Abstract: A fluoropolymer-based powdered composition is disclosed. The fluoropolymer has a very low melt viscosity, of less than 2 kilopoise (kP) at 230° C. and 100 s?1 and molecular weights of from 15 kDa to 200 kDa. The composition can be used for powder coating or rotolining processes. The coatings or interior surfaces of the coated or rotolined parts exhibit roughness values, Ra, of less than 25 ?in (0.64 ?m) corresponding to very smooth surfaces. The coating exhibit very good adhesion to substrates with and without surface preparation as well as very good adhesion to substrates with and without primer.

Abstract: A climbing tool operative for climbing an artificial climbing wall, simulating dry tooling, ice climbing and mixed climbing. The tool has a strap replacing the axe portion used in outdoor climbing, the strap engaging a climbing wall hold. The tool has a grip attached to an angled shaft. The grip has a grasping portion for a hand that includes a pinky rest and a finger rest. The grip has a match rest for a second hand to grasp the tool above the grip in a “match maneuver.” The grip has an inward bias toward the wall from the shaft at about 160 degrees, and the angle in the shaft portion is about 160 degrees, providing an appropriate skeletal wrist angle when the tool is grasped. Because the climbing tool does not have any sharp points or edges, it does not damage an artificial climbing wall.

Abstract: Audio-visual data is provided to a network-connected terminal. First audio-visual data containing first information encoded at a first data rate and second audio-visual data containing first information encoded at a second data rate that is more than the first data rate are received. The first audio-visual data is provided to the network-connected terminal. A condition is identified to the effect that the amount of data being sent to the terminal is less than the available bandwidth. The difference between the data rates of the first and second audio-visual data is calculated, additional data packets are sent to the terminal to determine whether the available bandwidth is large enough to provide the first audio-visual data to the terminal; and if it is determined that the available bandwidth is large enough, provision of the first audio-visual data to the terminal is stopped and the second audio-visual data is provided instead.

Abstract: Transmitting packets of data from a first station to a second station. Each data packet conveys information of a first information type or a second information type thereby giving each an information type. Each data packet is transmitted using at least a first transmission process or a second transmission process and for each data packet a transmission process is selected in response to an indication of the information type of the information conveyed by the data packet.

Abstract: Data packet transmission involves transmitting a plurality of data packets from said first station to a second station at a first rate of transmission. Acknowledgement data is returned from the second station to the first station to acknowledge the receipt of data packets at the second station. Data packets that are not acknowledged are retransmitted from said first station to said second station. The first station monitors retransmit information indicating how many packets are retransmitted and adjusts said rate of transmission from said first rate to a second rate in response to an output of a control procedure that receives said retransmit information as an input.

Abstract: Audio-visual data is provided to a network-connected terminal. First audio-visual data containing first information encoded at a first data rate and second audio-visual data containing first information encoded at a second data rate that is more than the first data rate are received. The first audio-visual data is provided to the network-connected terminal. A condition is identified to the effect that the amount of data being sent to the terminal is less than the available bandwidth. The difference between the data rates of the first and second audio-visual data is calculated, additional data packets are sent to the terminal to determine whether the available bandwidth is large enough to provide the first audio-visual data to the terminal; and if it is determined that the available bandwidth is large enough, provision of the first audio-visual data to the terminal is stopped and the second audio-visual data is provided instead.

Abstract: Data is provided over a network by negotiating a communications link with a network-connected terminal. First data is provided to the terminal over the communications link. Following receipt of a request from the terminal, provision of the first data to the terminal is stopped and second data is provided to the terminal over the communications link. At least one characteristic of the second data is modified so that it resembles the first data.

Abstract: The present invention provides a screen system (8) suitable for use in a vibratory screen apparatus (1), and comprising: a screen element (11) and a support frame (12) therefor, as well as novel screen elements (11) and mesh panels (19) therefor, and the use thereof. The screen element (11) consists essentially of a mesh panel (19) provided with first and second elongate support members (22, 23) extending along opposite end portions of the mesh panel (19). The support frame (12) has spaced apart first and second elongate frame elements (13, 14) for engagement with the screen element support members (22, 23) and further elongate frame elements (17, 18) extending there between for supporting the mesh panel (19).

