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7140320 |
Device for holding the log transmitter of a boat speedometer
A device for holding a boat speedometer log transmitter in a boat hull has a sleeve body fixed in a perforation in the hull with a longitudinal center opening for removably inserting and retaining...
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7121904 |
Water jet propulsion watercraft
A water jet propulsion watercraft that allows accurate speed detection of a speed detection unit to be achieved. A water jet propulsion watercraft includes a hull bottom plate with left and right...
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6938472 |
Static pressure calculation from dynamic pressure for rotary air-data system and methodology therefor
A Rotary Air-data System (RADS) periodically samples pressure data from a main rotor blade mounted pitot-scoop integrated with a high accuracy pressure sensor to compute a velocity vector that is...
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6676461 |
Speed detecting device mounting structure for a vessel
To provide a speed detecting device mounting structure for a vessel in which a paddle is prevented from being entangled with rubbish and seaweed in the sea, and the paddle is prevented from being...
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5699749 |
Exhaust system, hull, and speed indicator for watercraft
A personal watercraft exhaust system, hull underplate, and speed sensor and sponson arrangement. The exhaust system for the engine provides a compact assembly that incorporates a pair of expansion...
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5606253 |
Guided flow marine speedometer including angularly shaped housing for guiding water to a paddlewheel sensor at that angle
A marine speedometer for mounting to the exterior transom of a marine vessel includes a housing mounted to the transom flush with the bottom surface of the hull. A paddlewheel affixed to the...
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5483828 |
Speed indicator for marine vehicles
A speed indicator for marine vehicles is mounted on the lower transom area of such a vehicle and includes an impeller. The impeller rotates at an angular velocity dependant on the speed of marine...
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5369360 |
Recessed paddle wheel speed measuring device for personal watercraft
A speed measuring device for use with shallow draft jet pump propelled boats includes a magnetized paddle wheel with diametrically opposed paddles having similar charges and adjacent paddles having...
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5366394 |
Speed detecting system for marine propulsion unit
An improved speed detecting system for a marine propulsion unit that can be integrated into the unit and which comprises an element driven by water flow contained within the propulsion unit and...
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5313834 |
Phased array sonic transducers for marine instrument
A low cost phased array sonic transducer is described in which an array of transducer elements separated by spacers are held within a frame which applies a compressive force transverse the length...
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5187978 |
Knotmeter impeller eliminator system
A knotmeter impeller eliminator system is provided which includes a circuit that simulates the pulsed output of an impeller-type transducer system by generating pulses having a pulse repetition...
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5186050 |
Marine sensor mounting mechanism
A marine sensor mounting mechanism having a tubular sleeve in the hull of a boat; valve means mounted for pivotal movement in the sleeve from an open position when a sensor is in place to a closed...
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RE33982 |
Marine instrument
A through-hull speed sensor of the magnetized paddlewheel sensor type wherein a paddlewheel is rotatably supported in a cavity adjacent a magnetic sensing device which generates electrical pulses...
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4911005 |
Velocity-measuring device
A combination of a movable structure (adapted to ride on or over a surface while supporting or carrying at least one person) and a velocity-measuring device which includes means responsive to air...
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4713967 |
Method and apparatus for measuring a water condition
A method for measuring a water condition such as temperature or speed proximate a desired location in the water such as near a fishing bait. The method comprises positioning a sensor for the...
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4676097 |
Submersible knotmeters
Rotary type knotmeters designed to detect relative motion between an underwater vehicle and the water in which it is submersed at relatively great depths comprise a vaned rotor external unit, an...
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4653320 |
Apparatus for measuring and displaying the speed of a craft, especially of a sailboard
An apparatus for measuring and displaying the speed of a craft, especially of a sailboard, comprises on one hand an immersed rotator (1) equipped with a permanent magnet and attached to the craft...
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4644788 |
Modular marine instrument
A modularized marine instrument sensing device is described wherein a paddlewheel assembly for providing an electromagnetic signal proportional to marine vessel speed is separably mountable on...
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4586374 |
Procedure and means for wireless measurement of the speed of small craft such as a surfboard or a boat
A procedure and apparatus for wireless measurement of the speed of a small craft, such as a surfboard or a boat, wherein the speed of the craft is measured with the aid of a speed pick-up by means...
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4548073 |
Troll meter
This troll meter is used to determine the speed of a boat in the range of one to three knots. Primarily, it consists of a shaft having three marked and different pitched propellers, which are...
