"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7042329 | Rotatable variable resistor with clicking mechanism A rotatable variable resistor with a clicking mechanism includes a rotary unit provided with a rotor and a wiper, and a fixed unit provided with a cover, a resistor substrate, and external terminals. The wiper has an arm segment, a clicking projection and a non-clic... | 05/09/2006 |
| 6833531 | Temperature adjusting device for a soldering iron Disclosed is a temperature adjusting device for adjusting or setting temperature of a soldering iron, with the adjustment or setting being allowed to a particular authorized operator. The device comprises a temperature control section having a moveable member... | 12/21/2004 |
| 6476707 | Potentiometric position sensors By using a two-part assembly of a rotary member (10) bearing one or more wipers (14) clipped on to a substrate member (1) bearing one or more tracks (3), subassemblies may be supplied which can be used by manufacturers of articles (20,21,22) in which it i... | 11/05/2002 |
| 6445278 | Rotary sensor capable of detecting rotation angle of shaft to be detected with high accuracy In a rotary sensor of this invention, an angle detection member is composed of sliding pieces having contact portions on a rotation body side and a conductive pattern formed on a substrate arranged on a side opposite to the sliding pieces, the operation s... | 09/03/2002 |
| 6380841 | Variable resistor A variable resistor is constructed to reliably seal the space between a rotor and a substrate without insert-molding the substrate into a case, and to be produced at a very low cost. This variable resistor includes a hollow square-prism shaped case which ... | 04/30/2002 |
| 6317022 | Variable resistor A variable resistor is constructed to prevent bending strain from spreading to the conductive portions to a resistor when bending is executed with respect to the external connection portions of metallic terminals. The variable resistor provides a low-prof... | 11/13/2001 |
| 6111493 | Variable resistor A variable resistor comprises a case, slide contactors, a rotor, a metal cover and lead terminals. Arms which are respectively provided at central portions of the slide contactors protrude from a bottom surface of a recess portion of the case and are each... | 08/29/2000 |
| 6040757 | Variable resistor Slack in the engagement of a shaft 5 and a rotor 3 in a case 1 is prevented by the resiliency of an O ring 6 under radial but not axial compression. Even if heat stress is added, the variable resistor which can secure air-tightness is provided. The rotor ... | 03/21/2000 |
| 5754301 | Potentiometer The potentiometer has a housing in which a carrier plate which supports a resistance strip is disposed. A rotary pin is supported on the housing and has a sliding contact connected to the rotary pin for engaging the resistance strip. The carrier plate is ... | 05/19/1998 |
| 5575235 | Electronic illumination apparatus The present invention relates to an electronic illumination apparatus which may be used in audio equipment. The electronic illumination apparatus allows recognition of the position of rotational operation of a knob by the light from a built-in light emitt... | 11/19/1996 |
| 5539373 | Rotor structure for a position sensor A rotor for use in a rotary position sensor includes an opening designed to receive a shaft having a flat. The rotor has a wedge within the opening designed to engage the shaft firmly but minimize insertion forces. Several troughs running parallel to the ... | 07/23/1996 |
| 5469125 | Rotary electronic device A rotary electronic device of a neutral position return type having an output that is controlled in a stepless mode. A rotary variable resistor of the rotary electronic device is installed on a tubular holder, and a torsion coil spring is disposed between... | 11/21/1995 |
| 5305418 | Water heater tank arrangement control device and shaft extension therefor and methods of making the same A water heater tank arrangement, control device and shaft extension therefor and methods of making the same are provided, the water heater tank arrangement comprising a water heater tank having a heating unit therefor, a control device carried by the tank... | 04/19/1994 |
| 5291177 | Variable resistor A variable resistor includes a case inside which a rotatable member with a resistive element mounted thereon is disposed with a separate rotatable shaft running through a hole formed thereon, a stationary member with external leads attached thereon overla... | 03/01/1994 |
| 5159658 | Water heater tank arrangement, control device and shaft extension therefor and methods of making the same A water heater tank arrangement, control device and shaft extension and the methods of making the same are provided, the water heater tank arrangement comprising a water heater tank having a heating unit, a control device carried by the tank and having an... | 10/27/1992 |
| 5144276 | Rotary potentiometer A potentiometer includes a rotatably mounted lever which acts as a follower member adapted to lie in contact with a moveable finger, the movement of which the lever is to follow, the lever being biassed at all times towards the finger by resilient return ... | 09/01/1992 |
| 4739300 | Rotary type electronic part A rotary type electronic device has a stationary casing and an axially slidable and angularly rotatable shaft disposed in the casing. The end of the shaft is assembled to the end face of a detentable (heart-shaped) cam so that the shaft can be pushed axia... | 04/19/1988 |
| 4652850 | Potentiometer A potentiometer which can be used for measurement of angles includes an enclosure made of insulating material. The enclosure has a positioning portion comprising a pair of grooves to guide a resistance base plate into the enclosure. The enclosure is provi... | 03/24/1987 |
| 4523175 | Dual shaft rotary electric device A dual shaft rotary electric device comprises inner and outer concentric shafts, slider supports attached to the inner and outer shafts respectively, sliders attached to the slider supports respectively, and insulating substrates stacked in the longitudin... | 06/11/1985 |
| 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 |
| 4114131 | Variable resistor A variable resistor for use in electrical and electronic equipment which includes a base plate, a lower stator terminal housed in a circular recess formed in one surface of the base plate, a rotor member having an electrically conductive film layer at its... | 09/12/1978 |
| 4044327 | Trimming potentiometers with coarse and fine adjustment means A trimming potentiometer having a resistive member and a rotatable member attached to a wiper in contact with the resistive member for varying the position of the wiper thereon, wherein the rotatable member has a peripherally toothed portion and the non-r... | 08/23/1977 |
| 3964011 | Single turn variable resistance device having a split shaft rotor A single turn potentiometer is constructed as either an open frame or a housed unit. Both units incorporate a helical coil spring wiper mounted within a rotor. In the open-frame unit, the rotor includes a shaft which extends through a corresponding hole o... | 06/15/1976 |
| 3955449 | Adjustment tool for rotatable instrumentalities An adjustment tool for a rotatable preset potentiometer used in television receivers, or the like, is formed of one-piece, molded plastic material and is insertable into the hollow rotatable hub of the potentiometer. The tool has a shaft which extends int... | 05/11/1976 |
| 3932832 | Plug-in shaft for electrical control A plug-in shaft is provided for insertion into a noncircular opening provided in a driver and integral hub of a variable resistance control providing a means to alter the rotational torque of the control. Integral with the hub is a dish shaped abuttment s... | 01/13/1976 |