Abstract: A dental model tray (12) for use in forming a dental model has a rigid bottom wall (16) and a relatively thin side wall (17) extending upwardly from the perimeter of the bottom wall (16) to form an open-topped cavity which is adapted to receive the dental casting material. The bottom wall (16) and the side wall (17) are formed integrally of polymeric material, with the side wall (17) being joined to or attached to the bottom wall (16) by a thin membrane-like connector member (19) that is formed integrally with the perimeter of the bottom wall (16) and a lower side edge of the side wall (17). The connector member (19) is frangible and easily broken so that the side wall (17) can be torn away from the base and discarded after dental casting material has hardened in the cavity formed by the side wall (17). The dental model tray (12) further includes an ell-shaped articulator member (13,14) that extends from a back side of the bottom wall (16).

Abstract: An inflation for a milking machine is formed to have an elongate, hollow barrel. The barrel terminates in open upper and lower ends. An elongate reinforcement element comprising a relatively narrow raised rib is molded integrally along an outer surface of the barrel. The raised ribs provide added integrity for the sidewalls of the barrel and greatly improved massage to the teat tissue.

Abstract: Pipe fittings, used in joining abutting ends of two pipe sections, comprise a pair of semi-cylindrical members that are adapted to fit around and engage the periphery of opposed ends of the two abutting ends of the pipe sections. Longitudinal edges of the two semi-cylindrical members are formed so as to mate with one another to form a mechanical means of locking the semi-cylindrical members together in tight engagement with the ends of the pipes. Each of the semicylindrical members has a seal mechanism formed of a resilient, elastomeric material which forms a mechanical, water-tight seal between the mutually respective pair of semi-cylindrical members as well as the opposite ends of the pipes to which the pair of semi-cylindrical members have been attached.

Abstract: A removable centric stop mechanism 10 for use in a system for making dental restorations. The stop mechanism 10 includes an elongate stop member 11 that can be firmly attached or connected to the dental model and can further be removed from the dental model when so desired. The elongate stop member 11 further incorporates a threaded elongate member 36 that can be threaded to and fro in a bore 34 in the elongate stop member 11 to thereby adjust the effective length of the elongate stop member 11.

Abstract: A non-toxic, germicide, fungicide and healing composition and a method of topically applying the composition in powdered form to the skin of domesticated farm animals including dairy cattle are disclosed. The composition comprises (a) finely divided, particulate chlorhexidine-containing material, (b) finely divided, particulate zinc-containing material and (c) an inert powdered carrier, with the chlorhexidine-containing material and the zinc-containing material being present in an amount to achieve effective germicidal activity. The chlorhexidine-containing material is preferably chlorhexidine acetate. The zinc-containing material is preferably selected from the group consisting of zinc stearate, zinc chloride, zinc nitrate, zinc oleate, zinc oxide, zinc phosphate, zinc peroxide, zinc iodide, elemental zinc and mixtures thereof.

Abstract: Tray (10) for forming dental model comprises base wall (12) forming floor upon which dental casting material is poured. Spaced apart projections (14) extending upwardly from base wall (12). An upstanding axis of each projection (14) is substantially perpendicular to the upper face of the base wall (12). Projections (14) are arranged in two rows, with the projections (14) in one row being offset from corresponding projections (14) in the other row. Sidewalls of each projection (14) taper inwardly at an angle of between about 82 to 88 degrees with the upper face of the base wall (12). Each projection (14) has a thickness at its base of about 3 to 7 millimeters. The projections (14) are spaced from each other at their bases by a distance of from 0 to 5 millimeters.

Abstract: Tray (10) for forming dental model comprises base wall (12) forming floor upon which dental casting material is poured. Spaced apart projections (14) extend upwardly from base wall (12). An upstanding axis of each projection (14) is substantially perpendicular to the upper face of base wall (12). Projections (14) are arranged in two rows, with the projections (14) in one row being offset from corresponding projections (14) in the other row. Sidewalls of each projection (14) taper inwardly at an angle of between about 82 to 88 degrees with the upper face of the base wall (12). Each projection (14) has a thickness at its base of about 3 to 7 millimeters. The projections (14) are spaced from each other at their bases by a distance of from 0 to 5 millimeters.

Abstract: A milking inflation fits over the upper end of a teat cup shell, with a peripheral shoulder and cuff adapted to surround and sealingly engage the upper rim of the shell. A substantially flat, relatively thin section (mouthpiece) extends radially inwardly from the shoulder and toward a center portion which defines a circular central opening or mouth for receiving a teat of a lactating animal. A plurality of geometrically-shaped indentations are aligned in a circumferentially extending pattern around the mouth. The indentations are formed integrally in a broad surface of the mouthpiece and extend radially inwardly from the shoulder and cuff toward the center portion and central opening. The inward tips of the geometrical indentations leave a substantially raised portion around the center opening, and due to the alignment of the geometrical indentations there is an immediate raised portion around the central opening of the mouthpiece.