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4535626 |
Display system to indicate sailing data of a small size boat
A display system for indicating sailing data to an operator of a small sized sailing boat in which a speed sensor in the hull transmits pulses to a speed measuring device which stores the data in a...
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4507960 |
Speed indicator
A speed indicator for water vehicles which has a vane wheel transmitter mounted for rotation about an axis is exposed to the extent of one half thereof to the flow of water. In order to obtain a...
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4485671 |
Miniature electro-optical air flow sensor
A sensor for measuring flow direction and airspeed that is suitable, because of its small size, for rapid instrumentation of research airplanes. A propeller driven sphere rotating at a speed...
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4483191 |
Airspeed indicator for low-speed conveyances
An airspeed indicator for low-speed conveyances which comprises a thin cylindrical hood, a generator supported at the center within the hood and a propeller mounted on the driving shaft of the...
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4399695 |
Underwater sensing mechanism and method
A water speed sensing transmitter unit suspended from a fishing boat at the depth fishing gear is being trolled actuates transmission of a pulse signal through the water for detection by a receiver...
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4324135 |
Speed indicator for fishing gear
A water speed sensor suspended from a fishing boat at the depth fishing gear is being trolled actuates an underwater transducer to transmit a sonic signal detected by an underwater transducer...
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4206637 |
Marine speedometer
A paddle wheel transducer for mounting to a marine vehicle utilizes a source of radiant energy for establishing a beam of radiant energy directed perpendicular to the direction of movement of the...
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4159644 |
Ship's log and speedometer
My invention relates to ship'logs and speedometers, comprising magnetometers and associated circuitry located inside the hull of the vessel, for accurately sensing, indicating, and recording the...
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4136562 |
Audible speed indicator for hang glider
An audible speed indicator for hang gliders or the like comprises an air driven impeller 16 whose initial point of rotation start-up may be adjusted to correspond to the stall speed by rotating...
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RE28839 |
Marine speedometer
A low drag impeller wheel mounted in an enclosure which when installed in the hull of a ship will rotate through the force of water acting upon it, and operate magnetically a pulse generating...
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3824854 |
SOUND TRIM APPARATUS FOR BOAT SPEEDOMETER
The sound generating device is mounted on a boat responsive to a shaft rotating at a speed proportional to the speed of the boat. Fixed to the shaft is a cam. Upon each rotation of the shaft, the...
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3756077 |
VEHICULAR DRIFT INDICATOR-SPEEDOMETER
A vehicular drift indicator - speedometer for measuring either vehicular drift or speed, or the rate of flow of a medium. Invention utilises a transducer in form of an impeller mounted in a...
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3754441 |
KNOTMETER
The present invention relates to a "speed indicator or knotmeter," for indicating the speed of a boat; and more particularly, relates to a knotmeter "sending unit" that may be easily and quickly...
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3706224 |
MARINE SPEEDOMETER
A low drag impeller wheel mounted in an enclosure which when installed in the hull of a ship will rotate through the force of water acting upon it, and operate magnetically a pulse generating...
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3670569 |
FLIGHT MEASURING APPARATUS
This invention relates to an apparatus for simultaneously measuring the angle of incidence, the angle of sideslip, distance covered along a flight path and air speed of an aircraft which comprises...
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3665764 |
PROPELLER TYPE VELOCITY INDICATOR
A propeller type velocity indicator including a casing; a propeller shaft tatably mounted through the casing with a portion of the shaft extending within the interior of the casing and a portion...
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3657924 |
MARINE ELECTRICAL SPEEDOMETERS
Marine speedometers having a submerged electrical generating unit electrically connected to a remotely located indicating unit. The generating unit comprises an impeller driven rotating magnetic...
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3548654 |
TRUE AIR SPEED METER WITH RELATIVE WIND DIRECTION
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3531988 |
KNOTMETER
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3496770 |
BOAT VELOCITY INDICATING ARRANGEMENT
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3618382 |
FLIGHT MEASURING INSTRUMENT
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3457782 |
TURBINE TYPE FLUID FLOW MEASURING DEVICE
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3433065 |
MARINE SPEEDOMETER AND ODOMETER
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3364741 |
Linear air-speed sensor
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3321969 |
Marine speedometer
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3287969 |
Log for indicating velocity of motion of watercraft
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3175395 |
Apparatus for sensing and measuring fluid turbulence
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3175396 |
Holding device for logs, particularly propeller logs
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3175152 |
Transistorized wind speed indicating and recording system
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3137164 |
Electrically operated marine speedometer-odometer
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