Abstract: A method of establishing a cant sensitivity level for an optical sighting system for a shooting device, the method comprising: receiving a range measurement; establishing a cant sensitivity based, at least in part, on the range measurement; determining a cant of the shooting device relative to a vertical transverse axis of the main optical axis of the optical system; activating, when the cant of the shooting device exceeds the cant sensitivity, an electronic cant indicator structured to provide an indicator signal to a user; and deactivating the electronic cant indicator when the cant of the shooting device does not exceed the cant sensitivity.

Abstract: A position sensing apparatus includes a position sensor, a voltage/current detector, and an alarm. The position sensor is coupled to the body part and includes a capsule, and first and second electrodes. The capsule has an interior volume configured to contain a liquid with a first density, and a contact member having a second density different from the first density. The first and second electrodes are fixed to the capsule to define a sensor meridian that is coupled to a tilt angle of the body part, with each electrode having a distal portion in the interior volume of the capsule, and the distal portions being configured to form a circuit with the liquid or the contact member. The voltage/current detector is configured to detect a change in a state of the circuit, and the alarm is configured to respond to the voltage/current detector.

Abstract: An angle-indicating tube bender apparatus, system, and method is disclosed. Namely, the presently disclosed subject matter provides a tube bender comprising an angle indicator device that is used to measure and indicate the angle of the tube during the bending process. The angle indicator device can be, for example, a digital protractor, digital angle gauge, or digital angle locator. Further, the tube bender may comprise laser technology that is used to project guiding lines or markers from the bender head for guiding the user. In one example, the guiding lines or markers are projected in a crosshair beam pattern that can be used to ensure the accuracy of one bend with respect to another bend.

Abstract: A cant indication apparatus includes a spirit level having a first and second surface, said spirit level containing a first fluid, said first fluid having at least one of a first light transmittance and absorbance, and a second fluid forming a bubble in said first fluid, said second fluid having at least one of a second light transmittance and absorbance, said bubble position indicating orientation. The apparatus further includes a light receiving optical fiber having a light receiving end and a spirit level connection end, said optical fiber spirit level connection end connected to said first surface of said spirit level whereupon said spirit level bubble is nearest said spirit level connection end of said light receiving optical fiber when said spirit level is in an uncanted orientation.

Abstract: Disclosed is a feeding-bottle sterilization reminding method, comprising the following steps: acquiring the temperature information of a current aqueous solution, and performing temperature compensation according to the temperature information; acquiring the resistance value of the aqueous solution after temperature compensation, and judging if the resistance value is within a preset threshold value, and if yes, reminding users to change water. The feeding-bottle sterilization reminding method provided in the invention is easy to operate, by collecting the water quality data in a real-time manner and comparing them with the database, and it will give a warning when the water quality is found unacceptable, to remind users to change water timely. In addition, a feeding-bottle sterilization reminding device is further disclosed in the invention.

Abstract: The present invention concerns a control device for an electrical circuit integrated on a substrate made of polymeric material, incorporating carbonaceous conductive structures which define at least one track having improved electrical conductivity properties with respect to the substrate, which control device includes an operating area adapted to be acted on by a user and having a pressure-deformable structure adapted to disturb the electrical properties of the track by a piezo-resistive effect, wherein the conductive track includes at least one linear segment which has a winding progression at the operating area.

Abstract: The present invention relates to a liquid multilayer capacitive micro inclinometer, comprising at least two pairs of differential electrodes, each pair positioned in a same plane; at least one common electrode with a portion positioned in the plane of each pair of differential electrodes. The differential electrodes and the common electrode are provided in a sealed chamber, in which an immersing liquid is filled. The shape of the differential electrodes forms a sector of a circular plane. The inclinometer may further integrate a reading circuit. The present invention also discloses preparation method for the invented inclinometer.

Abstract: A device for maintaining a flag in a desired position, and comprising a position transducer is disclosed. A support mounts the position transducer on a flagstaff. An alarm indicates a deviation in the position of the transducer from the desired position. The alarm has an audio output. The audio output of the alarm optionally indicates the direction of the deviation whereby a user may correct the position of the flag. The position transducer may comprise a central conductive member and a plurality of contacts surrounding that central conductive member. More particularly, the central conductive member may be a conductive ball resting on a concave conductive electrode.

