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7966755 |
Name badge and compass
A combination name badge and compass includes a substantially planar substrate having a front surface that has name indicia thereon, and a rear surface and a clutch bar that includes spaced pins....
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7891691 |
Trailer hitch alignment guide
An apparatus for aligning a trailer hitch and receiver includes an elongated channel or tube defining an angle, such that when the trailer is tilted back for hitching, the upper tube is...
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7331114 |
Magnetic compass structure
A simple self-contained, hand-held instrument for reading an azimuth or bearing in relation to the earth's magnetic field either out in the field or on the water with substantial accuracy. Means...
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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...
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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....
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6665944 |
Magnetic marine compass
A self-balancing marine compass. A described embodiment includes a pivot assembly, a buoyant-magnetic chamber assembly, a reading card assembly, and a dome. The pivot assembly includes fulcrums,...
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6493953 |
Marine compass and package
A marine compass module can be selectively mounted in either a U-shaped bracket or a binnacle, and all of these items can be marketed in the same package. The compass module can be adjusted so that...
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6094830 |
Inclination-compensating display device for a compass
The present invention provides a compass comprising an at-least-partially-transparent housing having a top and a bottom, a vertically orientated, conical pivot bearing, and a magnetic detection...
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5752322 |
Gimballed ouroboros compass device with digital logic
A gimballed compass apparatus with digital logic is disclosed which provides directional and attitudinal data. The apparatus comprises a rotatably mounted slotted disk wherein the slot is...
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5669148 |
Altered light navigation device
A navigational device that employs the azimuthal position of a housing assembly relative to the Earth's magnetic field to alter light such that the altered light becomes a direction indicator. By...
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5528837 |
Adjustable magnetic compass
An adjustable magnetic compass for adjustably compensating for the magnetic variation between magnetic north and map north. The adjustable compass includes a compass dial having directional indicia...
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5517430 |
Real-time digital orientation device
A real time directional orientation apparatus is disclosed for use in a four pi (4π) geometry. The apparatus is to be affixed to an object which translates in space. A source emitter means, which ...
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5469630 |
Gimballed compass device
A gimballed compass apparatus is disclosed which provides directional and inclinational data. The apparatus comprises a rotatably mounted slotted disk wherein the slot is continuously varying in...
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5469631 |
Air bubble free compass and method of manufacturing same
A method of preventing air bubbles in a compass equipped with fluid expansion capability, wherein a compass unit is assembled with a fluid expansion diaphragm; the compass unit is filled with fluid...
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5448835 |
Compass device
A low cost, simple apparatus is disclosed which can be used to provide positional information relative to an external magnetic field. The apparatus comprises a rotatably mounted slotted disk...
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5151753 |
Non-parallax optical sighting instrument
An optical sighting instrument having a main optical path including an objective lens, an eyepiece lens and a beamsplitter for combining or superimposing images. At least three image planes are...
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5146687 |
Compass
The improvement of the present invention provides a camper's compass having a plate or member, such as an arcuate bow, having a direction pointer, which is pivotably mounted over the compass...
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5107597 |
Magnetic 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...
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5079845 |
Dual readout analog/digital magnetic compass
A magnetic compass in which a conventional compass card provides an analog readout of compass heading and a binary coded digital disk together with fiber optic sensing technology provides a digital...
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5079846 |
Floating disk compass
A liquid-type compass comprises a light-weight thin, flat disk of magnetic material so constructed that it is capable of floating on a liquid surface so as to be movable to orient itself in a...
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4953304 |
Mask compass
The invention relates to a mask compass comprising a case attached to the outer surface of glass of goggles. The compass box is placed inside the casing. Thus the checking of the compass does not...
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4930224 |
Magnetic compass
An improved magnetic compass unit consists of a compass bowl, a card assembly pivotally supported on a pivot shaft within the bowl, the card assembly consisting of a compass card and a magnet, and...
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4920656 |
Compass assembly with dial biasing disk
A compass assembly comprising a base, a dial member received in a recessed portion of the base and rotatable relative the base about a dial member central longitudinal axis, and a compass housing...
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4910459 |
Magnetic tile sensor with a non-magnetic case having a flange and a cover cold welded thereon
A magnetic tile sensor has a permanent magnet having a surface coated with a magnetic fluid and housed in a hollow portion of a nonmagnetic case, and a magnetic sensing element arranged outside the...
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4905377 |
Traveler's direction finder
A unit comprising a base on which is mounted an atlas of maps each with an arrow thereon indicating the relation of the map area to north, and on which base is also mounted a compass having in a...
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4885535 |
Magnetic tilt sensor with permanent magnet surrounding magnetic sensing element
There is proposed a tilt sensor in which a first permanent magnet having a magnetic fluid adhered to its surface is housed in a nonmagnetic case, a magnetic sensing element is arranged outside a...
