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Class 33/327 - Fluid, suspension or control


Subclass of Class 33 - Geometrical instruments
Definition: Device including fluid means for (1) wholly or partially
No. of patents: 27
Last issue date: 03/27/2007


NumberTitleIssue Date
7194813Gyrocompass
A gyrocompass has a gyrosphere which incorporates a rotor and floats in a liquid tank filled with an electrolyte, and a plurality of electrodes which are disposed in the gyrosphere and the liquid tank, and are respectively opposed through the electrolyte, wherein at...
03/27/2007
7114263Gyrocompass
A gyrocompass has a liquid tank containing a supporting liquid therein, a gyrosphere floating in the liquid tank by the supporting liquid and whose central portion is rotatably supported by a center pin provided in an upper portion of the liquid tank, a gyro rotor i...
10/03/2006
7040175Pressure reading structure for a pressure gage
An improved pressure reading structure for a pressure gage is disclosed, comprising a data plate, a rotable pointer and a protection casing. The data plate includes a central area and an extended area next to and connected to the central area, both of the areas bein...
05/09/2006
6816064Escape apparatus detecting an emergency situation and providing illumination
A survival device for use in an emergency situation includes a battery, a lamp, and a detection circuit for detecting an occurrence of the emergency situation and for switching the lamp to be powered by the battery when such an occurrence is detected. In one form, t...
11/09/2004
6453570Electrically driven floating gyrocompass
A gyrocompass having a capsule, mounted to float in an air-tight fashion, for at least one electrically driven gyro. The capsule is produced from two mutually adapted shells which are sealed with respect to one another and consist of a high-strength, corr...
09/24/2002
5771596Container for liquids including a level control and a gyro compass
A first liquid container has therein a level control including a float valve, a storage tank or second container and a third container having therein a liquid which is maintained at a fixed liquid level. The third container is connected to the liquid in t...
06/30/1998
5425281Fluid pendulum arrangement for implementing fast erection of vertical gyroscopes
A fluid pendulum arrangement is used for implementing fast initial erection of vertical gyros by maintaining the gyro wheel spin axis near vertical during the gyro "power-off" mode of operation. Fluid is contained in a lower fluid chamber section which is...
06/20/1995
5107597Magnetic compass
A magnetic compass has an instrument body adapted to be held level by a gimbal mechanism and having a vertical cylinder member, a spherical or semi-spherical float body on the upper end of the cylinder member and having a spherical surface facing downward...
04/28/1992
4879918Gyro compass
A gyro compass having a gyro case incorporating a gyro of which the spin axis is substantially horizontal, a vertical ring disposed around the outer periphery of the gyro case and for rotatably supporting the gyro case around a vertical axis, a follow-up ...
11/14/1989
4708024Gyro apparatus
A gyro apparatus comprising a gyro casing incorporating therein a gyro the spin axis of which is made substantially horizontal, a supporting apparatus for supporting the gyro casing with a freedom of three axes, a north-seeking apparatus for giving a nort...
11/24/1987
4667414Direction-finding devices
A housing defines a chamber having a spherical inside surface, and a spherical float is supported within the chamber by a liquid so that the outside surface of the float is equidistantly spaced from the top and bottom of the inside surface of the chamber....
05/26/1987
4614041Magnetic 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
4603483Thermal gradient compensator for fluid rotor gyroscopic apparatus
A fluid sphere gyroscope is used as the north-seeking sensing element in a gyrocompass. A sensor responsive to angular deviation of the gyroscope from the horizontal provides a tilt signal which is used to energize heating elements located along the indep...
08/05/1986
4577414Remotely readable fiber optic compass
A remotely readable fiber optic compass. A sheet polarizer is affixed to a magnet rotatably mounted in a compass body, such that the polarizer rotates with the magnet. The optical axis of the sheet polarizer is preferably aligned with the north-south axis...
03/25/1986
4517750Vertical indicating method and device
A device for sensing angular deviation from the vertical. A housing forming a spherical chamber contains pendulous element comprising a circular plate immersed in a liquid having a low viscosity. The center of the plate is supported for rotational movemen...
05/21/1985
4471665Gyro apparatus
A gyro apparatus including a gyro case for housing a gyro therein, the spin axis of which is selected to be substantially horizontal, a container for accommodating therein the gyro case and containing a liquid within it, a first supporting device for supp...
09/18/1984
4451990Gyrocompass
In a gyrocompass in which a gyro is housed in a gyro case with a spin axis arranged substantially horizontal, a container is provided for surrounding the gyro case and for containing a liquid. A suspension wire supports the gyro case within the container ...
06/05/1984
4441375Gyroscopic instrument
The present invention is directed to a gyroscopic instrument comprising concentric containers, the inner container enclosing a rotating electric gyro rotor, magnetic fluid enclosed between the inner and outer concentric containers, and magnetic flux produ...
04/10/1984
4375726Gyro 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
4297905Gyroscopic vertical reference system
A vertical gyroscopic reference system consists of a gimballed platform solid with a stator in the form of a hollow spherical chamber in which a substantially spherical gyro rotor revolves, the rotor being both driven and supported by air pressure, and ha...
11/03/1981
4283960Gyroscope indexing drive mechanism
The gyrocompass includes an improved indexing mechanism whereby the mechanical position of the gyroscope casing with respect to two orthogonal components of input rate may be measured....
08/18/1981
4258578Floated, internally gimballed platform assembly
The azimuth shaft of an internally gimballed, gyro-stabilized platform assembly is maintained rigid by keeping the uniquely structured inertial instrument-mounting components neutrally buoyant in a flotation liquid that is captive within a spherical shape...
03/31/1981
4193308Fluid dashpot gyro stabilized platform caging system
A caging system for non-closed-loop gyro systems used in gyro stabilized platforms using fluid dashpots in place of automatic caging gyro brakes, torquers, or solenoids. A fluid dashpot is mounted on the gyro stabilized platform for each gyro of the platf...
03/18/1980
4143466Free floating gyroscopic compass azimuth pick-off and rotor drive system
An azimuth directional synchro output is provided for a gyroscopic compass, the compass consisting of a pendulous gyrosphere floating within a spherical cavity containing an electrically conductive fluid. By forming one electrode that carries power throug...
03/13/1979
4109391Portable surveying compass with flux valve and gyrocompass alignment modes
A miniature automatically self-aligning azimuth reference employs a floated pendulous gyrocompass device for the rapid determination of geographic north as required for surveying purposes. Fast approximate alignment with north from an initially misaligned...
08/29/1978
4033045Portable surveying gyrocompass apparatus
A miniature automatically self-aligning azimuth reference employs a floated pendulous gyrocompass device for the rapid determination of geographic north as required for surveying purposes. Fast alignment with north from an initially misaligned condition i...
07/05/1977
4008623Gyroscopic instrument
A gyroscopic instrument which may be a compass includes a hollow sphere enclosing at least one motor-driven gyroscope and floating in an electrically conductive liquid within the inner surface of revolution of a vessel surrounding the sphere at a distance...
02/22/1977
 
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