Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 6466200 | Computer input device A computer input device used to input coordinates and three-dimensional graphical information into a computer. The device includes an acceleration sensor that has a fixed volume vessel containing a magnetic fluid. A non-magnetic inertial body is located i... | 10/15/2002 |
| 6417636 | Power window device In a power window device, a DOWN switch has first and second switches in a power window circuit located in a door for a window of a passenger's seat. A normally-closed contact of the first switch and a remote UP terminal of the power window circuit to whi... | 07/09/2002 |
| 5969624 | Battery charge control system for a hybrid vehicle driven by an electric motor and an internal combustion engine A hybrid vehicle comprises a motor driving the vehicle's wheels, multiple batteries supplying electric power to the motor, and a generator driven by an internal combustion engine to generate electric power for charging the batteries. Battery sensors detec... | 10/19/1999 |
| 5955878 | Circuit for multiplying resolution and for determining the direction of displacement A multipole magnetic encoder is movable past two fixed analog sensors delivering sinusoidal signals (S1, S2) phase-shifted by π/2. A generator produces 2n sinusoidal signals (Si) of the same amplitude (A) as the signals (... | 09/21/1999 |
| 5952739 | Remotely operated meter disconnect switch Multiple pairs of stationary and moveable contacts are toggled simultaneously between an open and closed position to disconnect or connect a meter from or to a line power source, by a reciprocating operator driven by low power clock motor. The operator is... | 09/14/1999 |
| 5946274 | Switch device and electronic device which includes such switch device When an inclination switch SW3 is turned on by inclining a wristwatch 12 up at 12 o'clock within a predetermined time after an acceleration switch SW2 is turned on in a state where an auto mode on/off subswitch SW1-1 is on, a lighting circuit lights up an... | 08/31/1999 |
| 5486759 | Device for detecting the movement of a movable component and signalling the detected movement over a single line A device for detecting the movement of a movable component in that the position signals furnished by two position sensors are added to form a signal that is conducted through a line to an evaluation arrangement. The position ranges associated with the pos... | 01/23/1996 |
| 5208486 | Switching mechanism for making and breaking an electrical circuit A switch for connecting a load to a power source has a first rotatable ratchet wheel which meshes with a unidrectionally rotatable second ratchet wheel, which meshes with mating teeth on an interior-facing surface face of a stationary ratchet face. The ra... | 05/04/1993 |
| 5180925 | Remote switching system for an electric trolling motor A remote switching system for an electric trolling motor mounted to a boat includes at least one remote switching station secured to the boat and provided with a foot operated push-button switch actuator, the actuator configured for actuating the switch e... | 01/19/1993 |
| 5132665 | Hub-mounted vehicle back-up alarm A self-powered back-up alarm for mounting to the wheel hub of a heavy truck or like vehicle. The alarm includes a housing adapted to be mounted to a vehicle wheel hub. Inside the housing is a magnetized stator that is held stable by a counterweight mounte... | 07/21/1992 |
| 5028808 | Devices capable of sensing rotary motion A rotation-sensing device for providing output signals that correspond to rotary hand movement made about the device by an operator is disclosed. The device comprises a cover member including an outer surface having a generally cylindrical, longitudinally... | 07/02/1991 |
| 4940903 | Motor controlled switch mechanism A motor and manual actuated switch includes a motor control circuit for controlling the motor to rotate in either a clockwise or counterclockwise direction to actuate a mechanical switch between the open circuit and short circuit states. The control circu... | 07/10/1990 |
| 4789791 | Rotary drive mechanism A rotary drive mechanism has a yoke mounted on a motor shaft which engages a crank connected to a device to be rotated, such as the rotary portion of a microwave switch. When the gear motor is activated, the yoke causes the crank to move from a first posi... | 12/06/1988 |
| 4774443 | Driving mechanism for a switch A driving mechanism, preferably provided for a high-voltage isolating switch (T), contains a driving motor (M) which acts upon a moving contact of the switch via a shaft (W) and is provided with a rotor winding (R) and a stator winding (S), connected in s... | 09/27/1988 |
| 4727263 | Electromotive setting device In an electromotive control device having an end disconnect switch, two circular conductive paths are arranged on an insulating support, at least one of said paths being less than an entire circle. Wiper contacts which connect the conductive paths are ele... | 02/23/1988 |
| 4418288 | Rotation detector A rotation detector wherein a rotary disk formed with slits in the circumferential direction thereof at predetermined regular intervals and connected to a driving source is disposed between a light emitting element and a light receiving element, and the l... | 11/29/1983 |
| 4142152 | Sensing arrangements This disclosure relates to a directional sensing arrangement including a rotatable member having a plurality of permanent magnets which magnetically influence a first and second spaced stationary sensor. The rotation of the member causes the magnets to se... | 02/27/1979 |
