Bizarre Patents
Pillow with retractable umbrella
A pillow assembly having a supporting assembly and a retractable umbrella assembly that is easily transportable and allows a user to support his/her head while covering their face from sunlight.
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 |
| 7180248 | Inductively coupled ballast circuit A ballast circuit is disclosed for inductively providing power to a load. The ballast circuit includes an oscillator, a driver, a switching circuit, a resonant tank circuit and a current sensing circuit. The current sensing circuit provides a current feedback signal... | 02/20/2007 |
| 7153178 | Method of manufacturing a lamp assembly A lamp assembly configured to inductively receive power from a primary coil. The lamp assembly includes a lamp circuit including a secondary and a lamp connected in series. In a first aspect, the lamp circuit includes a capacitor connected in series with the lamp an... | 12/26/2006 |
| 7139621 | Floating deadband control A control system having a floating deadband control includes an input device moveable from a first position to a second position. In addition, the control system includes a controller configured to automatically generate a first electronically defined deadband about... | 11/21/2006 |
| 7115834 | Method and apparatus of electronic selection of an output mode of a welding power source The present invention provides a method and apparatus of electronically selecting an output mode of a welding power source. The invention includes operational circuitry that electronically energizes an output terminal based on a user selected parameter. Specifically... | 10/03/2006 |
| 7018002 | Motor vehicle master cylinder with device for detecting actuation of a braking system The invention proposes a master cylinder 1 with a device for detecting actuation of a braking system. The detection device is fixed to a body 2 of the master cylinder 1 at a pressure chamber 5. The detection device comprises a magnetic ci... | 03/28/2006 |
| 6957351 | Automated disk drive library with removable media powered via contactless coupling An automated disk drive library has a rack with drawers that are interconnected with a host computer. A drive carrier having a disk drive is mounted in each drawer. The drive carrier has a front bezel that senses whether the disk drive is latched within the drawer a... | 10/18/2005 |
| 6931304 | Scalable means of supplying power to a remotely controlled, semi-autonomous robot An automated library system having multiple storage cells for storing multiple data cartridges. Rails are provided adjacent to the storage cells to guide one or more robots among the storage cells. Primary coils are disposed proximate the rails. A power supply produ... | 08/16/2005 |
| 6917163 | Inductively powered lamp assembly A lamp assembly configured to inductively receive power from a primary coil. The inductively powered lamp assembly includes a lamp circuit including a secondary and a lamp connected in series. In a first aspect, the lamp circuit includes a capacitor connected in ser... | 07/12/2005 |
| 6343022 | Semiconductor integrated circuit device for non-contact type IC card A semiconductor integrated circuit device for a non-contact type IC card equipped with a rectifying circuit rectifying a received signal and thus producing a power supply voltage is disclosed. A shunt regulator is connected between a power supply voltage ... | 01/29/2002 |
| 6177790 | System and method for distributing power between components via a magnetic coupling A redundant array of independent disk drives (RAID) is coupled to a backplane for interfacing with a computer. Each drive in the array is mounted in a carrier. The backplane has a main power circuit and each carrier has a power conditioning and distributi... | 01/23/2001 |
| 5327030 | Decoder and monolithic integrated circuit incorporating same A monolithic interface circuit for use with a linear variable differential transformer (LVDT) position transducer. The interface circuit includes a drive circuit for providing an excitation signal of selectable frequency and amplitude to the LVDT primary ... | 07/05/1994 |
| 5122729 | Power supply device including induction voltage detection coil for charging portable electronic devices A power supply device has a primary coil, a detection coil and a controller. The detection coil detects and outputs as a change in induction voltage any load fluctuation resulting from change in distance between the primary coil and a secondary coil. The ... | 06/16/1992 |
| 4924171 | System for supplying power source by electromagnetic induction coupling Between two units which are separately arranged, a power source signal is supplied from one of the two units to the other unit via electromagnetic induction coupling by using induction coils, and data signals are mutually transmitted and received between ... | 05/08/1990 |
| 4904921 | Monolithic interface circuit for linear variable differential transformers A monlithic interface circuit for use with a linear variable differential transformer (LVDT) position transducer. The interface circuit includes a drive circuit for providing an excitation signal of selectable frequency and amplitude to the LVDT primary w... | 02/27/1990 |
| 4857824 | Movable core position transducer A two-wire linear transducer comprised of a high permeability finite length core that is positioned with respect to a continuously wound variable pitch coil. The cores is displaced from the initial stroke position at one end of the coil to the opposite en... | 08/15/1989 |
| 4847548 | Signal conditioner for a linear variable differential transformer A signal conditioner for a linear variable differential transformer having a first amplifier which senses the differences in amplitude between secondary alternating current voltages in the two secondaries respectively, and a second amplifier which compare... | 07/11/1989 |
| 4692681 | Battery charger with adjustable charging current A battery charger comprises a self-oscillating inverter with saturable transformer means in its positive feedback circuit. The saturation flux density of the magnetic material used in this saturable transformer means determines the frequency of inverter o... | 09/08/1987 |
| 4629974 | Active current transformer A current transformer equipped with a primary winding (1), a secondary winding (2), as well as a detector winding (3), has a rigid coupling between the secondary winding (2) and the detector winding (3). The coupling factor between these windings (2, 3) a... | 12/16/1986 |
| 4507601 | Lever stroke control A manual controller for producing an output signal for control of hydraulic valves and the like. The controller has a quadrant lever consisting of an inner tube connected to a shaft and an outer tube slidable thereover. The inner tube has a palm rest at i... | 03/26/1985 |
| 4453124 | Linear inductive transducers A linear inductive transducer includes a non-magnetic former which has a bore in which is slidable a core formed from magnetic material. The core in use is moved axially within the former by the component whose axial position it is required to sense. The ... | 06/05/1984 |
| 4417200 | Current control A method and a device which are dependently and cojointly employed in the accurate control of the increase and decrease of alternating current, direct current, and concomitant electrical current extending through circuitry and passing to and through elect... | 11/22/1983 |
| 4282485 | Linear variable phase transformer with constant magnitude output A linear variable phase transformer position to phase transducer produces a linear phase change in an output signal with respect to displacement. Moreover, the magnitude of such output signal remains relatively constant while such displacement occurs. The... | 08/04/1981 |
| 4217541 | Method of accurate control of current and power of a magnetic current and power control device A method and a device which are dependently and cojointly employed in the accurate control of the increase and decrease of alternating current, direct current, and concomitant electrical current extending through circuitry and passing to and through elect... | 08/12/1980 |
| 4167719 | Variable ratio transformer An adjustable output transformer using a pair of adjacent facing pot cores, the first of which carries both primary and secondary windings, the second having only a shorted winding around one leg. The shorted winding inhibits flux through its leg and the ... | 09/11/1979 |
| 4156192 | Inductive displacement transducer using plural magnetic screens rotatable about different axis to modify an inductance proportional to the displacement An inductive transducer intended, according to the invention, for converting the displacement of mechanical objects into an electric signal, comprising primary and secondary coils with cores, connected to one of mutually moving mechanical objects. The coi... | 05/22/1979 |
