Abstract: A compass compensation system is provided for automatically and continuously calibrating an electronic compass for a vehicle, without requiring an initial manual calibration or preset of the vehicle magnetic signature. The system initially adjusts a two axis sensor of the compass in response to a sampling of at least one initial data point. The system further calibrates the compass by sampling data points that are substantially opposite to one another on a plot of a magnetic field and averaging an ordinate of the data points to determine a respective zero value for the Earth magnetic field. The system also identifies a change in magnetic signature and adjusts the sensor assembly.

Abstract: An arrow sight is shown. The arrow sight includes a coupling portion for attachment to an arrow. The arrow sight also includes a targeting portion attached to the coupling portion. The targeting portion includes an aiming guide used to assist an archer in aiming the arrow.

Abstract: A pointer instrument has two instrument mechanisms arranged independently of one another on a printed circuit board such that the printed circuit board in between the two instrument mechanisms. Each of the instrument mechanisms act on an associated pointer. To minimize the height between the instrument mechanism and the pointer, the printed circuit board is arranged between the two instrument mechanisms and the rotation axes of the two instrument mechanisms are arranged so that they are essentially concentric with respect to one another. The drive to the pointer from the lower one of the instrument mechanisms is provided by a bracket or through the printed circuit board and a hollow shaft for the upper instrument mechanism.

Abstract: A toy includes at least two articles. At least one of the articles has a movement or change of condition component which is caused to occur by magnetic attraction between magnets and/or magnetically attractive material via the respective articles when brought into proximity. The movement is created by a drive assembly provided in one of the articles and connected to a magnet or magnetically attractive material such that the movement force can be transferred between the articles via the magnetic attraction.

Abstract: A dual line protractor fixed to a central axis which has two housings, each housing having a spool with retractable lines, the housings and spools being rotatably attached to the central axis. The spools and housings rotate independently of each other on the central axis. The lines can be extended from the spools and the tips of the lines are attached to anatomical landmarks on first and second body members. The protractor is placed on a joint between the first and second body members. The lines extend from the spools and housings over degree marks on the protractor. The difference between the degree marks provide the angle between the body members at the joint. The application of the dual line protractor for these measurements is simple and rapid, requiring only a few minutes, so that the range of motion of several joints with several repeat measurements can be performed in a relatively short period of time.

Abstract: The invention provides a circularity and cylindrical shape measuring device that can decrease the measurement errors generated due to the weight of a measured workpiece.

Abstract: A structure and associated method to accurately read an encoder tape in an encoder system. The encoder system comprises, a read head, a shoe structure adjacent the read head, and an encoder tape. The encoder tape is adapted to be read by the read head. The shoe structure is adapted to locally support the encoder tape and locally dampen a vibration of the encoder tape as the encoder tape is read by the read head.

Abstract: A device for providing assistance in measuring the size of the foot. The foot gauge has a foot support plate having a single graduated scale per foot; a transverse first bearing face for the heel; a longitudinal second bearing face for the inside of the foot; and a moving assembly comprising a “transverse” first abutment for coming into contact with the front end of the foot, at the toes, and a “longitudinal” second abutment for coming into contact with the outside of the foot, and a measurement identifier member the size on the graduated scale. The moving assembly moves in a rectilinear or curved direction that is oblique relative to the longitudinal second bearing face, e.g. at an angle a, in its rectilinear portion, that lies in the range of 13° to 20°, and is preferably equal to 14.3°.

Abstract: The present invention relates to an environmentally friendly beacon or light for illuminating a pole-mounted, halyard-hoisted flag, banner, pennant or the like that has a luminous source located in a cover, is mounted on top of the pole, and is capable of continuously directing a narrow beam of light toward the flag, banner, pennant or the like as the wind blows the same around the pole. The flagpole beacon of the present invention is designed to replace the knob of an existing pole and may be used on poles having either an internal halyard configuration or an external halyard configuration.

Abstract: A bow sight system includes a bow sight assembly adjustably mounted to a base plate. The bow sight can include a conventional forward sight, such as a pin sight and a V shaped rear sight. Sighting through the V shaped rear sight groove will allow the archer to see the forward sight if the bow and archer are in proper alignment. A misalignment will cause the groove to obscure the archer's view of the forward sight preventing a misaligned shot. Unlike prior art peep sights, the V groove rear sight allows the archer to have an almost unlimited view of the target field such that the archer can quickly acquire a target. Illuminated alignment marks positioned on either side of the V groove ease the archer's ability to aim in low light conditions. The rear sight can also obscure unused pins of a multiple pin front sight and can also give an indication of target distance based on the number of pins of a multiple pin system visible.

Abstract: A method for improving the measurement accuracy of a portable coordinate measurement machine which comprises an articulated arm having jointed arm segments is presented. This method includes sensing deformation of a portion of the articulated arm when the arm is placed under a load, this deformation causing an error in the measurement made by the CMM, and correcting such error in response to the sensed deformation.

