...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 6078247 | Multi-direction input device In conventional multi-direction input devices, the operating shaft is formed as a cylinder by machining using a lathe or the like, so that the machining takes a lot of time, resulting in a rather high cost. Disclosed is a multi-direction input device in which ... | 06/20/2000 |
| 5963124 | Cover mounted position sensor A position sensor for sensing the position of an attached device. There is a housing having terminals and a cover attached to the housing. Resistors, conductors and conductive traces are located on the cover and electrically connected to the terminals. A ... | 10/05/1999 |
| 5952912 | Electrical rotary potentiometer Rotary potentiometers known in the art having sensitive adjustment of the control knob require a stepdown gearing and have differing moments of friction that vary between devices. By contrast, in a rotary potentiometer of this invention a control knob (3)... | 09/14/1999 |
| 5781100 | Resistor substrate containing carbon fibers and having a smooth surface A resistor substrate in which a resistor layer having an electroconductive powder and carbon fibers dispersed in a heat resistant resin is molded into a substrate comprising a heat resistant thermosetting molding material, and the surface of the resistor ... | 07/14/1998 |
| 5673015 | Sliding type variable resistor The present invention provides a sliding type variable resistor in which the shaking of a knob portion is prevented, and in which the slider is able to slide smoothly. A sliding type variable resistor is provided having a structure comprising a resin subs... | 09/30/1997 |
| 4977387 | Adjusting potentiometer for electronic circuits, process for assembling the elements thereof and process for obtaining the resistive plate thereof A potentiometer has a parallelepiped casing provided with recesses for fitting connecting terminals which are secured to the casing by plastically deformed studs projecting outward from the casing. Slots are formed in the casing so that the ends of the te... | 12/11/1990 |
| 4774490 | Rotary Electric devices In a rotary electric device such as a trimmer capacitor or a variable resistor comprising a rotor contained in a case which is provided with an opening for receiving a screwdriver for rotating the rotor from the outside with a clearance being defined betw... | 09/27/1988 |
| 4734672 | Variable resistor circuit module and method of manufacture A variable resistor circuit module in which a printed substrate having sliding resistor patterns for variable resistor formed by printing a thick organic film and a copper foil printed substrate for mounting electronic parts are prepared separately and la... | 03/29/1988 |
| 4426634 | Variable resistance device A variable resistance device wherein a slide member is disposed slidably within an elongated case, resistance and collector elements are disposed on an insulating substrate, and a contactor attached to the slide member rides over the resistance and collec... | 01/17/1984 |
| 4404540 | Slide rheostat A slide rheostat wherein a movable insulating plate and a leaf spring which are centrally provided with holes for receiving a lever of a slide piece receiver are made unitary by mounting a flat portion of the leaf spring on the movable insulating plate by... | 09/13/1983 |
| 4369424 | Slide rheostat A slide rheostat comprising a metal case whose lower surface is open and which is formed with a longitudinal slot in its upper surface portion, an insulating frame which includes an upper surface portion sufficiently larger in width and length than the sl... | 01/18/1983 |
| 4274074 | Slide type variable resistor having dual tracks Disclosed is a variable resistor of the slide type incorporating a pair of resistor units carried on the same base plate and disposed in parallel with respect to each other. A plurality of conductive taps angle outwardly from a resistance member provided ... | 06/16/1981 |
| 4200780 | Control assembly with rotating disc cover for sliding control An electronic amusement game incorporating manually operated control circuit devices. A control panel in the game housing is formed with slots through which operating handles of the devices project. A circular protective cover is rotatably mounted between... | 04/29/1980 |
| 3996550 | Slidable variable resistor of electric shock prevention type A slidable avriable resistor to be used in television receiver and in stereophonic set comprises a lower case member of an insulating material having a resistor member and a conductor on it disposed in lengthwise direction, a upper metallic cover having a... | 12/07/1976 |