Abstract: Fabrication methods are provided for an electrolytic tilt sensor which includes a containment envelope defining an interior space; at least first and second electrodes disposed along, and in contact with, a first interior surface portion of the containment envelope, said first and second electrodes being spaced apart from each other to define a gap between respective opposing edges of the first and second electrodes; at least a third electrode disposed along and in contact with a second interior surface portion of the containment envelope opposite said first interior surface portion; an electrolyte solution at least partially filling the interior space of the containment envelope to provide a bubble; and means for hermetically sealing the containment envelope.

Abstract: The present technical solution provided allows it to determine true meridian of any movable object. This solution is based on determining true meridian by zero value of linear acceleration induced created by changing the projection of the vector of linear velocity, caused by rotating any heavenly body, in particular, the terrestrial globe. The determination is implemented in compact variant only by the devices located on the movable object without any necessity of using induced radiations, quickly and accurately without any necessity of knowing the coordinates of location and the speed of movement irrespective of weather conditions, transverse accelerations, temperature changes and external magnetic fields influence.

Abstract: Fabrication methods are provided for an electrolytic tilt sensor which includes a containment envelope defining an interior space; at least first and second electrodes disposed along, and in contact with, a first interior surface portion of the containment envelope, said first and second electrodes being spaced apart from each other to define a gap between respective opposing edges of the first and second electrodes; at least a third electrode disposed along and in contact with a second interior surface portion of the containment envelope opposite said first interior surface portion; an electrolyte solution at least partially filling the interior space of the containment envelope to provide a bubble; and means for hermetically sealing the containment envelope.

Abstract: The transmitter for projecting a beam of laser light includes a source of a beam of laser light, and a projection arrangement for directing the beam of laser light at a selected grade. The transmitter further includes a temperature sensor for detecting the temperature of said transmitter, and a temperature correction circuit, including a look-up table, responsive to said temperature sensor, for adjusting said projection arrangement in dependence upon offset grade values that are stored in said look-up table for a plurality of transmitter temperatures. These offset grade values are separately determined on an empirical basis for each transmitter, such that temperatures induced errors in the direction of the beam of laser light are compensated.

Abstract: The tilt detector has a container with a receptacle located therein. The receptacle has open and closed ends. In its normal, upright orientation, a first mass is located inside of the receptacle. A second mass is located adjacent to the open end of the receptacle. When the receptacle is in its normal, upright orientation, the second mass is located above the receptacle and blocks the exit of the first mass from the receptacle even when the first mass moves in response to vibration frequencies to which the first mass is sensitive. When the receptacle is tilted beyond a predetermined angle, the second mass moves from its blocking position so as to allow the first mass to exit the receptacle. A tilting indication occurs when the first mass has exited the receptacle.

Abstract: A method of sensing tilt includes applying an electrical signal, such as voltage, current, a constant signal, or a time-varying signal to at least one electrode of a first set of electrodes and measuring an electrical parameter using at least one electrode of a second set of electrodes. The electrodes are disposed in a conductive medium within an envelope. The electrical parameter represents tilt relative to a first axis. The electrical roles of the first and second sets of electrodes are reversed to determine tilt relative to a second axis. No more than four electrodes are used to determine tilt relative to two axes. A tilt sensor includes an envelope, conductive medium in the envelope, and four electrodes. A method of making a tilt sensor includes providing at least four electrodes, forming an envelope to receive at least a portion of the electrodes, placing a conductive medium into the envelope, and sealing the conductive medium in the envelope.

Abstract: The transmitter for projecting a beam of laser light includes a source of a beam of laser light, and a projection arrangement for directing the beam of laser light at a selected grade. The transmitter further includes a temperature sensor for detecting the temperature of said transmitter, and a temperature correction circuit, including a look-up table, responsive to said temperature sensor, for adjusting said projection arrangement in dependence upon offset grade values that are stored in said look-up table for a plurality of transmitter temperatures. These offset grade values are separately determined on an empirical basis for each transmitter, such that temperatures induced errors in the direction of the beam of laser light are compensated.

