Abstract: A surgical lamp includes a thermoplastic reflector which reflects visible light but passes infrared radiation. The reflector is fabricated from molded polyetherimide plastic resin. A dichroic coating is vacuum deposit directly upon the front surface of the reflector.

Abstract: A power supply provides high voltage for a grid controlled x-ray tube. In the supply an oscillator generates a high frequency signal which is amplified and transformed to kilovoltage. A voltage multiplier increases the kilovoltage to a potential suitable for the tube. The voltage multiplier includes a bank of series capacitors which tends to maintain a constant high voltage when the tube is not conducting.

Abstract: A system and materials for making oral impression trays in situ is disclosed, including a transporter member, tray member, and spacer member. Materials are disclosed for use as mold materials for polymerization in situ against or in close proximity to living tissue without high exothermal polymerization and its attendant discomfort and damage and with reduced polymerization shrinkage to produce a more accurate and stable custom tray.

Abstract: A self-aligning solar energy collector which maintains its attitude facing the sun during the sun's daily and seasonal changes. Tension cables hold the collector in position, and are positioned so as to be out of equilibrium when off-axis solar radiation heat one cable more than another.Self-alignment is in both horizontal and vertical planes. Multiple collectors are also disclosed in a ganged or master-slave relationship.

Abstract: Disclosed is a real floor for a lauter tun comprising a plurality of elongated linear troughs, each trough extending unobstructed across the bottom of the vessel and each forming a relatively shallow upward opening V-shape. The elements making up the floor are shaped to provide the lauter tun floor with a circular profile.

Abstract: One or more dental instruments are connected by flexible supply lines to a dental unit. A retractor is arranged to pull an extended instrument back to the unit upon being triggered. The dental instrument carries a magnet. A magnetic sensor is located near the retractor. When the instrument is passed near to sensor a signal activates the retractor which pulls in the instrument.

Abstract: The present invention provides a hot spark that is more-or-less uniform over the combustion chamber volume in a liquid oxidant/liquid fuel combustion engine. In addition, heat losses are reduced and low wear/low friction surfaces are provided. Flame sprayed ceramic coatings are utilized to provide all embodiments of the present invention.

Abstract: Certain reciprocating piston internal combustion engines have liquid oxidant and liquid fuel injection schedules that are controlled by a microprocessor that acts upon pre-stored data and upon engine sensor output data. For these engines, the present invention provides a pressure sensor in the working cylinder combustion chamber whose output controls the injection initiation times.

Abstract: Certain applications of liquid fuel, storable liquid oxidant internal combustion engines require the oxidant to be formed as needed and that only minimal amounts of oxidant need be stored.

Abstract: A combination wind rotor and output energy transducer to provide output energy from the system and to automatically regulate the wind rotor at all wind velocities to thereby allow the wind rotor to operate at a constant tip speed/wind velocity ratio and at its maximum efficiency. The energy transducer is a combination of positive displacement hydraulic pump and an orifice in the hydraulic system to generate heat. Overspeed protection is afforded by maximum hydraulic loading of the wind rotor in extreme wind conditions.A wind rotor steering system by which the wind rotor is oriented into the wind at all wind velocities. The wind rotor restoring torque is automatically in balance with its reaction torque.

Abstract: An auxiliary kinetic energy recovery system is provided for a vehicle with a rotary sliding vane engine including a compressor, a combustion chamber and a motor in which the braking is done by connecting the rotor of the compressor to a wheel and braking rotation of the rotor by controlling the gas flow through the rotary sliding vane compressor, such as by varying the outlet to increase the pressure ratio. This eliminates the conventional friction brakes. The compressed air generated during braking is fed to a surge tank for later use in operating the vehicle engine, thus recovering a portion of the kinetic energy of the vehicle. Additional amounts of kinetic energy are recovered by means of a closed circuit compressible gas circulating system which comprises an auxiliary compressor actuated by the same shaft as that attached to the engine compressor.

