Abstract: A link chain useful for transmission and conveyor purposes in which the links are interconnected by flexible strip members which accommodate relative angular movement of each link with respect to the strip members and links without need for pivot pins and without frictional movement between adjacent links.

Abstract: A reinforced, pneumatic tire and method of manufacture in which the tire body is formed in at least two sections each including a side wall and a plurality of annular bands each including an annular reinforcing belt embedded in an elastomer. The tire sections are assembled in a mold with the annular bands of each section interleaved with the annular bands of another section and the elastomer is cured to form an integral tire body. The tire may be formed of two reinforced sections with the interleaved bands forming the annular tread section of the tires, or as three reinforced sections, including two sections each including a side wall and annular bands and a connecting section including annular bands with reinforcing belts which are interleaved with the annular bands of the other two sections to form a tread section. An annular, elastomeric tread section may be formed separately and bonded around and to the annular bands of the reinforced sections.

Abstract: The present disclosure is directed to a non-pivotal modular conveyor belt and modular links therefor wherein a belt is made up of modules interfitted and joined by a non-pivotal connection passing laterally through adjacent interfit modules at their ends and wherein the module has a flexible member joining a pair of link ends. When assembled with the non-pivotal connection through the interlocked link ends with the adjacent flexible members in abutting relationship the point of abutment of the flexible members may be fused so that there is no open joint into which foreign matter may enter requiring cleaning.

Abstract: Apparatus for borehole surveying employing remote reading electro-optical sensors for providing digital signals represenatative of azimuth and multi-axis inclination for direct transmission to the surface for recording or use.

Abstract: A magnetic compass in which the compass magnet is an electromagnet energized only when in a horizontal disposition to provide a correct heading indication without error due to tilting of the compass magnet.

Abstract: A multiple link conveyor having identical flat links each composed of interleaved identical sheet members, each link being interleaved with adjacent links for pivotal movement of adjacent links in the plane thereof.

Abstract: An automatic piloting system for the automatic steering of a marine or other vessel along an intended course in which a digital signal representing an intended course is processed to provide rudder commands for steering the desired course.

Abstract: A system and method for interrogating a plurality of data gathering devices for actuation of selected ones from which data is received. Transducers are typically remotely located from the interrogating and receiving apparatus and are connected via a single two-conductor path over which power is conveyed to the transducers and data signals conveyed between the transducers and the receiving apparatus.

Abstract: Method and apparatus for providing automatic correction of deviation errors in a magnetic compass. Data representing deviation corrections for respective compass headings are stored in memory and in response to a digital signal from the magnetic compass representing an indicated heading, the corresponding correction is provided from memory to yield a output signal representing actual heading and corrected for deviation error.

Abstract: A solar energy concentrator having an array of horns each having converging reflecting surfaces which provide a multiple reflective path from a relatively wide entrance aperture exposed to incident solar energy and a smaller exit aperture from which intensified energy emanates. The energy received from the exit apertures of the horn array is of higher density than the incident energy density and can be used as heat or converted to electrical or other form of energy for use.

Abstract: A movable link conveyor having an elastomeric effectively continuous conveying surface capable of remaining substantially flat during movement of the conveyor through a curved travel path in the plane of the conveying surface.

Abstract: A chain link conveyor comprises modules pivotally connected to one another. Each module is designed to be molded as a unit, preferably of an organic plastic material and comprises a number of parallel, spaced links having end sections with aligned holes for snap-together pivot rods, and intermediate sections joined by integral cross members to form a rigid, supporting grid.

Abstract: A digital compass display readily movable to different intended mounting positions and including a multidigit numerical indicator mechanically and electrically connected to an end of an electrical cable and of a small size and configuration approximating that of the cable itself.

Abstract: A turbine engine provided within a hermetically sealed housing and operative as a closed system in response to applied solar or other thermal energy.

Abstract: A conveyor system employing a modular belt of the type described in U.S. Pat. No. 3,870,141 in which the upper surfaces of the modules are shaped to provide guide channels for the teeth of a conveyor comb as the belt passes over a wheel. Upper surfaces of the module and/or the comb teeth can be shaped to minimize the rise and fall of the belt relative to the comb as the belt passes over the wheel.

Abstract: A remote reading magnetic compass operative with only two electrical connections for both power and data purposes. The compass includes a disc which is photoelectrically sensed to provide output signals representative of compass heading and is supported by a gimbal assembly including pivots which serve as electrical terminals by which energizing power is supplied to the compass electronics and by which data is read out from the compass.

Abstract: An automatic piloting system for the automatic steering of a marine or other vessel along an intended course in which a digital signal representing an intended course is processed to provide rudder commands for steering the desired course.

Abstract: Method and apparatus for providing calibration of automatic deviation-correction circuitry for a magnetic compass. Data representing deviation-corrections for respective compass headings are derived by comparing signals representative of the actual heading of the compass with the compass output signal at a plurality of headings to provide corresponding corrections which are stored in a memory to produce an output signal representing actual heading and corrected for deviation error.

Abstract: 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 damping liquid with positive buoyancy and which provides a selected range of tilt without gimbal mounting.

Abstract: A magnetic compass system in which an output signal indication is produced of true heading. An electronic navigation receiver such as a Loran or Omega receiver is employed to provide sequential indications of present position which are processed to produce a signal representing the average course made good for a selected heading. The course made good signal is processed with a signal indication of magnetic compass heading to correct for deviation and variation errors and yield an output signal representing true heading.