Abstract: A collimating mark device is provided with an infrared collimating mark intended to be observed through a sight. The infrared collimating mark is designed such that at least two V-shaped intensity distributions are positioned in a way that their respective apexes are facing one another. Despite a relatively blurred image after conversion into a visible collimating mark, the blurred visible collimating mark can be brought in a reproducible and reliable manner into coincidence with a fixed alignment mark.

Abstract: There are disclosed methods for making radiographs using slit-scanning radiographic techniques wherein a measuring exposure is effected at low radiation intensity and thereafter radiation intensity is set at a value suitable for effecting and taking the actual exposure and further including a modulation of radiation intensity during actual exposure.

Abstract: In a method for slit radiography a fan-shaped X-ray beam scans a body to form an X-ray shadow image. The fan-shaped beam is formed by a number of sectors situated next to each other. For each sector the transmitted X-ray radiation is controlled instantaneously during a scan by means of controllable beam sector modulators. The X-ray radiation is cyclically modulated in a predetermined manner for all the sectors taken together. The controllable beam sector modulators are individually controlled to select cyclically and in synchronism with the predetermined cyclic modulation a part of the X-ray radiation for each sector.

Abstract: An apparatus for slit radiography comprising discrete controllable attenuation elements coacting with a slit diaphragm, each attenuation element being affixed to damping means.

Abstract: Anti-smoking oral preparations are provided containing a silver compound as the anti-smoking agent and a sweetener in which the silver compound is present in amounts of from 0.1 mg. to 2.5 mg. and the ratio of sweetness intensity based on sucrose to silver compound content is from 100:1 to 2500:1.

Abstract: There is disclosed an improved process and apparatus for the pyrolysis of a heavy hydrocarbon feed utilizing a transfer line reactor wherein pyrolysis reaction temperatures are achieved by contact of the heavy hydrocarbon feed with heated solid particles immediately followed by quenching of the pyrolysis gaseous effluent with cooled solid-particles in the transfer line reactor to maximize ethylene production and minimize the effect of secondary reactions.

Abstract: There is disclosed an improved process and apparatus for generating a gaseous media for stimulating and/or fracturing a hydrocarbon bearing well formation comprised of a substantially horizontally-disposed gas generator having a first catalyst reaction bed, an expansion chamber, a second catalyst reaction bed, a venturi chamber for forming a gaseous stream to be introduced into the hydrocarbon bearing well formation.

Abstract: There is disclosed an apparatus for forming hydrophilic polymeric solutions wherein a vessel is provided with a mixing assembly comprised of co-axially and vertically-disposed inner and outer cylindrically-shaped wall members mounted to a bottom wall member wherein the inner wall member defines a mixing chamber and is provided with orifices about a lower portion thereof to provide fluid communication to a solution chamber defined between the wall members and wherein an upper portion of the outer wall member defines a weir to the vessel and wherein an agitator is positioned within the mixing chamber to admixed feed hydrophilic polymer and solvent in a vortex of polymeric solution contained in the mixing chamber and to cause the polymeric solution to overflow the weir into the vessel.

Abstract: There is disclosed a dosimeter to be used in connection with slit radiography and comprised of a gas filled chamber with one side wall provided with a plurality of X-ray transparent strip-like electrodes extending substantially transversely to a longitudinal direction of the oblong-shaped casing and another side wall provided with wire electrodes extending parallel to such longitudinal direction of the oblong-shaped casing wherein each of the strip-like electrodes generates a signal representative of intensity of ionizing radiation and wherein the strip-like electrodes are divided into a number of groups, signals from the strip-like electrodes belonging to each group are combined to provide a control signal for a respective attenuation element.

Abstract: An image pickup device comprises a matrix of rows and columns of image pickup elements. Image information is transferred in the column direction in the time-delay-and-integration mode. Each column comprises at least two regions containing image pickup elements, whereby spectrally different images can be picked up during a single scan.

Abstract: An image pickup device comprises a matrix of rows and columns of image pickup elements. Image information is transferred in the column direction in the time-delay-and-integration mode. Two shift registers are associated with each column of image pickup elements. During a first period information from the image pickup elements of each column is transferred to a first one of each two shift registers associated with each column and during a second period information is transferred to the second one of each two shift registers associated with each column.Such an image pickup device can be used in radiography as a means for detecting x-ray radiation transmitted by a body under examination. In order to obtain a dual energy image a first or a second spectral center point is periodically imparted to the x-ray radiation synchronously with the first and second periods.

