Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
PatentStorm News
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 |
| 6696915 | Knob combined a rheostat and a pushbutton A knob having a button for a rheostat includes a base, at least one arcuate contacts, a hub, a pushbutton cap with a conductive arc corresponding to the arcuate contacts and a biasing member mounted in the pushbutton cap. The biasing member can be mounted... | 02/24/2004 |
| 5838222 | Multiturn potentiometer An improved multiturn potentiometer consists of a rotor assembly including a wiper in electrical contact with an output terminal and an annular resistance strip. The annular resistance strip is electrically connected to a source of potential through one o... | 11/17/1998 |
| 5745025 | Snap-engaging apparatus for a rotable component A snap-engaging apparatus for use in a rotatable electrical component, particularly a rotatable switch or a rotatable resistor, makes it easier to find operational positions. The snap-engaging apparatus includes a rotor (3) which is formed as a hollow bod... | 04/28/1998 |
| 5525955 | Capacitor coupled potentiometer An annular resistor member having two non-contact ends is overlaid and adhered on the surface of a base, and a rotational shaft located at the central portion of the resistor member is pivotally axially supported via a bearing. A bent electrode arm is fit... | 06/11/1996 |
| 5453728 | Rheostatic device in a switching arrangement for electric tools An electric tool rheostatic device in a switching arrangement is provided for regulating the speed of an electric motor in an electric tool. A circuit board for receiving electronic components is disposed in a switch housing. A potentiometer disposed with... | 09/26/1995 |
| 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 |
| 5264821 | Rotary, push-pull headlight switch with ceramic coated metal substrate rheostat and cam actuated dome light bypass switch A rotary, push-pull switch (20) for use in an automobile has a rotating ceramic coated metal substrate rheostat (48) and a supplemental switch (52) which opens and closes a dome light bypass circuit. The supplemental switch (52) is mounted internally to t... | 11/23/1993 |
| 5155465 | Variable resistor with a switching mechanism A variable resistor with a switching function includes arcuate resistive layers and arcuate electrodes arranged alternately on a base plate. A protective layer is formed on the base plate adjacent to a first electrode and between the arcuate resistive lay... | 10/13/1992 |
| 4716518 | Incremental control An endstopless incremental control provided by parallely connecting and ganging at least two potentiometer wipers without mechanical endstops, selectively switching, converting and sampling the individual output on the potentiometer wipers and utilizing o... | 12/29/1987 |
| 4651123 | Linear potentiometer A linear potentiometer with a sandwich type construction. A pair of conductive strips are carried on a pair of non-conductive flexible plastic substrates which are affixed to a spacer to form a sealed unit. Each substrate includes a pair of tabs which coo... | 03/17/1987 |
| 3949347 | Switching potentiometer control unit A control unit, for example, a light dimming unit for controlling the intensity of brightness of a lamp load connected in series with the unit, includes a switching potentiometer for serially connecting the unit between a supply line and the load and for ... | 04/06/1976 |
