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7424825 |
Barometric altimeter including a temperature compensation device
The present invention proposes a portable barometric altimeter ( 10 ) including a pressure sensor ( 14 ), a calculation unit ( 16 ) which determines an altitude value (H) as a function of the...
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6812853 |
Telemetering system
A telemetering system allows a receiver to provide an indication related linearly with the data from a sensor in a transmitter that comprises an amplifier composed of relatively inexpensive and...
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6734800 |
Atmospheric low pressure alarm system
A device used to alert an individual of the presense of low atmospheric pressure. This is accomplished through the use of an aeronoid barometer, and an audio/visual alarm. The counterclockwise...
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6715334 |
Apparatus and method for manufacturing thick-walled bent pipe
An apparatus and a method for manufacturing a thick-walled bent pipe with a simple structure at low production cost, which has durability and can manufacture an elbow material for piping with...
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6662652 |
Altimeter having correctable digitizer and method of use
An altimeter ( 24 ) of the aneroid type having a correctable digitizer 26 is shown. When the pilot sets the altimeter to the local barometric pressure, the correctable digitizer is also set to...
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6430479 |
Methods, apparatus and computer program products for determining the vertical speed of an aircraft
A method, an apparatus and a computer program product are provided for accurately determining the vertical speed of an aircraft in a manner independent of signals provided by an air data computer,...
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5148376 |
Pressure instrument with depth/altitude and time display
In a pressure instrument with depth/altitude and time display, a measurement time period from a starting instant up to a stopping instant of the time measurement is measured by measurement-time...
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5016473 |
Altimeter
The small altimeter according to the invention comprises a frame (7-11;14,15), a display comprising drums (45,79) and a dial (23) cooperating with a hand (46) and a multiplying gear train (53 to...
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4953404 |
Mechanism for an aneroid barometer
Mechanism for an aneroid barometer comprising, in a support 2, a primary lever 4 whose center is in contact with the cell 3, the axis of rotation 40 of this primary lever being located at the...
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4453154 |
Altitude monitor
An apparatus to continuously monitor a preset altitude for a pilot of an aircraft. It senses a change in altitude and an audible as well as a visible alarm tells the pilot that he has deviated from...
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4403512 |
Servo-type capsule-equipped instrument
A servo instrument, particularly a servo altimeter, with a minimum of display error. The instrument comprises a capsule assembly, a sector adapted for rotation corresponding to the displacement of...
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4143335 |
Pressure sensor including a resistor commutator for providing unambiguous atmospheric pressure data
A pressure transducer such as for use in a radiosonde includes a substrate and a plurality of conductive contacts formed thereon. An arm is movable over the contacts in accordance with the sensed...
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4133209 |
Altimeter
An instrument for providing an altitude representation in accordance with ambient atmospheric pressure has a mechanism that is manually-operable to effect adjustment to the setting of a datum...
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4109607 |
Reference index for instrument dials
A reference index is provided for dial type instruments and includes an indicator selectively positioned on the face of the instrument for operation in either of two functional modes. The reference...
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4106343 |
Solid state barometric altimeter-encoder
A solid-state barometric altimeter-encoder. The atmospheric pressure is cared to a reference vacuum on a hybrid IC pressure transducer which generates a proportional signal. This analog signal is...
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4052902 |
Static friction free altimeter
A piezoelectrical transducer for providing an altimeter with vibratory motion to attenuate the effect of static friction on the movement of a gear train responding to an altitude responsive aneroid.
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RE29436 |
Encoder for altimeters and the like instruments
An inexpensive, compact and yet highly accurate instrument for transmitting coded signals representing altitudes at which an aircraft is flying, the instrument comprising an altitude sensing unit...
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4023414 |
Altimeters
An altimeter has a pointer which rotates clockwise once round a dial for each thousand unit (feet or meters) increase in altitude, the zero of the dial being in the nine o'clock position. Two...
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4010646 |
Barometric non-linear altitude compensator means
A correction mechanism for supplying an altimeter indicator with a rotational torque to compensate for the non-linear relationship between pressure altitude and barometric pressure. The correction...
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4008618 |
Flight instrument
Aircraft altitude is visually displayed at a front panel of a flight instrument in analog form by a rotating pointer and in digital form by means of a rotary drum digital indicator. Barometric...
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4006638 |
Altimeter-encoder
An aircraft altimeter-encoder is provided with an altitude sensitive barometric or aneroid bellows which simultaneously drives a visual altitude indicator and an altitude digital encoder. The...
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3978730 |
Indicating instruments
An altimeter has a rotatably-mounted index that is driven to rotate through one complete revolution around a scale for each change of 1,000 feet in altitude sensed by two evacuated manometric...
