable resistor in which an electrode connected to a resistor can not be required There is provided a variable resistor comprised of a resistor formed at a movable member arranged to be reciprocatable, and a slider element attached to a fixing member fixed in opposition to the movable member, slidingly contacted with the resistor. The ... | 05/29/2001 |
| 5296835 | Variable resistor and neuro device using the variable resistor for weighting A Neuro device is a representation of a nerve cell constituting human brains, eyes and the like, that is, a neuron by an electronic circuit. A circuit of the Neuro device according to the present invention comprises n (n : natural number) input terminals ... | 03/22/1994 |
| 5113172 | Angle of rotation potentiometer A potentiometer for the redundant measurement of the angle of rotation of a shaft compared with a fixed member has two resistance paths located concentrically with each other on a fixed disk. Two collector paths having the shape of circular rings are loca... | 05/12/1992 |
| 4866413 | Potentiometer and method of making the same The potentiometer consists of two halves. Each half has a base plate (5,6) ending in soldering lugs (51,61,62). One part each of a casing (1 or 2) and a rotary driver half (3 or 4, respectively) are molded to each base plate in a plastics injection moldin... | 09/12/1989 |
| 4668933 | Servo control mechanism An error detection device which includes two coaxial connected shafts. A flexible seal is disposed about one shaft to secure the shaft within a bore of the second shaft to insure accurate correlative movements of the shafts.... | 05/26/1987 |
| 4511879 | Slider arrangement and method of producing of the same A slider arrangement comprises an insulator member, and two sliders each made of a resilient metal matel plate embedded in the insulator member and each having slender contacts exposed from the insulator mold member. The slender contacts of each of the sl... | 04/16/1985 |
| 4476415 | Feedback transducer A transducer for generating a feedback signal representative of the position of a movable member includes a signal generating mechanism for providing an electrical feedback signal representative of the position of the movable member. The signal generating... | 10/09/1984 |
| 4109230 | Compact electrical control A compact electrical control, such as a potentiometer, a rheostat, or a switch includes a housing and a shaft rotatably mounted within the housing. The housing has a cavity for receiving a resilient annular seal surrounding the shaft, and the shaft is pro... | 08/22/1978 |
| 4105987 | Potentiometers A potentiometer comprises a housing one end of which is closed by an insulating board which carries associated resistive and highly conductive areas or tracks arranged to be bridged by a metallic wiper loosely fitted to a wiper carrier part of an actuator... | 08/08/1978 |
| 4081781 | Strip potentiometer An elongated tape fabricated of an electrically insulative material has a pair of strips which run therealong, these two strips being joined together at one end thereof but not at the other, to form an open loop. The strips are fabricated of an electrical... | 03/28/1978 |
| 4010439 | Planetary potentiometer assembly Multiple resistance elements are mounted in parallel pairs around the inside curved wall of the assembly housing. Multiple cylindrical contacts in a planetary arrangement are rotated by a friction drive surface mounted on the control shaft. Each cylindric... | 03/01/1977 |
| 3935555 | Assembly for fine adjustment of a variable impedance mechanism An assembly for fine adjustment of a variable impedance mechanism is disclosed wherein a first disk-shaped rotary member, which functions as a knob, has a spiral ridge or groove formed on one side surface thereof for engagement with the teeth of a second ... | 01/27/1976 |
