Abstract: A machine tool (10) has a revolving spindle (14) borne in a spindle tube (13) which has a locating opening (15) to receive tool holders; (16, 17). A tool magazine (55) is also provided to hold a number of tool holders. Moreover, a tool changer (18) with at least two gripper arms (21, 22) is provided to transport tool holders; (16, 17) between a transfer position (23) in the area of the tool magazine (55) and a common spindle position (24) beneath the locating opening (15). A holding device (31) bearing the tool changer (18) is borne on the spindle tube (13) in such a way that it can be moved longitudinally in the sense of a stroke movement (33) and transfer the respective tool holder (16) from the spindle position (24) into its working position in the locating opening (15). The holding device (31) is borne on the spindle tube (13) along its longitudinal axis so that it can be rotated in such a way that the gripper arms (21, 22) have a common transfer position (23) to the tool magazine (55).

Abstract: A barrier system for dental procedures utilizing a disposable gown positioned on a dental operatory chair as a shield between dental personnel and their patients. The gown is arranged and supported on a support frame mounted to the operatory chair so that the dental personnel can easily slip into and out of the gown in moving between patients in different rooms, while the gown remains on the operatory chair.

Abstract: A constant-flow drip irrigation tape hose includes a primary flow path communicating water along the length of the hose. A secondary drip-flow path leads from the primary flow path to an emitter site outwardly of the hose. The hose is formed with a pair of variably spaced apart walls at least one of which is formed with a continuously-open channel defining part of the secondary flow path. A second variable-area part of the secondary flow path is defined by radial spacing of the pair of walls from one another. At least one of the pair of walls is responsive to internal water pressure in the primary flow path to open and close the variable-area part of the secondary flow path in response, respectively, to decreasing and increasing water pressure in the hose. A plurality of emitter sites are spaced regularly along a length of the hose.

Abstract: A hook latch mechanism for joining two members of an engine cowl or the like, with the hook latch mechanism carried on one member on a mounting bolt and a keeper carried on the other member, and with a keeper engaging hook spaced from the handle.

Abstract: A headphone having ear pieces joined by a head band with an electrical cable interconnecting the ear pieces, including a first plurality of outward opening grooves in the head band and a second plurality of inward opening grooves in the head band, with the first and second grooves alternately positioned along the head band defining a path for the electrical cable between the ear pieces. Preferably the grooves are formed integrally with the head band, with the portions of the head band forming the grooves projecting from the head band with the grooves in alignment with each other. The headphone may also include a comfort sling underlying the head band and connected at each end to the head band.

Abstract: An amusement ride includes a vehicle traveling down a chute through a region of water. The vehicle is shaped to minimize splashing and to allow water to flow away from the vehicle. The vehicle flanks are curved to deflect splashing water down and away from the vehicle, and the vehicle bow has upper flanks to deflect water down and away from the vehicle. The vehicle bottom has a concave channel to accommodate water displaced by the vehicle. The vehicle has sets of wheels for traveling, for guiding lateral motion, and for interlocking with floating prevention mechanism. A groove along each side of the vehicle accommodates a splash prevention member on the water chute.

Abstract: A planar-type loudspeaker incorporating a substantially planar diaphragm constructed from a pre-expanded cellular plastic material, such as polystyrene, in which one or more balancing weights are embedded in a resilient material within recesses formed in the rear surface of the diaphragm. The resilient material enables the weights a degree of movement relative to the diaphragm, such that the weights can serve a counteractive function to help control the frequency response characteristic of the diaphragm.

Abstract: A cryogenic freezing system having a cooling tunnel with an inlet end, an outlet end and a floor therebetween, a tank for a liquid cryogenic material and with an inlet end, an outlet end, and a floor therebetween, a first conveyor for moving crumb material along the tunnel floor for depositing crumb material into the tank, and a second conveyor for moving crumb material along the tank. The tank floor includes a ramp, with the second conveyor positioned to move the crumb material along the floor of the tank upward along the ramp out of the liquid cryogenic material prior to reaching the tank outlet end. The conveyors are endless belts of open material, with openings of a size to pass the crumb material so that the crumb material will fall through the conveyor onto the floors. Scraper blades are carried on the belts projecting outward from the conveyors to move along and in contact with the floors.

Abstract: An encapsulated flavoring material contains an edible, oil-insoluble, water-soluble outer shell surrounding an edible, water-insoluble inner core that is liquid at a temperature of about 45.degree. C. and a volatile, oil-soluble flavoring material dissolved or dispersed in the inner core. In preferred embodiments, the encapsulated flavoring material has a diameter of from about 250 to about 710 microns, the outer shell is made from starch, the inner core is made from hydrogenated vegetable oil and the volatile, oil-soluble flavoring material is diacetyl.