Abstract: A flag pole mounted unfurling device is installed on a flagpole and rotates to minimize the unwanted furling of the flag. The device includes a lower swivel, an upper swivel, and a baton that extends between the lower swivel and the upper swivel to retain the two swivels in alignment and properly separated. The upper swivel and lower swivel are free to rotate around the axis of the pole while the baton serves to couple the upper and lower swivels together, both rotationally and longitudinally. The entire assembly is longitudinally retained on the pole by an upper collar and a lower collar and minimizes the unwanted furling of a flag through ‘dynamic instability.

Abstract: A guidance marker for utilization with a fibrous web surface and providing an individual with a safe egress to an exit. The guidance marker includes a base carrying an indicator surface and at least one lock pin. The indicator surface is identifiable in the absence of normal lighting. The lock pin secures the base to the fibrous web surface.

Abstract: A leveling rod and a method of surveying utilizing the disclosed leveling rod are disclosed. The leveling rod comprises an elongated shaft and at least one tape with measurement graduations affixed longitudinally to the elongated shaft. The leveling rod also comprises an elongated side member slidably coupled with the elongated shaft, the elongated side member being extendable downwards. A stencil and an indicator are also included in the leveling rod. The stencil is attached to the bottom end of the elongated side member and is used to mark a surface. The indicator is attachable to the elongated side member and includes a pointer that points to the measurement graduations on the at least one tape. The indicator can slide longitudinally along the elongated side member until a predetermined position of the indicator is reached. The leveling rod further comprises a two threaded fasteners.

Abstract: A split axle assembly for obtaining gage measurements of a track including a first wheel with a first split axle, a second wheel with a second split axle, a first bearing for rotatably receiving the first split axle, and a second bearing for rotatably receiving the second split axle, the first bearing and the second bearing being positioned inboard between the first wheel and the second wheel. In one embodiment, a sliding barrel device is provided. In another embodiment, the first bearing is received in a first bearing body and the second bearing is received in a second bearing body so that they are axially movable relative to one another. At least one linear guide is provided to allow axial movement of the first bearing body and the second bearing body relative to one another.

Abstract: A touch sensor using a Hall IC is provided. To this end, in a cantilever mechanism 15 of a parallel link by two plate springs 16, a coupling member 18 on the fixed side is fixed to a supporting block 24 which penetrates through the center of a plate spring 16 on a lower side and uprightly provided on a pedestal 22. A movable portion 28 on the free end side is a lightweight coupling member 19 provided by bend-processing an aluminum thin plate, to which a rare-earth magnet 25 is adhered. An elastic part 20a of a Hall IC supporting member 20 is fixed to the coupling member 18 on the fixed side, and a rigid part 20b with a rib 17a is supported by an adjusting rod 36 to fine-adjust relative position of a Hall IC 26 provided on the free end with respect to the magnet 25.

Abstract: A method an apparatus for measuring the depths of many fine holes formed in the surface of a sample by etching. Positional information on a plurality of hole patterns is acquired by scanning, with a stylus, the surface of the sample in which the hole patterns are formed by etching. The depths of the plurality of hole patterns are measured by scanning, with the stylus, bottom faces of the plurality of hole patterns and the surface of the sample in the respective vicinities of the hole patterns on the basis of the positional information that has been acquired. Information on distribution of the depths of the plurality of hole patterns is displayed on a screen on the basis of information on the measured depths of the plurality of hole patterns and the positional information on each of the hole patterns.

Abstract: The present invention relates to a heat generator including a central shaft, an elastic body formed to be a predetermined thickness at a circumference of the central shaft, a conductor layer formed to be a predetermined thickness at a circumference of the elastic body, and a second elastic body formed to be a predetermined thickness at a circumference of the conductor layer, and an apparatus including a magnetic field generator which provides a magnetic field such that the conductor layer of the heat generator can generate heat, and a pressure member which is provided along the central shaft of the heat generator, and applies pressure that deforms the elastic body layer by a predetermined amount to a predetermined position of the central shaft or the heating generator.

Abstract: A linear scale attachment device for holding and securely attaching a linear scale on an object to be measured is disclosed. The device includes an aluminum base formed with a holding groove having a larger opening than the width of a linear scale that is fitted in this groove, and a retainer for preventing the linear scale fitted in the holding groove from falling off. The base is permanently attached to the object at one location in the lengthwise direction, and resiliently attached at one or more other locations such as to be pressed in the X and Y directions using a cantilever plate spring. While using an aluminum base, the attachment device allows easy attachment and maintenance of the scale and relieves the effect of thermal stress caused by a difference in the thermal expansion coefficient between the aluminum base and the object.

Abstract: An alarm Abstract is provided for a bathtub and includes a method for attaching to a wall of the bathtub, one being a suction cup. A float assembly is supported by the alarm housing to engage the alarm system. To use the alarm apparatus of the invention in a bathtub, one of the three attachment methods is used to secure the housing to the wall of the bathtub. The float is adjusted to the desired height. Water is added to the bathtub, which turns a waterwheel, and when the water level lifts the float assembly a sufficient amount, the alarm system is activated and sounds a warning alarm. The alarm system includes a waterwheel that's is spinning, a thin flat plastic bar that is attached to the float. The float raises the thin plastic bar into the waterwheel thus making a loud clicking sound.