Bizarre Patents
A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 7197944 | Hub unit with sensor A sensor device including a resolver having a rotor provided on a rotation-side raceway member of a hub unit and a stator provided on a stationary-side raceway member of the unit, and a processing circuit for processing a signal to be output in accordance with an ai... | 04/03/2007 |
| 7106162 | Current transformer A current transformer includes a Rogowski coil, having an opening at the center in which a conductor penetrates, comprising, a printed circuit board having a plurality of layers forming at least first to fourth circuit board surfaces including a circuit board top su... | 09/12/2006 |
| 7096593 | Angle-measurement device An angle-measurement device comprising a carrier element with at least two tracers. At least one tracer is configured as an annular surface, and at least one tracer is configured as a cylindrical surface. Each tracer has essentially coinciding periodic patterns that... | 08/29/2006 |
| 6831542 | Micro-electromechanical inductive switch A micro-electro mechanical (MEM) switch capable of inductively coupling and decoupling electrical signals is described. The inductive MEM switch consists of a first plurality of coils on a movable platform and a second plurality of coils on a stationary platform or ... | 12/14/2004 |
| 6703734 | Bearing with noncontact signal transfer mechanism A ring magnet is attached to an outer ring by a magnet holding unit. A coil hold unit attached with a generator coil is provided at an inner ring to face the ring magnet. A substrate with a transmission circuit and a loop antenna is attached to the coil h... | 03/09/2004 |
| 6489874 | Non-contact electric power transmission apparatus A non-contact electric power transmission apparatus including a primary unit and a secondary unit. The primary unit includes a primary core and a power primary winding. A signal secondary winding is wound around the primary core and provided to be apart f... | 12/03/2002 |
| 6307440 | Oscillating circuit, an oscillator frequency adjusting method, and a tuner In an oscillator circuit employing a pattern coil on a printed-wiring circuit board as a resonator circuit, in order to satisfactorily adjust dispersion in oscillation frequencies, an air-core coil wound by 0.5 turn and less than one turn is provided so a... | 10/23/2001 |
| 5521444 | Apparatus for transferring electrical power from a stationary device to a rotating device without the use of brushes or contacts A device for transferring electrical power from a stationary member to a rotatable member is provided by incorporating an air core transformer of which a first coil is rigidly attached to the stationary member and a second coil is rigidly attached to the ... | 05/28/1996 |
| 5239288 | Resolver having planar windings A printed circuit resolver produces voltage outputs that vary according to sine and cosine functions with the angular position of a rotor winding. Each resolver winding is planar and comprises at least two planar multi-turn coils formed on a disk. Each co... | 08/24/1993 |
| 5001585 | Rotational transformer for a tape recorder A rotational transformer for a rotational transducer in a tape recorder includes a stator piece having a first ring-shaped magnetic core and a stator winding associated therewith. A rotor piece includes a second ring-shaped magnetic core coaxially located... | 03/19/1991 |
| 4829401 | Rotating transformer with foil windings The transformer comprises a rotor core (1) in the form of a circular ferromagnetic disc which is rotatable about its axis (5), and a stator core (3) in the form of a circular, stationary ferromagnetic disc which is coaxial with the rotor core. The facing ... | 05/09/1989 |
| 4777436 | Inductance coil sensor An inductance coil sensor in which a rotating spoiler (46) alters the inductance of a stationary coil (1230/1432) having two parts (12a, 12b; 30a, 30b/14a, 14b; 32a, 32b) disposed on opposite sides of the spoiler. Changes in inductance of the stationary c... | 10/11/1988 |
| 4754180 | Forceless non-contacting power transformer A transformer for coupling electrical power from a stationary location to a moving location with a minimum of disturbance forces between the stationary and moveable components. The transformer is particularly adapted to coupling power to a magnetically su... | 06/28/1988 |
| 4700189 | Linear resolver A linear synchro/resolver comprised of an opposed pair of stator assemblies, each of which has a plurality of corresponding, opposed, toothed pole piece pairs, a toothed slider movably mounted between the opposed sets of pole piece pairs, and wherein the ... | 10/13/1987 |
| 4532447 | Rotary electric machine forming more especially a speed variator or a torque converter The invention relates to a rotary electric machine able to be used as a speed variator and/or a torque converter. It comprises a stator with s pairs of poles, a central rotor (RM) with p pairs of poles and an intermediate rotor (RT) comprising, at its inn... | 07/30/1985 |
| 4500832 | Electrical transformer A coaxially aligned transformer having a secondary coil wrapped with a high dielectric insulating material wrapped on a support member and slidably supported between a lock block and a support base to permit the transformer electrical parameters to be adj... | 02/19/1985 |
| 4497004 | Picture reproducing apparatus in a helical scanning video tape recorder A picture reproducing apparatus for a helical scanning video tape recorder including an impedance transformer; a video head connected to the input of the impedance transformer; a resonance circuit connected to the output of the impedance transformer; a pr... | 01/29/1985 |
| 4463333 | Transformer-type position transducer A position-measuring transformer having a pair of confronting relatively movable supports (12, 14) upon the confronting faces (16, 18) of which lie patterns of conductors is disclosed (26, 50). The conductors (26, 50) on the respective supports (12, 14) a... | 07/31/1984 |
| 4430632 | Coaxial coupling and locking mechanism A coupling mechanism is disclosed for coaxially connecting a pair of connectable components, such as a pair of transducer assemblies each having a stator. A coupling ring is carried by one stator and engageable with the other for drawing the stators toget... | 02/07/1984 |
| 4404559 | Rotative power and signal coupling A rotative coupling allows the inductive transmission of power and the transmission of informational signals between a stationary part and a hollow, rotating part. The informational signals are transmitted on a modulated beam of light passing through and ... | 09/13/1983 |
| 4223313 | Power transfer circuit In a robot, the transmission of electrical power and signals is effected without contact at a joint position, either by using a magnetic coupling provided by means of a transformer formed by windings housed in ferrite cores, or by capacitive coupling obta... | 09/16/1980 |
| 4183001 | Transformers for induction heating equipment One of two coils of approximately the same diameter, forming the primary and secondary coils of a transformer for tube welding or other induction heating equipment, is mounted for movement relative to the other, preferably about a pivotal axis parallel to... | 01/08/1980 |
| 4138253 | Method for making a member of a position measuring transducer A method for making an improved member of a position measuring transducer is disclosed, wherein the member has a pattern of uniformly pitched bars thereon. The method comprises the steps of superimposing a plurality of positionally shifted latent images o... | 02/06/1979 |
