Abstract: Automatic focusing apparatus comprising a beam focusing assembly disposed for directing through an axially spaced focal spot a scanning light beam having a periodic translational movement characterized by a first fundamental frequency component, a focus evaluating assembly disposed for detecting adjacent the focal spot a periodic translational movement of the focused beam characterized by a fundamental frequency component which is compared with said first fundamental frequency component to determine the relative phase relationship, and a target positioning assembly disposed for automatically positioning a selected surface of a target at the focal spot in accordance with the periodic translational movement of the focused beam and said determination of relative phase relationship.
Abstract: An X-ray collimator comprising an X-ray shielded enclosure having aligned entrance and exit apertures for permitting passage of an X-ray beam, the exit aperture having a generally rectangular configuration defined by edges of two orthogonally disposed pairs of opposing rotatable exit shutter elements. Each of the exit shutter elements has a generally semi-cylindrical configuration and is concentrically disposed about a respective axis of rotation. Each pair of semi-cylindrical exit shutter elements is mounted for opposing rotatable movement within the other pair of semi-cylindrical exit shutter elements. The entrace aperture of the housing may be defined by two orthogonally disposed pairs of opposing shutter plates, one pair thereof being directly linked to an associated pair of semi-cylindrical exit shutter elements for corresponding movement therewith.
Abstract: A fluoroscopic table having a table top for supporting a patient for irradiation by X-rays generated by a source located beneath the table top, which X-rays are directed through the table top and patient to a receptor located above the patient, the receptor comprising a heavy image intensifier and spot filming device, for example, movable longitudinally and transversely of the table, and the X-ray source comprising a heavy X-ray generator and collimator which are movable as a unit longitudinally and transversely of the table for constant alignment with the receptor, the mountings for the receptor and source being separate from one another and the movements thereof being individually controlled by servo mechanisms whereby precise alignment is automatically achieved and maintained.
Abstract: An audio connector having a stationary member adapted to be mounted on a chassis or panel and a detachable member adapted to be interfitted with said stationary member. The stationary member has a post-like conductive housing disposed within a hollow collar member. The hollow collar member has an intermediate escutcheon plate for mounting the collar member to the chassis or panel. The stationary member has a plurality of female conductive pin receptacles for mating with male pins of the detachable member. The stationary member includes a unitary resilient latch having an elongated tongue-like conductive portion and a pair of conductive wing-like members offset from the elongated conductive portion.
Abstract: An actuator button assembly for a push-button switch having a reciprocally movable actuator shaft, the button assembly including a shell mounted on the shaft and having an end surface lens, a rotor carrying a peripheral array of position indicating panels and mounted within the shell for rotation about an axis substantially parallel with said lens, the rotor having an end surface provided with a radially extending slot, and a fixed arm extended within said slot for converting reciprocal movement of the actuator shaft into rotary movement of the rotor to align a respective one of said panels with said lens for indicating the operative condition of the switch.
Abstract: An X-ray tube comprising a tubular envelop having rotatably mounted therein an anode target disc provided with a peripheral rim surface wherein a focal track groove is disposed, the groove including a focal spot area spaced from an electron emitting cathode which is associated with a beam-forming structure including an X-ray transparent window in a portion of the envelope aligned with the focal spot area.
November 23, 1979
Date of Patent:
June 22, 1982
The Machlett Laboratories, Incorporated
William P. Holland, Donld F. DeCou, Jr.
Abstract: An X-ray tube including a tubular envelope having therein an anode target provided with a surface portion made of X-ray emissive material and with another surface portion coated with amorphous carbon material, and an electron emitting cathode disposed to beam electrons onto the surface portion of the target made of X-ray emissive material.
Abstract: An electron discharge device including a cathode ray tube having an evacuated envelope terminated at one end in a faceplate to which a transparent panel is bonded by an interposed adhesive layer of stabilized light-transmissive material comprising a mixture of epoxy resin and a hygroscopic curing agent having a predetermined quantity of water added thereto prior to mixing with the resin.
Abstract: An X-ray tube including a tubular envelope having therein an anode target provided with a surface portion made of X-ray emissive material and with another surface portion made of heat emissive material comprising at least one of the members from the group consisting of hafnium boride, hafnium oxide, hafnium nitride, hafnium silicide, and hafnium aluminide; and an electron emitting cathode disposed to direct a beam of electrons onto the anode surface portion made of X-ray emissive material.
Abstract: A solar collector of the tubular type comprising a solar energy transmissive outer tube encircling a solar energy converter inner tube disposed for having a flow of fluid directed longitudinally through it. The outer and inner tubes have respective opposing end portions sealed to one another and respective mid-portions radially spaced from one another for forming an interposed vacuum chamber. The sealed joints may include at least one flexible member disposed to compensate for differences in thermal characteristics of the inner and outer tubes. The inner tube is provided with an exhaust tubulation which communicates with the vacuum chamber for evacuating the chamber, and extends inwardly of the inner tube for producing turbulence in the flow of fluid to aid in the transfer of heat energy from the inner tube to the fluid.