Abstract: A fluid system for controlling fluid temperatures and transferring heat from a solar energy collector to a point-of-need heat exchanger, remote from the collector, from which heat is discharged for use. Heat is collected by the fluid in the solar collector, which fluid flows by natural circulation into an accumulator, connected in a continuous heat accumulation loop with the collector. A self-energized forced-convection heat transfer loop leads from the accumulator to the lower discharge heat exchanger and back to the solar collector.The fluid system blanket pressure, i.e. the pressure at the high point of the system, is maintained at a level such that the fluid vaporizes in the temperature range of the solar collector. Vapor energy is extracted from the blanket vapor in the accumulator to energize an injector pump in the forced-convection heat transfer loop to motivate the heated fluid through the loop from the accumulator to the point-of-need heat exchanger for practical use.

Abstract: A merchandise display package having transparent and adhesive properties for convenient display, protection, and stacking of soft merchandise.

Abstract: A constant pressure, Brayton cycle gas turbine method and apparatus including a combustion chamber and a turbine and using a hot-cool operating cycle comprising a hot phase alternating with cool phase. Gas is continuously fed to the combustion chamber and from the combustion chamber to the turbine. During the hot phase all of the gas fed to the turbine is hot. The gas temperature during the hot phase is higher than the turbine could withstand in a continuous burn mode. However, the time period of the hot phase is less than the time it would take for the turbine blades to "soak" to the high temperature of the hot gas. This provides a high combustion temperature and high efficiency at all times, eliminating the part-load efficiency loss of the prior art, and also eliminating the need for high temperature materials as well as the prior art compressor requirements for large amounts of air. The gas turbine can be of the closed cycle or open cycle type.

Abstract: A receptacle for holding a quantity of litter material and for the deposit of refuse. A sifting screen is mounted on mechanism for movement through the bed of litter to sift therefrom the accumulated refuse, leaving the litter bed for further use. In another form, the litter container is configured to be tilted to pass the litter through a centrally placed sifting screen.

Abstract: A mount and mechanism for a symmetrical zoom lens in which the outer lens elements are stationary relative to the lens housing. The inner elements on one side of the center move in unison on one shaft driven in symmetrically opposite direction relative to another shaft on which the inner lens elements on the other side of the lens center move.The entire zoom lens housing is mounted for sliding movement, between object and image, on a carriage which is in turn mounted for movement along a stationary frame. The frame includes an iris cam which is in engagement with an iris cam follower which in turn is connected by a linkage to the lens iris to control the lens aperture in response to the axial position along the carriage of the lens housing. The maximum opening of the lens iris is at the highest magnification and the minimum opening of the lens aperture is at the lower magnification.

Abstract: A low pressure sodium vapor lamp including a sodium vapor discharge tube within an outer envelope. The outer envelope is partially coated by a light reflector defining a light transmission aperture for desired directional light output. The outer envelope is additionally coated with an infrared reflective coating defining a heat transmission aperture at a location separate from the light transmission aperture. The heat transmission aperture acts as a heat sink. The area of the inner discharge tube corresponding to the heat transmission aperture thus becomes the coolest portion of the discharge tube, the "cold spot" of the lamp where excess sodium is condensed.

Abstract: A low pressure sodium vapor lamp including a sodium vapor discharge tube and a light reflector partially surrounding the discharge tube and defining a light transmission aperture for desired directional light output. The light reflector is in tangential contact with the discharge tube on the surface thereof opposite to the light aperture. The contact between discharge tube and light reflector provides a thermal coupling for heat conduction from the discharge tube. The area of this thermal coupling thus becomes the coolest portion of the discharge tube, the "cold spot" of the lamp where excess sodium is condensed.

Abstract: A holographic spinner reconstructs a light spot to rapidly scan a narrow line on a suitable "write" surface to generate an image. The spinner is flexibly mounted to assume a high degree of uniformity in its perpendicularity relative to the axis of spin to minimize spot wobble. Alternatively, the spinner is itself a flexible material or floppy disk.Method of mounting the disk on a shaft using a setting compound during spinner rotation is also disclosed.

Abstract: A flat platen, rotating mirror scanning system is disclosed in which the angular velocity of the rotating mirror is continually varied from end to middle to end of scan to effect a constant speed of scan across the platen surface. This is achieved by providing a mirror drive arrangement which is the mechanical analog of the optical geometry. Conjugate distance changes inherent in flat platen scanning are compensated by a stationary "half-lens" adjacent to the rotating mirror.