Abstract: In some embodiments, a computer system facilitates depth conflict mitigation for a virtual object that is in contact with one or more physical objects in a three-dimensional environment by changing visual properties of one or more portions of the virtual object. In some embodiments, a computer system facilitates depth conflict mitigation for a virtual object that is in contact with one or more physical objects in a three-dimensional environment by displaying the virtual object in a virtual environment within the three-dimensional environment. In some embodiments, a computer system facilitates depth conflict mitigation for a virtual object that is in contact with one or more physical objects in a three-dimensional environment by variably changing visual properties of one or more portions of the virtual object and/or by variably displaying the virtual object in a virtual environment based on one or more characteristics of the depth conflict.

Abstract: A coupling to attach an impeller of a compressor to a shaft of an electric motor. The coupling has a coupling body that is attached at a first of the ends thereof to the impeller and at the opposite second end, to the motor shaft. The coupling body has a deformable section between the first and second ends of the coupling body. The deformable section is configured such that under an unbalanced loading exerted against the coupling body upon a failure of the impeller, the deformable section will permanently deform without the ultimate strength of a material forming the coupling body being exceeded and prior to a permanent deformation of the shaft. In such manner, the electric motor is protected from damage upon a failure of the impeller.

Abstract: A coupling to attach an impeller of a compressor to a shaft of an electric motor. The coupling has a coupling body that is attached at a first of the ends thereof to the impeller and at the opposite second end, to the motor shaft. The coupling body has a deformable section between the first and second ends of the coupling body. The deformable section is configured such that under an unbalanced loading exerted against the coupling body upon a failure of the impeller, the deformable section will permanently deform without the ultimate strength of a material forming the coupling body being exceeded and prior to a permanent deformation of the shaft. In such manner, the electric motor is protected from damage upon a failure of the impeller.

Abstract: Insulation board capable of bearing a load without significant loss of insulating capacity due to compression, produced by a method wherein the board is made in compliance with specified conditions of time, temperature and pressure.

Abstract: A thermal insulation panel which is lightweight, load bearing, accommodates thermal stress, and has excellent high temperature insulation capability comprising high performance insulation between thin metal walls supported by high density, high strength glass pegs made in compliance with specified conditions of time, temperature and pressure.

Abstract: A high density peg which can support a large load and exhibits excellent thermal resistance produced by a method wherein the peg is made in compliance with specified conditions of time, temperature and pressure.

Abstract: A heat exchanger constructed from a plurality of stacked modules, each module having closed channels for high pressure flow and fins extending vertically up and/or down from the channels which form open channels suitable for low pressure flow when the modules are stacked parallel along their length.

Abstract: A second order digital filter utilizing six processor operations, two add instructions, two shift instructions and two store instructions. No multipliers are required. The filter is used as a digital filter in a servo loop having a Z transform of, G(Z)=4 (1-Z.sup.-1)+Z.sup.-2.

Abstract: Extruded plastic trunking to cover, conceal, and protect cables or conduits on the surfaces of building walls, comprising a base strip with a channel groove to accommodate the conduit or cable and an overlying resilient curved cover strip arranged to make a snap fit with the base, having sloping flanks which extend close to the wall. The cover strip may be transparent and provided with a lining strip of the same pattern and color as the wall surface.

Abstract: A navigational system for spacecraft use utilizes two telescopes gimbaled on a common axis to measure the scalar angle between a star and the lunar limb. The common axis is the axis of rotation of a momentum wheel carrying a narrow mirror. When each tracker is aligned at its respective target, the mirror passes through the respective optical axis of the telescopes. Timing sensors record the passage to measure the angle and its complement. The phase locked loop used to maintain precision angular rotational rates of the momentum wheel is disclosed such that approximately 20 statistical measurements of the included angle per second can be made.

Abstract: A navigational system for spacecraft utilizes two telescopes gimbaled on a common axis to measure the scalar angle between a star and the lunar limb. The common axis is the axis of rotation of a momentum wheel that carries a light source on it for the generation of timing pulses. This source enhances signal strength by addition of the source generated ray to that received by each telescope. The entire collimated light source is carried by the wheel and the beam is divided equally between telescopes. The collimated rays are imaged by the telescope assembly and this image sweeps across sensor assemblies to generate discrete timing pulses. The trackers employ closed-loop servo systems to center on respective targets and utilize torque motors to drive the trackers relative to the measurement head case.