Abstract: Processes for stabilizing protein in acid pH media are provided as well as the compositions produced thereby. Acidified protein compositions exhibiting protein stability for extended periods of time are also provided. The processes of the present invention promote chemical reaction between protein and galactomannan to achieve protein stability in acid pH media.

Abstract: In accordance with the present invention, there are provided novel assays which allow the identification of compounds which block the ability of lentiviruses to infect non-dividing cells. Compounds discovered employing the invention methods can be employed to block the ability of HIV to infect non-dividing cells. In accordance with another aspect of the present invention, novel antibodies have been developed which are specifically immunoreactive with the phosphorylated form of HIV-1 MA. In accordance with yet another aspect of the present invention, novel kinases which phosphorylate HIV-1 MA have been discovered.

Abstract: An adapter for enabling a single sheet towel dispenser to dispense towels from a roll. The single sheet towel dispenser has a housing with an access opening and a towel support tray within the housing, the tray having a dispenser slot for movement of a towel resting on the tray downward through the slot and outward to the access opening. The adapter has a first member and a second member, each having a lower section and an upper section, with the members joined together at the lower sections to define a towel passage therebetween, with the towel passage of a size to slide downward through the dispenser slot of the tray, and with the upper sections of the members curving away from each other and each terminating in a support section for resting on the tray.

Abstract: An improved automatic pool cleaner of the type having a frame and a supply mast fastened thereto at a lower end, in which a first fastener portion located adjacent to the lower end of the supply mast is removably engageable with a second fastener portion located on the frame. Because the first fastener portion is removably engageable with the second fastener portion, a broken supply mast can be easily separated from the frame and a new supply mast easily installed thereon.

Abstract: Disclosed are novel trans-repressing analog receptors wherein the ligand-binding domain(s) are modified versus wild type receptor, such novel receptors having repressed trans-activation transcription activation properties. Also disclosed are recombinant methods and means for preparing such receptors and assays using such receptors.

Abstract: A film correction system adjusts a relative position of film containing an area for information and a scanner of the film area. The system includes a scanner for scanning the film area at a film plane. A film drive moves the film along the film plane. A focused beam separate from the film area scanner scans a film edge in the film for determining a location of the film edge. A circuit is coupled to the focused beam scanner for changing a relative position of the film area scanner and the film area. The film edge scanner is a flying spot scanner, and the apparatus includes signal processors for processing the sprocket information. The system may be retrofit to an existing telecine apparatus. A separate coil may be used to provide deflection of a flying spot scanner used to scan the picture information on the film.

Abstract: A novel retinoic acid receptor is disclosed. The novel receptor is encoded for by cDNA carried on plasmid phRAR1, which has been deposited with the American Type Culture Collection for patent purposes. Chimeric receptor proteins are also disclosed. The chimera are constructed by exchanging functional domains between the glucocorticoid, the mineralocorticoid, the estrogen-related, the thyroid and the retinoic acid receptors. In addition, a novel method for identifying functional ligands for receptor proteins is disclosed. The method, which takes advantage of the modular structure of the hormone receptors and the idea that the functional domains may be interchangeable, replaces the DNA-binding domain of a putative novel receptor with the DNA-binding domain of a known receptor such as the glucocorticoid receptor. The resulting chimeric construction, when expressed in cells, produces a hybrid receptor whose activation of a ligand-(e.g.

Abstract: The present invention provides a recombinant expression system for production of functional thyroid hormone receptor protein(s). The invention also provides a method to produce thyroid hormone receptor protein(s) by culturing the cells of the invention recombinant expression system. Also provided are thyroid hormone receptor protein(s) produced by the invention method. In addition, the present invention provides recombinant DNAs comprised of sequences which encode proteins having the hormone-binding and/or transcription-activating characteristics of a thyroid hormone receptor. The invention also provides various plasmids containing receptor sequences which exemplify the DNAs of the invention. The invention further provides complementary mRNAs, cells transformed with invention DNAs, and nucleic acid probes derived from invention DNAs.

Abstract: The present invention discloses steroid/thyroid hormone receptor DNA binding domain compositions that determine target gene specificity. The invention further discloses methods converting the target gene specificity of one receptor into the target gene specificity of another. Still further the invention discloses novel assays for identifying ligands for orphan hormone receptors. These assays are especially useful since they avoid the necessity of constructing chimeric genes and proteins in order to search for ligands that can activate a putative receptor.