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4866379 |
Tilt sensor having central first bottom surface and second contiguous bottom surface at an angle thereto
There is proposed a tilt sensor in which a permanent magnet having a surface coated with a magnetic field is housed in a hollow portion of a nonmagnetic case, and a magnetic sensing element is...
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4848002 |
Self-centering needle-less magnetic compass
A magnetic compass having a magnet bearing float in a liquid and which float is self-centering and rotatable relative to an element of soft magnetic material spaced below it so as to align a...
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4803426 |
Magnetic tilt sensor
A magnetic tilt sensor in which a permanent magnet having a surface coated with a magnetic fluid is housed in a space inside a nonmagnetic case and is freely movable, and a magnetic sensing element...
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4763419 |
Optical viewing system
There is provided an optical viewing system, which is preferably a compass which eliminates the parallax and sighting problems of prior art optical systems. The compass includes a beam splitter...
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4667414 |
Direction-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...
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4601106 |
Vibration attenuator
A vibrator attenuator, especially for a compass. The vibration attenuator is situated to prevent transfer of vibrations from the fastening base of a compass, e.g. from the framework of a boat, to...
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4577414 |
Remotely 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...
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4488431 |
Wind speed and direction indicator and electric current generating means
This invention relates to a wind direction indicator spherically rotatable about a liquid supported poly axial magnetic compass. The wind direction indicator determines the wind direction without...
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4481810 |
Adjustable wind direction devices
This invention sets forth a wind tracking device particularly useful on sailing vessels for determining the best sailing direction relative to the wind. The reference card is provided with color...
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4471534 |
Remote reading compass with 360 degree roll capability
A cylindrical compass gimballing and data readout system permitting 360° rotation about both yaw and roll axes includes a cylindrical compass housing flooded with semiconductive fluid to permit ...
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4453317 |
Magnetic compass
A magnetic compass including a flexible bowl having a rim with an annular inwardly facing groove. The inwardly facing groove is adapted to engage a flange of a transparent cover in a tight sealing...
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4438568 |
Recreational compass
A recreational or sportman's compass is comprised of an inner vial including a compass needle which together with an azimuth ring is resiliently mounted within a housing so as to be rotatable...
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4402140 |
Telescope with compass
Disclosed is a structure of a telescope with compass which indicates the direction in which the telescope is pointed, at the periphery of the field of vision of the telescope. Referring to the...
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4359823 |
Gravity adjusted compass
A spherical compass having a gravity operated support for automatically positioning its double axis gimbal system into a horizontal plane for selective mounting of the compass with its outer...
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4303172 |
Compass hood
A compass hood construction is disclosed capable of closing entirely the face of a compass yet also providing higher viewing angles than is usually possible with available hood constructions. An...
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4250627 |
Compass apparatus
Compass apparatus includes a housing defining a liquid-filled sealed interior space and a compass card member disposed within the liquid-filled space for rotation therein. The housing comprises an...
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4236316 |
Vessel adaptable to the expansion and/or contraction of fluid therein
A vessel for enclosing fluid, particularly a vessel adapting itself to the expansion and/or contraction of fluid for preventing the occurrence of air-bubbles in the fluid enclosed in the vessel.
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4227313 |
Compasses
A compass includes a chamber, a card, needle or the like together with suspension means which suspend the card, needle or the like within the chamber. Magnet mounting means are engaged with the...
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4156178 |
Terrestrial magnetism responsive device including a pair of balanced north seeking magnets rotatable on a magnetic axis
A terrestrial magnetic responsive device having a float carrying magnetic north-seeking means and responsive not only to magnetic north, but also to local magnetic force fields, said device having...
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4150491 |
Indicator of true wind direction for sail boats
A compass with means attached thereto for presenting a visual indication of the direction of the true wind. Such compass includes a compass dial divided into a plurality of equal parts, and it can...
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4110914 |
Hand compasses
A compass design particularly for wrist mounted and hand held compasses which includes a first exterior, fluid tight case having a pair of pivot members respectively on the upper and lower surfaces...
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4027398 |
Single pivot remote reading compass
A remote reading magnetic compass in which a coded compass disc is supported for rotation by a single upper pivot bearing which maintains the disc and associated compass magnet submerged in a...
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4004348 |
High pressure compass housing
A compass housing capable of withstanding high external pressure such as encountered in deep submergence applications. The housing includes a pair of hemispherical portions interconnected to form a...
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3956831 |
Attitude meter with rotatable arcuate scale
This invention relates to an attitude meter which measures the orientation of a plane surface with respect to the magnetic North direction and a horizontal plane. The meter includes a hollow...
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