Abstract: Disclosed is an orientation device that may be deployed in a mechanical assembly such as a surveillance camera or enclosure to positively determine the physical orientation and/or attitude (tilt), or any change in such physical orientation and/or attitude, of either the camera or the enclosure, and report that information electronically. The invention includes a sensor that is triggered by the movement of a weighted flag along a shaft caused by gravity or gravity in conjunction with the operation of a spring. As the invention is rotated through 360°, the force of gravity and force of the spring are exerted on the weighted flag, causing it to move along the shaft as the assembly is rotated. Each movement by the flag is detected by the sensor which sends an electronic signal indicating that a predetermined point has been reached. Multiple assemblies may be used, offset from each other, to provide additional and more precise position information.

Abstract: An electrolytic tilt sensor is disclosed which comprises a containment envelope having a metallic container and a header, the envelope defining a chamber and having at least one pair of apertures, an electrolytic solution partially filling the chamber, and at least one pair of electrodes, each electrode including an electrically active, transverse portion positioned within the chamber in a general horizontal alignment with one another defining a tilt axis, and a lead portion extending to the exterior of the envelope through the respective aperture. The tilt sensor may further include a sealing material disposed in each aperture of the providing a substantial fluid-tight seal about the respective electrode.

Abstract: A miniature, low cost, angle-sensing device is disclosed. The device comprises a tilt-actuated assembly having a non-mercurial electrically resistive fluid that bridges conductive members when the device is tilted to a desired position to initiate a signal for electronic devices. Embodiments include multi-axis and multiple angle position sensors with or without alert signal means for inverted orientation.

Abstract: The transmitter for projecting a beam of laser light includes a source of a beam of laser light, and a projection arrangement for directing the beam of laser light at a selected grade. The transmitter further includes a temperature sensor for detecting the temperature of said transmitter, and a temperature correction circuit, including a look-up table, responsive to said temperature sensor, for adjusting said projection arrangement in dependence upon offset grade values that are stored in said look-up table for a plurality of transmitter temperature ranges. These offset grade values are separately determined on an empirical basis for each transmitter, such that temperature induced errors in the direction of the beam of laser light are compensated.

Abstract: The transmitter for projecting a beam of laser light includes a source of a beam of laser light, and a projection arrangement for directing the beam of laser light at a selected grade. The transmitter further includes a temperature sensor for detecting the temperature of said transmitter, and a temperature correction circuit, including a look-up table, responsive to said temperature sensor, for adjusting said projection arrangement in dependence upon offset grade values that are stored in said look-up table for a plurality of transmitter temperatures. These offset grade values are separately determined on an empirical basis for each transmitter, such that temperatures induced errors in the direction of the beam of laser light are compensated.

Abstract: An orientation sensor especially suitable for use in an underground device is disclosed herein. This orientation sensor includes a sensor housing defining a closed internal chamber, an arrangement of electrically conductive members in a predetermined positional relationship to one another within the chamber and a flowable material contained within the housing chamber and through which electrical connections between the electrically conductive members are made such that a comparison between an electrical property, specifically voltage, of a first combination of conductive members to the corresponding electrical property of a second combination of conductive members can be used to determine a particular orientation parameter, specifically pitch or roll of the sensor.

Abstract: A arcuate resistive sensor element is imprinted upon a ceramic substrate forming a wall of a ceramic body in which an electrolyte, advantageously silver nitrate dissolved in a mixture of methanol, water and butanol, is sealed. To avoid the effects of electroplating, an AC exciting voltage is applied between the ends of the sensor element which is bridged by a discharge resistor whose resistance is much lower than the internal resistance of the sensor element so as to dissipate any polarization caused by asymmetry of the voltage supply. A signal output is taken from a midpoint of the sensor element which is always immersed in the electrolyte so that the effect of any leakage current is minimized. Linearity of output with change in the tilt angle achieved with an illustrative embodiment has been measured at better than 99.9% in tilt angle range of −50 to +50 degrees.

Abstract: An electrolytic tilt sensor and a method of assembling the tilt sensor. The tilt sensor includes a metallic envelope comprising a metal container and a metal header welded to the enclosure, hermetically sealing the envelope. The envelope defines a chamber that contains an electrolytic solution and a plurality of electrodes. The electrodes extending through the header from outside of the envelope into the chamber. Each electrode is located in a separate aperture within the header and is insulated from the envelope by an insulator located between the electrode and the header. The method of assembling the tilt sensor includes the steps of placing the electrolytic solution into the container through an opening, engaging the header with the opening and welding the container and header to one another to hermetically seal the envelope.