Celebrity Inventors
Walt Disney was no Mickey Mouse inventor. He devised a serious animation camera which he patented. With the device, his company created "Snow White".
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 |
| 7194814 | Self-balancing, no-spin magnet compass A self-balancing, no-spin magnetic compass. A described embodiment includes a compass card assembly, a retainer assembly, a pivot assembly, a gimbal assembly, a cup, and a dome. The compass card assembly includes an air chamber which provides buoyancy. The retainer ... | 03/27/2007 |
| 7036235 | Vertical alignment device A vertical alignment device (10) between a downwardly extending upper spindle (12) on an upper mounting plate (14) of an upper pivot assembly (16) in a head jamb (18) and an upwardly extending lower spindle (20) on a lower m... | 05/02/2006 |
| 7000326 | Apparatus and method for maintaining wheel alignment sensor runout compensation A vehicle wheel alignment sensor unit is configured with an absolute rotational position sensor to provide an absolute rotational position of a mounting shaft relative to the vehicle wheel alignment sensor unit enabling resumption of operation and recall of stored r... | 02/21/2006 |
| 6994053 | Assembling structure of indicating needle for instrument and assembling method A assembling structure of an indicating needle for an instrument includes a case body having an upper case and a lower case (13), an indicating needle shaft (19) rotatably pivoted by the upper case and the lower case, and a top portion (19A) of ... | 02/07/2006 |
| 6708415 | Magnetic compass structure An Improvement to enhance the usability of magnetic compasses by eliminating acceleration and turning errors, especially in aviation applications, without compromising simplicity and reliability. The improvement includes the addition of a weightless mass to the bar ... | 03/23/2004 |
| 5469631 | Air bubble free compass and method of manufacturing same A method of preventing air bubbles in a compass equipped with fluid expansion capability, wherein a compass unit is assembled with a fluid expansion diaphragm; the compass unit is filled with fluid expanding the diaphragm, and sealed while maintaining the... | 11/28/1995 |
| 5469630 | Gimballed compass device A gimballed compass apparatus is disclosed which provides directional and inclinational data. The apparatus comprises a rotatably mounted slotted disk wherein the slot is continuously varying in width around the circumference of the disk. The disk incorpo... | 11/28/1995 |
| 5452519 | Attitude sensor An attitude sensor comprises a spherical ball suspended in a fluid contained in a housing. The ball is maintained neutrally buoyant with respect to the fluid and out of direct contact with the housing. A means is provided for detecting the orientation of ... | 09/26/1995 |
| 5282318 | Position sensor A position sensor has a ring of a material of high permeability that is floated on a liquid within a hermetically sealed toroid, so as to hold the ring in a horizontal position. Exciting coils are distributed uniformly about the ring to enclose the cross ... | 02/01/1994 |
| 5233759 | Compensating magnetic compass A tilt-compensating magnetic compass formed by a capsule enclosing a rotatable pointer to indicate direction and a rotatable magnetic-field detector provided with a permanent magnet. The detector, which is rotatable about an axis colinear with the axis ab... | 08/10/1993 |
| 4912662 | Inclinometer An inclinometer 20 has a sensing unit 40 for providing a varying capacitance signal depending on the orientation of the inclinometer 20. An oscillator circuit unit 82 includes the sensor unit 40 as a capacitive element for providing a signal having a peri... | 03/27/1990 |
| 4866850 | Clinometer with rolling liquid conductor A clinometer includes a cylindrical cavity having a conductive cylindrical wall and a vertical annular wall having a high resistance resistor uniformly distributed thereon. A freely moving, heavy conductive ball, which may be solid or liquid such as mercu... | 09/19/1989 |
| 4747216 | Clinometer/accelerometer and method A clinometer includes a cyclindrical cavity having a conductive cylindrical wall and a vertical annular wall having a high resistance resistor uniformly distributed thereon. A freely moving, heavy conductive ball seeks the lowest point in the cavity. The ... | 05/31/1988 |
| 4694584 | Reduced volume digital inclinometer A high resolution, digital inclinometer having a full 360° linear range with accuracy which is independent of the angle of inclination. The linearity of the inclinometer is essentially flat throughout its range and greatly exceeds analog equivalents. A m... | 09/22/1987 |