Abstract: A switch device including a base having extended therefrom a bowed spring provided with a peak portion, and a slidable actuator having a cam-shaped surface urged against said peak portion of the spring, the cam-shaped surface having at least one detent portion disposed for releasably engaging said peak portion of the spring to provide a tactile indication of the actuator position relative to said base of the device.
Abstract: A source of X-rays encompassing a rotating target is provided with a detector of X-rays located outside a port of a housing of the source and positioned at or near a tangent line to the radiating surface for observing variations in the radiation intensity due to rotation of the target, the variations being pronounced due to the heel effect of the radiation pattern. In one embodiment, the X-ray detector employs a scintillation material and is coupled by a light pipe to a photodetector which is removed from the path of the radiation and detects scintillations of the X-ray detector. Alternatively, the photodetector and light pipe may be deleted by the use of a detector of germanium, silicon or an ion chamber which converts X-ray photons directly to an electric current.
Abstract: A system for separating glass particles from a mixture containing magnetic materials and glass, which system comprises a completely enclosed apparatus which protects against pollution by harmful silica dust and avoids excessive abrasion of conveying mechanism by utilization of pneumatic impulse feed devices whereby mixed particles are transported from a pressure vessel to one of a series of magnetic roller separators and further including dust separation or air cleaner means whereby substantially only glass and magnetic particles to be separated are introduced into the magnetic separators.
Abstract: A control system for rotating anode x-ray tubes comprising an x-ray tube including an anode rotated by a motor having mounted therein photoelectric means for sensing rotational movement of the anode, and circuit means electrically connected to the tube, the photoelectric means, and the motor for regulating operation of the tube and rotational speed of the motor in accordance with parameters selected for operation of the tube.
April 17, 1980
Date of Patent:
February 16, 1982
The Machlett Laboratories, Incorporated
Jonathan S. Shapiro, William P. Holland
Abstract: Materials separator apparatus for segregating electrically conductive particles having a wide range of sizes from a stream of commingled materials. The apparatus includes a material feeder device disposed for directing the commingled particles into a stream. A spatially alternating, steady-state array of juxtaposed, oppositely directed magnetic fields of varying widths is established adjacent the stream. As the materials pass through the magnetic fields, forces exerted on the electrically conductive particles cause lateral deflection of these particles from the stream thereby providing the desired separation. Because the widths of the magnetic fields vary over a wide range, the apparatus provides effective separation of a wide range of sizes of electrically conductive particles.
Abstract: An integral package for a cassette type article comprising a foldable member having first and second cover walls pivotally connected to a spine wall to form a book-like container, and having disposed between the cover walls a rectangular tubular compartment. The compartment has a side panel provided with a slotted opening dimensioned for receiving therein at least a portion of the article, and is disposed with respect to the spine wall for retaining the article in the compartment when the container is closed. The foldable member also may have a flap portion integrally connected to one of the cover walls along a perforated edge to provide a support hanger which may be used to support the package in retail displays and may be readily removed when the package is stored, similar to a book on a shelf, for example.
Abstract: An electron discharge device including an evacuated envelope having therein an indirectly heated cathode comprised of a metallic cathode cup having a cylindrical wall provided with an outwardly extended pair of opposing axially sloped flanges which contactingly engage respective opposing bevelled surfaces of a dielectric support ring encircling the wall and having an inner periphery radially spaced therefrom.
Abstract: A materials separator apparatus comprising a stacked array of horizontally oriented and vertically spaced separator stages, which may be interconnected by a material conductor disposed for receiving commingled materials from an upper stage and feeding it to an input portion of a lower stage, each stage including a vibrating, endless belt supported for carrying a stream of commingled materials longitudinally over a steady-state magnetic array of spatially alternating, oppositely polarized magnets disposed substantially parallel to one another and extended transversely at an oblique angle to the stream whereby electrically conductive items of nonferromagnetic material passing over the magnetic array are deflected laterally out of the stream, the materials remaining in the stream may be discharged from the belt by passing them over a roller which may be magnetized for segregating dielectric nonferromagnetic material from ferromagnetic material.
Abstract: A cathode current control system comprising an electron discharge device having a tubular envelope wherein an electron gun is disposed to beam a cathode current of electrons onto a spaced anode collector electrode, the gun including an electron emitting cathode, an apertured control grid electrode spaced from the cathode, and a further spaced series of beam forming electrodes; and external circuit means connected to the cathode and other electrodes of the device for maintaining the electrodes at respective predetermined electrical potentials relative to the cathode and for maintaining electron emission from the cathode sufficient for providing a predetermined level of cathode current associated with the predetermined electrical potentials of the electrodes.
March 2, 1979
Date of Patent:
January 27, 1981
Andras Dallos, John A. Buckbee, Gordon R. Spencer
Abstract: An image intensifier tube comprising an evacuated envelope wherein two spaced electrodes are insulatingly secured to one another by a dielectric member having an end portion extended within closely spaced walls of a hollow conductive shielding means attached to one of the electrodes for protecting the end portion from conductive vaporous material released within the envelope during processing and from resulting voltage breakdown during operation of the tube.