Abstract: A display device for displaying sheet-like materials from opposite sides of the device comprises two planar panels. Each of the panels are made of a transparent material, and the two panels are hinged together along respective, corresponding side edges thereof. The panels can thus be moved from a first position in which the panels lie substantially side-by-side to a second position in which the panels pivot about a hinge axis of the hinged sides of the panels to fan apart in a manner similar to adjacent pages of a book. Strips of hook and pile attachment materials are adhered to facing edges of the panels so that when the panels are in their first position, the strips of hook and pile attachment materials engage each other along the mutually respective side edges of the panels to firmly hold the panels in their side-by-side, overlying position.

Abstract: A pacifier which can be used to introduce liquids orally to an infant has a resilient, hollow nipple that extends from a broad, inner face of a shield plate which in turn abuts the external surfaces of the lips of an infant when the nipple is positioned in the infant's mouth. An elongate, delivery tube extends from the shield plate through the nipple. An open, distal end of the delivery tube projects through a distal end of the nipple so that the open, distal end of the delivery tube opens into the infant's mouth when the nipple is in the infant's mouth. Liquid to be administered to the infant is introduced into the proximal end of the delivery tube through a flexible tube that is rotatably attached to the proximal end of the delivery tube.

Abstract: A method of cleaning a linear discharge pipe that extends from a tank to a valve comprises attaching a cleaning apparatus to the discharge side of the valve on the discharge pipe. The valve is then opened and a rotating cutter head on the cleaning apparatus is advanced through the open valve and the discharge pipe until the cutter head has traversed the entire length of the discharge pipe. The rotating cutter head is then withdrawn back through the discharge pipe and the open valve. The valve is then closed and the cleaning apparatus is removed from the discharge side of the valve. Any portion of downstream piping that had been removed to allow access to the valve is then reinstalled to the discharge side of the valve.

Abstract: Aqueous film forming compositions are disclosed that are to be applied to the teats of dairy animals to form a protective film on the teats. The protective film may be applied as a dip or spray. The compositions comprise a polyethylene glycol-lanolin complex and an amide condensation product of monoethanolamine and an organic acid having a carbon chain length of from 2 to 4. The compositions can further include xanthan and a germicidal agent.

Abstract: A bank of seats for use in an amusement type environment has at least two seats arranged in side-by-side orientation with all seats facing in the same direction. The bank of seats has a substantially planar platform and upstanding, forward support arms attached to the platform in spaced apart positions adjacent at the front edge of the platform. In addition, upstanding, rearward support arms are attached to the platform at spaced apart positions adjacent to the back edge of the platform to form respective pairs of forward and rearward support arms. Each of the seats is mounted for pivotal movement about a pivot axis that is adjacent to the distal ends of a respective pair of forward and rearward support arms. All of the seats are pivoted in unison about their respective pivot axes so that each seat sways from side to side in substantially the same pivotal movement as all other of the seats. Independent mechanisms raise and lower the front and back edges of the planar platform.

Abstract: An improvement in a folding chair commonly called an aluminum lawn chair comprises independently operated mechanisms on each leg of the chair that allows the length of each leg to be adjusted independently of the other legs. This allows the lawn chair to be used on so that the chair can quickly be made suitable for sitting on unlevel ground. Each leg of the folding aluminum lawn chair has a tubular member firmly attached thereto, with the lower end of each tubular member being located adjacent to or near the bottom end of the respective leg of the chair. A telescoping member is positioned inside each tubular member so that the telescoping member extends downwardly from the lower end of the tubular member, and a mechanism is provided for securing the telescoping member in any desired position in its telescopic movement extending from the tubular member. Each telescoping member of the chair can thus be adjusted to a desired position so that the chair can be made suitable for sitting on unlevel ground.

Abstract: A submicrometer photodiode probe with a sub-50 nanometer tip radius is used for optical surface characterization on a nanometer scale. The nanoprobe detects subwavelength optical intensity variations in the near field of an illuminated surface. The probe comprises a metal-semiconductor Schottky diode that is constructed at the end of a micromachined tip of a semiconductor wafer. A process is disclosed for micromachining the tip of the semiconductor wafer and then of creating a photodiode at the tip, with the photodiode having an optical aperture of a size less than 1000 nanometers.

Abstract: A device used in fishing has first and second, water absorbing, substantially planar, drying pads. A first polymeric bag lies along one of the drying pads. A hydrophilic, thixotropic material is contained inside the first polymeric bag. A small hole is located closely adjacent to or at a lower corner of the first polymeric bag, such that the hydrophilic, thixotropic material will be retained in the first polymeric bag unless the first polymeric bag is squeezed to extrude the hydrophilic, thixotropic material from the first polymeric bag. A second polymeric bag lies along the other of the drying pads. A sheet of open celled, foamed polymeric material is contained in the second polymeric bag. Finely powdered amorphous hydrophobic fumed silica is also contained in the second polymeric bag, with the fumed silica permeating the open cells of the sheet of open celled, foamed polymeric material. A pin hole is provided in a side wall of the second polymeric bag.