Class 33/345 - Magnetic

Subclass of Class 33 - Geometrical instruments
Definition: Device wherein the damping means includes a generator of
No. of patents: 23
Last issue date: 07/28/2009

Number	Title	Issue Date
7565748	Portable digital horizontal inclinometer Taught herein is a portable digital horizontal inclinometer which utilizes magnetic field to dampen the free swing of the pendulum. The inclinometer features simple structure, small size, high sensitivity, good linearity, high precision, and strong anti-jamming capa...	07/28/2009
7395605	Apparatus and method for measuring and controlling pendulum motion A magnetically damped inclinometer has a shaft with attached pendulum that rotates. The rotation causes an index member to rotate past one or a set of magnets or electromagnets that are connected to the load. The magnet or electromagnet may be mounted directly the l...	07/08/2008
7380345	Portable digital horizontal inclinometer Taught herein are portable digital horizontal inclinometers which utilize magnetic field to dampen the free swing of the pendulum. The inclinometers feature simple structure, small size, high sensitivity, good linearity, high precision, and strong anti-jamming capab...	06/03/2008
7318283	Inclination sensor An inclination sensor includes: a case having a turning shaft section projected in a lateral direction on a front surface thereof; magnetism detecting means fixed on an upper side of the turning shaft section; a pair of magnets fixed in parallel to a rear surface of...	01/15/2008
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
7121012	Apparatus and method for measuring and controlling pendulum motion A magnetically damped inclinometer has a shaft with attached pendulum that rotates. The rotation causes an index member to rotate past one or a set of magnets or electromagnets that are connected to the load. The magnet or electromagnet may be mounted directly the l...	10/17/2006
7117607	Electronic inclinometer An apparatus used for notifying a user of a patient's upper body physical orientation. The apparatus uses an inclinometer that is attached in the region of the patient's upper body to measure the physical orientation of the patient's upper body, which is then transm...	10/10/2006
7111412	Wheel vehicle measuring apparatus Disclosed is a vehicle wheel measuring apparatus, comprising a push rod, a counter, a wheel, and a gear coupled mechanism, wherein the counter is disposed on top of the push rod. Through the gear coupled mechanism, the axle center of said counter and the wheel axle ...	09/26/2006
6981331	Fork level indicator with magnetic dampening means A magnetically damped fork level indicating device comprises a housing having a gauge section; an elongate indicator arm pivotally coupled to the housing, the arm having first and second sections disposed on opposite sides of the axis; a weight coupled to the indica...	01/03/2006
6951059	Compass-based indicator with magnetic shielding The invention is directed toward a magnetic shield included in a compass-based indicator tool. The indicator tool utilizes a compass to indicate a device setting of an implantable medical device. The implantable medical device may include a target that creates an in...	10/04/2005
6918283	System and method for demonstrating and investigating brownian motion effects on a diamagnetically suspended particle An apparatus for demonstrating, investigating and observing Brownian motion and temperature of a medium, such as gas or liquid, uses a small particle which is diamagnetically suspended in the medium. The tiny magnetized particle having a known mass is levitated usin...	07/19/2005
6898970	Inertial navigation device for ion propulsion driven spacecraft An extremely sensitive accelerometer suitable for use in extreme temperatures such as those encountered during space travel is formed by levitating a magnet in a box or sphere composed of diamagnetic material such as pyrolytic carbon, and a means for measuring the p...	05/31/2005
6832518	Pressure wave sensor using levitated mass A mass is levitated with respect to a base, at least one of which is comprised of a diamagnetic material, with the levitated mass also having a permanent magnetic property. A second permanent magnet is optionally configured such that it attracts the levitation mass ...	12/21/2004
6799462	Gravimetric measurement method and system A mass is levitated with respect to a base at least one of which is comprised of a diamagnetic material, and the levitation mass also having a permanent magnetic property. A second permanent magnet is configured such that it attracts the levitation mass away from sa...	10/05/2004
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
6691420	Laser line beam emitting apparatus having a mechanism for automatic location of a tilted laser unit holder to a desired position A laser line beam emitting apparatus provided hereto has accommodations of rough handling or quick operations, preferable for construction sites in use, having a gimbals mechanism, and a laser unit holder swingy held by the mechanism and having at least o...	02/17/2004
6182370	Manually operated angle pickup A manually operated angle pickup or detector has a rotatably mounted and manually movable transmitter element, a sensor that scans the transmitter element and a detent coupling that operates magnetically and in a contactless manner to maintain the transmi...	02/06/2001
5778545	Magnetically damped azimuth resolver A means for damping a low-friction azimuth resolver by use of an array of small magnets acting on a metallic pendulum attached to the resolver shaft. The magnetic field acts on the pendulum motion to induce a motional electromotive force and associated cu...	07/14/1998
5174035	Attitude sensing apparatus An attitude sensing apparatus for detecting a tilt angle and an azimuth angle of the tilt of a structure includes a pair of detecting devices disposed on the structure at right angles to each other. Each of the detecting devices consists of a rotary shaft...	12/29/1992
4700490	Compass A compass which is self-compensating for dip of its pointer arms irrespective of variances in the earth's magnetic forces at different geographical locations includes a magnet disposed beneath respective proximal portions of the pointer arms so that the p...	10/20/1987
4667413	Inclinometers An inclinometer comprises a casing, a pendulum mounted in the casing and having a pendulum swing axis, a mass in the form of a flywheel mounted in the casing and which tends to remain stationary when the casing is rotated about the pendulum swing axis, an...	05/26/1987
4102055	Sensitive inclinometer The angular deflection or tilt angle from vertical is determined by an inclinometer wherein a weight is offset and hung from a rotatable shaft to which a needle pointer is affixed. When the inclinometer is oriented such that the shaft is vertically aligne...	07/25/1978
3950859	Angular displacement measuring apparatus Angular displacements are measured relative to either an external magnetic field as in a compass or relative to a vertical reference as in inclinometers or the like by selective orientation of the device. A bistable weight balancing apparatus and a dual b...	04/20/1976

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Class 33/345 - Magnetic