| 4614041 | Magnetic angular position sensor A magnetic angular position sensor having a ferrofluid filled spherical chamber in a cylindrical housing, within which floats a body comprising a buoyant core carrying a magnet which aligns itself and the body with the earth's magnetic field, and carrying... | 09/30/1986 |
| 4606133 | High resolution digital inclinometer An inclinometer for producing high resolution signals of inclination relative to various references and which is capable of displaying inclination angles in various modes. High resolution data signals are produced through the use of a digital encoding whe... | 08/19/1986 |
| 4597475 | Universally movable suspension member The invention relates to a universally movable suspension member for a direction indicating display system, especially for a gyro system (2), in which a bellows unit (1) is provided between a revolving disk (3) and the gyro system (2). The suspension memb... | 07/01/1986 |
| 4517749 | Stable plumb beam optical projector A viscous dampened sensitive pendulum carries a generally upwardly directed light source for indicating the gravity vertical. The sensitive pendulum is carried for two degrees of pivotal freedom by flexural pivots which are biased for operation at an erro... | 05/21/1985 |
| 4471534 | Remote reading compass with 360 degree roll capability A cylindrical compass gimballing and data readout system permitting 360° rotation about both yaw and roll axes includes a cylindrical compass housing flooded with semiconductive fluid to permit transmission of a digitally multiplexed signal from a remote... | 09/18/1984 |
| 4453317 | Magnetic compass A magnetic compass including a flexible bowl having a rim with an annular inwardly facing groove. The inwardly facing groove is adapted to engage a flange of a transparent cover in a tight sealing relationship, the combined assembly enclosing a compass ro... | 06/12/1984 |
| 4451991 | Vertical indicating method and device A vertical indicating device is comprised of a compound pendulum immersed in a liquid and one or more paddles attached to the pendulum to couple its motion to the liquid. The effective length of the equivalent pendulum is much longer than the physical dim... | 06/05/1984 |
| 4375726 | Gyro compass In this gyro compass the direction-indicating gyro system is suspended pivotably in all directions from a pendulum, which is mounted to rotate about a vertical axis in a frame integral with a ship, and which has on its upper end an element that extends in... | 03/08/1983 |
| 4250627 | Compass apparatus Compass apparatus includes a housing defining a liquid-filled sealed interior space and a compass card member disposed within the liquid-filled space for rotation therein. The housing comprises an upper transparent cover portion having an outwardly direct... | 02/17/1981 |
| 4222278 | Gyro apparatus using viscous damping device A viscous damping device positioned between a gimbal shaft and a bearing sleeve supporting the gimbal shaft is provided for damping a gyro apparatus in a rotational direction. The viscous damping device comprises first and second rings fixed to an outer p... | 09/16/1980 |
| 4163325 | Verticality sensors A verticality sensor comprises a casing within which is mounted a rotary pick-off device having a body attached to the casing and mounted on a shaft for relative rotational movement with respect thereto, such movement producing an output signal from the p... | 08/07/1979 |
| 4099334 | Dip angle data transmitter A dip angle data transmitter wherein a laminated pendulum, housed in a viscous fluid completely filling a casing, is arranged in the latter so that the distance between the surfaces of the pendulum's plates and the inner surface of the casing is found fro... | 07/11/1978 |
| 4091542 | Measuring apparatus for determining the position of the roller apron of a continuous casting installation A measuring apparatus for determining the position of a roller apron of a continuous casting installation comprising at least one partially curved roller apron, wherein calibrated plumb bobs or lines can be applied to coordinate-measuring points of the ro... | 05/30/1978 |
| 4063366 | Grade level A grade level comprising a hollow, fluid-tight cylindrical housing having its central axis normally disposed in a horizontal attitude. The housing comprises an annular wall portion and spaced-apart end members mounted on opposite sides thereof. A horizont... | 12/20/1977 |
| 3983636 | Hydraulic fluidic level control system A hydraulic fluidic level sensor for detecting an angular deviation from vity vertical comprising an inverted pendulum in conjunction with two fluidic proximity sensors to provide an output signal proportional to the angular deviation. Opposing fluid jet... | 10/05/1976 |