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3968684 |
Apparatus and method for determining optimum direction of process of sailing vessels
Apparatus and a method for use in determining the optimum direction of progress of a sailing vessel from one point to a second point are described. The angle of leeway between the direction of...
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3929019 |
Pressure transducer
Static pressure acting on an aneroid provides movement of a vane as part of a mechanical motion to electrical signal transducer generating an electrical signal varying with pressure. The aneroid is...
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3915007 |
Register means for displaying the altitude of an aircraft in an altimeter
A dial display for use in an altimeter wherein a pointer is rotated relative to a first disc which has primary graduations thereon indicative of an altitude above sea level. A second disc has a...
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3906223 |
Encoder for altimeters
Encoder means adapted to be connected to an altimeter of the type having a rotary shaft output. A rotatably mounted coded disc having code markings on a plurality of circular tracks, is coupled to...
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3886473 |
Capacitive pressure and displacement transducers
A capacitive transducer for converting a small displacement of a mechanical input member into an electrical signal directly proportional to the quantity being measured, even if the...
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3867680 |
INSTRUMENTATION SYSTEM CONTAINING A NULL SHIFTING MEANS
An instrument has a parameter indicator graduated in units which are a non-proportional function of movement produced by a parameter sensor element. The parameter sensor element is given a...
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3852711 |
ALTITUDE ALERTING INSTRUMENT
An aircraft altitude alerting instrument. The instrument includes a pressure reference scale and an altitude alerting scale. Means is provided for placing a selected altitude alerting setting on...
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3831451 |
MEANS FOR AVOIDING STATIC FRICTION
A pressure driven altimeter is provided with an A.C. torquer to impart low amplitude torsional oscillations to a drive shaft of the gear train between the aneroid mechanism and the output pointer....
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3829640 |
DIFFERENTIAL BAROSWITCH
1. A differential baroswitch comprising: A first chamber, a second chamber, and a third chamber between the first second chambers; A pressure responsive movable element between the first and second...
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3795151 |
ELECTROMAGNETIC COUPLING FOR AN ALTIMETER
A synchronizer for coupling a corrective servo mechanism to a pneumatic altitude sensor in an aircraft to provide a display with a positive pressure altitude indication. The synchronizer has a...
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3785339 |
WEATHER INDICATING INSTRUMENT
A weather instrument for indicating atmospheric pressure and expected weather conditions incident to falling and rising barometric conditions, including a stationary panel with a circular scale for...
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3750473 |
ALTIMETERS
An aircraft altimeter which provides a signal indicative of altitude represented in coded form. The altimeter includes an indicator dial, one or more pointers driven by a pointer shaft, and an...
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3747409 |
ALTIMETER BARO-SETTING MECHANISM
In barometric setting mechanisms for aircraft altimeters providing visually readable outputs, an elongated, non-linear scale calibrated in inches of mercury and/or millibars printed upon a...
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3745823 |
AIR SPEED INDICATOR
A pitot tube connected, bellows actuated and temperature corrected air speed indicator including a linear upstanding readout scale. The indicator includes adjustments whereby the calibration of the...
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3685360 |
ADJUSTMENT MECHANISM FOR CABIN ALTIMETER ROTATABLE LIGHT HEAD
A dual transilluminated cabin altimeter and differential pressure indicator is provided with an altimeter dial which is rotatably mounted with respect to a fixed reference "bug" in order to...
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3668933 |
AIRCRAFT INSTRUMENTS
An aircraft height-indicator shows height in pressure-based units that correspond to intervals of vertical distance which increases in magnitude as height increases and which define economically...
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3631723 |
PRESSURE-RESPONSIVE INSTRUMENT
A motion-transmitting and amplifying mechanism for a pressure-responsive instrument, such as an aneroid barometer, which includes a readily calibrated capsule coupled by a motion-amplifying...
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3631435 |
TORNADO SENSING DEVICE
A tornado warning device in which an electrical signal means is controlled by an electric circuit having a switch responsive to barometric pressure and a means for adjusting the switch to...
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3495462 |
PROTECTIVE LINKAGE IN ELECTRICALLY AND PRESSURE ACTUATED INSTRUMENT
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3478593 |
COMPENSATING MEANS FOR SYNCHRO OUTPUT FOR BAROMETRICALLY ACTUATED SYSTEMS
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3451272 |
BAROMETER MOVEMENT
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3400589 |
Reference pressure comparing barometer
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3353408 |
Altimeter for producing data referenced to a predetermined pressure
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3242737 |
Encoding system for a navigational apparatus
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3230775 |
Altimeter
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3218862 |
Motion correction mechanisms
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3191439 |
Altitude sensing apparatus
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3157985 |
Watch incorporating a barometer
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