Bizarre Patents
A kissing shield comprised of a thin, flexible membrane and a frame or holder.
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 |
| 4413892 | Magnetostrictive position sensing device and photographic apparatus incorporating such device Position sensing mechanism, particularly for photographic apparatus controlled by a digital computer, includes a magnetostrictive position sensing device for supplying information on the positions of movable parts of the apparatus to the computer. The mag... | 11/08/1983 |
| 4406999 | Inductive sensor A sensor which conveys a displacement of an object into a change of inductance with which associated circuitry can be used for monitoring the displacement of the object. The sensor includes a coil maintained about a housing in which is disposed a ferromag... | 09/27/1983 |
| 4401986 | Position sensor and system A non-contacting position sensor has an exciting coil disposed in a plane and has a sensing coil located in an intersecting plane so that portions of the sensing coil are disposed symmetrically around a portion of the exciting coil in mutually inductive r... | 08/30/1983 |
| 4395711 | Inductive sensor A sensor which conveys a displacement of an object into a change of inductance with which associated circuitry can be used for monitoring the displacement of the object. The sensor includes a coil maintained about a housing in which is disposed a ferromag... | 07/26/1983 |
| 4392693 | Redundant active electromagnetic bearing The present invention relates to an active electromagnetic bearing comprising first and second sets of electromagnet coils, the two sets of coils being so placed on one armature that on each double-pole part of armature are wound one coil of the first set... | 07/12/1983 |
| 4382230 | Movement sensor with plate forming single turn coils A magneto-electric sensor for sensing the movement of a moving part in a severe environment, comprising a magnetic circuit, in front of the pole faces of which moves a permanent magnet connected to the mobile part, and electric windings at the terminals o... | 05/03/1983 |
| 4359657 | Rotation speed signal detector A rotation speed signal detector comprising a cylindrical rotor magnet having n rotor magnet poles provided along the inner circumference and m[m>n] rotation speed detection magnet poles provided along the outer circumference; a stator winding; a rotation... | 11/16/1982 |
| 4341257 | Arrangement for locating rollers with an increased rotatory resistance in a roller way In order to be able to locate stuck rollers of a roller way as early as possible, with longer operational interruptions being avoided and the demounting of constructional parts of the roller way being not necessary, an arrangement for this purpose include... | 07/27/1982 |
| 4314202 | Flexural vibration sensor with magnetic field generating and sensing A flexural vibration sensor including a housing fabricated from a magnetizable material for providing an internal magnetic path and having a coupling surface for contact with an associated structural member; electrically conductive coil means positioned w... | 02/02/1982 |
| 4268771 | Magnetic probe A magnetic probe for sensing the passage of a moving magnetic element, comprising a radially magnetized cylindrical permanent magnet, formed of a flat sheet of elastomer bonded ferrite material magnetized across its smallest dimension and curled to cylind... | 05/19/1981 |
| 4256986 | Magnetic pickup subassembly Magnetic pickup having a matrix-bonded permanent magnet sleeve around one end of an elongated cylindrical pole piece and a coil around the other end. The magnet sleeve has a preferred direction of magnetization radial to the axis of the pole piece.... | 03/17/1981 |
| 4229696 | Sensor for measuring magnetic field changes A sensor for measuring the change of a magnetic field comprises a magnet for generating a constant magnetic flux, and magnetically conductive members magnetically coupled to the magnet for producing first and second magnetic fields, the first magnetic fie... | 10/21/1980 |
| 4225006 | Vehicle control speed sensing method and apparatus This invention relates to a method of and apparatus for controlling the operation of a vehicle by means of electrical signals generated in a manner dependent on the road speed of the vehicle wherein the method comprises setting up a specific magnetic fiel... | 09/30/1980 |
| 4157482 | Rotation detecting device A compact rotation detecting device in which a rotor providing a set and a reset permanent magnets, a disk providing a plurality of wires having Wiegand effect in the radial direction of the disk, and spiral coils mounted on plural insulating disks are as... | 06/05/1979 |
| 4150314 | Level amplitude output rotary speed transducer A Wiegand wire forms part of a stator coil facing a rotor on which permanent magnets are located. The stator coil has two coil portions or coil sections which are wound or connected to provide opposing inductive outputs upon passage of the magnets in fron... | 04/17/1979 |
| 4132980 | High-sensitivity inductive transducer for rectilinear or rotational displacement A core with at least three elongated legs, at least one leg being centrally located among all the elongated legs, is joined at at least one end by a yoke portion connecting all the legs. The central leg or legs is wound with a magnet winding close to the ... | 01/02/1979 |
| 4127814 | Detector for discriminating between two metals on a relatively moving member by being positioned at a distance where it senses one but not the other This invention relates to a detector for detecting the relative position of two members, said detector being constituted by a reference mark made on a first member, by a detection member securely connected to the second member and influenced by the coinci... | 11/28/1978 |
| 4117401 | Position transducer, particularly to determine the instantaneous angular position of a rotating shaft, especially of an internal combustion engine To suppress stray noise pulse in inductive pick-ups located in magnetic relation to a rotating body, typically the flywheel of an internal combustion engine, so that the instantaneous shaft position can be accurately determined, to accurately compute an i... | 09/26/1978 |
| 4107603 | Electromagnetic means and method for detecting propeller shaft bearing wear Apparatus monitors the wear of a propeller shaft bearing such as may be found in a tanker, or any other ship, while it is in service. As the shaft is rotating a sensor provides a signal corresponding to the displacement of the shaft with respect to its lo... | 08/15/1978 |
| 4106005 | Apparatus for detecting elongation of a joint of a conveyor belt An apparatus for detecting elongation of the joint of a conveyor belt has a pair of sensors, each of which includes an iron core having a coil winding therearound and being spaced at a predetermined distance from each other parallel with the conveyor belt... | 08/08/1978 |
| 4080592 | Transducer for vehicular service compensated for accelerator movements of the vehicle An inductive transducer is provided with a core with legs extending in opposite directions from a yoke on which a coil is wound. On the leg portions extending on one side of the coil a short-circuiting ring displaceable in accordance with the displacement... | 03/21/1978 |
| 4045738 | Variable reluctance speed sensor of integral construction utilizing a shielded high coercive force rare earth magnet positioned directly adjacent the sensing rotating element A compact, highly efficient, integral construction for a speed sensor is described which, in a preferred embodiment, utilizes a cup shaped magnetically soft body or housing as an integral core, sheath and flux return path for a rare earth permanent magnet... | 08/30/1977 |
| 4030027 | Apparatus for non-contact measurement of distance from a metallic body using a detection coil in the feedback circuit of an amplifier Apparatus for non-contact measurement of the distance between a detecting coil and a metallic body mounted in confronting relation thereto comprising a differential amplifier to one terminal of which is connected a reference oscillator and to the other te... | 06/14/1977 |
| 4023091 | Apparatus for detecting axial displacements in power windings of electric induction machines In an induction machine having power windings disposed coaxially about the iron core thereof, means for reducing an axial mechanical force produced in any given winding by the interaction of the radial components of leakage flux produced at a time of shor... | 05/10/1977 |