Abstract: A reusable plastic drum container assembly having a fitting-receiving member in an opening provided in a drum head wherein the opening is formed by a cylindrically-shaped indentation portion extending perpendicularly from the top surface of the drum head and wherein the fitting-receiving member in cross-section is of an inverted U-shape having an inner cylindrically-shaped portion, a circularly-shaped base portion, and an outer cylindrically-shaped leg portion defining a channel and is disposed over the neck member of the drum head with an electromagnetic bonding material fused between the outer surfaces of the neck member and the interior surfaces of the fitting-receiving member.

Abstract: There is disclosed a vacuum assembly including a manifold housing having one port in fluid communication via a conduit with the suction side of a pump and wherein a user site is in fluid flow via a conduit with another port or the manifold housing and wherein a vacuum relief valve assembly is positioned within the manifold housing and includes a valve disc of a spring loaded valve disc assembly in line contact with a bevelled valve seat of a valve body of the vacuum relief valve assembly thereby defining a valve seat of line contact wherein the area downstream of the valve seat is greater than the area at the valve seat.

Abstract: In a preferred embodiment, a sail-boat type wind-surfing catamaran as a kit of disassembled parts having inflatable deflated pneumatically-sealed pontoons, attachable and anchorable onto transversely extending detachable forwardly and rearwardly beams by detachably mountable and anchorable on the transversly extending beams, the band circumscribing the respective inflated pontoons when mounted, at-least a portion of each of the beams extending above the respective pontoons when inflated, the floor being mountable between and detachably anchored on the forwardly and rearwardly beams by forwardly to rearwardly-extending elongated supports extending between and detachably anchored on the forwardly and rearwardly beams, with a wing-rudder mounted in a fixed position on a distal end of an elongated wing-mounting rod-structure of which the proximal rod-end is detachable mounted between the pontoons and anchored on the rearwardly transverse beam, with supplemental support thereto extending from rearward portions of

Abstract: There is disclosed a protective garment having an outer protective shell, a moisture barrier, and an inner thermal liner wherein the inner thermal liner is formed of a non-woven web of a wool blend and another fiber mounted to a woven web of a wool blend and another fiber wherein the wool content of the layer of woven material is greater than the wool content of the non-woven layer.

Abstract: An apparatus for thermoforming hollow articles including forming molds and die cutting molds disposed in spaced-apart relationship wherein the web or sheet of thermoplastic material is sequentially moved or indexed in an integrated operation whereby an article formed in the forming molds is advanced into proper alignment with respect to the die cutting molds and die cut, and subsequently withdrawn to an appropriate storage assembly. The forming molds and die cutting molds being positioned on upper and lower platens.

Abstract: The gas rate sensor in the present invention is provided with a holder assembly having a metallic holding portion for holding flow sensors and a cylindrical casing containing the holder assembly and heater wires which are wound around the outside thereof. The outer periphery of the holding portion is provided with a plural number of projections which are brought into compressive contact with the inner periphery of the casing for enabling pressing of the holder assembly into the casing. A temperature detection element is disposed in a gas flow passage between the holder assembly and the casing for performing energizing control of the heater wires.

Abstract: There is disclosed a self-contained breathing apparatus of the positive pressure type wherein there is provided a pneumatic servo mechanism responsive to a pressure sensor to drive a breathing storage chamber by expansion of an oxygen containing gas from a storage tank therefor.

Abstract: A thermowell assembly consists of an elongated tube member including a channel and having a plurality of arm members disposed at diverse lengths and extending into the channel of the tube member. Thermocouple guide tubes including passageways for receiving a thermocouple are disposed in the channel of the elongated tube member with a terminal end portion of each thermocouple guide tube being mounted to respective arm members.

Abstract: There is disclosed an improved liquid-solids-gas separator assembly permitting recovery of a major portion of the liquid stream for recirculation to a vacuum producing assembly wherein the separator assembly includes a gas-liquid and solids separator chamber and a liquids separator chamber for recovery of a recycle water stream and wherein the separator assembly comprises a vessel defining a cylindrically-shaped chamber into which a dental effluent including water, gases and lighter and heavier than water particles and from which a gas is vented through an upper conduit and liquid streams are recovered from a liquid pool wherein one liquid stream includes lighter than water particles and in one aspect is combined with heavier than water particles and a second liquid stream is recovered for recycling purposes.