Abstract: The present invention provides a screen system (8) suitable for use in a vibratory screen apparatus (1), and comprising: a screen element (11) and a support frame (12) therefor, as well as novel screen elements (11) and mesh panels (19) therefor, and the use thereof. The screen element (11) consists essentially of a mesh panel (19) provided with first and second elongate support members (22, 23) extending along opposite end portions of the mesh panel (19). The support frame (12) has spaced apart first and second elongate frame elements (13, 14) for engagement with the screen element support members (22, 23) and further elongate frame elements (17, 18) extending there between for supporting the mesh panel (19).

Abstract: A polymer cutter with a rotary cutting head in which the cutting edges are on the circumferential periphery of the head is described. The knife blades on the rotary head have a knife angle (as defined) of about 40° to about 60°. The apparatus is especially useful for cutting hard and/or brittle thermoplastics and may be used for preparing polymer granules or pellets.

Abstract: A screen system 8 suitable for use in a vibratory screen apparatus 1, comprising: a screen element 11 consisting essentially of a mesh panel 19 provided with first and second elongate support members 22, 23 extending along opposite end portions 20, 21; and a support frame 12 therefor. The support frame 12 has spaced apart first and second elongate frame elements 13, 14 for engagement with said screen element support members 22, 23 and further elongate frame elements 17, 18 extending between the first and second frame elements 13, 14 for supporting the mesh panel 19. The support frame 12 is provided with at least one mesh panel support 27 provided with an elevating support surface, which tensions the screen element 11 across the support surface 27 and between the screen element support members 22, 23. The latter 22, 23 and the first and second frame elements 13, 14 are being formed and arranged for secure interengagement.

Abstract: A delay circuit comprising a plurality of cascaded saturating circuit elements is provided. The delay circuit may be incorporated in such circuits as modulators and demodulators to provide signal delay.

Abstract: A delay circuit comprising a plurality of cascaded saturating circuit elements is provided. The delay circuit may be incorporated in such circuits as modulators and demodulators to provide signal delay.

Abstract: A delay circuit for providing signal delay within an acoustic imaging system is provided. Reflected acoustic signals are transformed into electrical signals and are used to reproduce images of objects. Delay lines along the electrical signal path are used to focus the images compensating for asynchronism of electrical signals caused by variations in the length of acoustic signal paths.

Abstract: A push frame assembly for a scraper bowl is provided with a tubular structural member extending between, and being rigidly fastened directly to, the side walls of the push frame. A push block and a spreader tube are, likewise, connected between the side walls to produce a relatively rigid frame assembly. In one form of the invention, the tubular structural member has a transverse sleeve therethrough through which an ejector cylinder passes, while in another form of the invention, the tubular structural member has provision for receiving a differential and has reinforced mounts on the one side thereof for connection of ejector cylinders thereto. A method of making a push frame assembly is provided wherein a pair of side walls are fastened directly to a tubular member with a spreader tube and a push block framework connected to the side walls to produce a stronger push frame assembly.

Abstract: A push frame assembly for a scraper bowl is provided with a tubular structural member extending between, and being rigidly fastened directly to, the side walls of the push frame. A push block and a spreader tube are, likewise, connected between the side walls to produce a relatively rigid frame assembly. In one form of the invention, the tubular structural member has a transverse sleeve therethrough through which an ejector cylinder passes, while in another form of the invention, the tubular structural member has provision for receiving a differential and has reinforced mounts on the one side thereof for connection of ejector cylinders thereto. A method of making a push frame assembly is provided wherein a pair of side walls are fastened directly to a tubular member with a spreader tube and a push block framework connected to the side walls to produce a stronger push frame assembly.

Abstract: In a surface inspection system a detector responds to light received from the surface to give a detector signal including disturbances due to surface faults, and includes an equalizer circuit to control the gain of a photomultiplier, and therefore signal amplitude, in response to a peak level detector, to control the level of the signal in relation to the amplitude of the disturbances and a band-pass filter to compensate for variations in the signals due to changes in the optical gain of the detector. The equalizer circuit is an amplifier and the control is achieved by way of feedback and feedforward control loops. In a modification the system may comprise a row of detectors and the equalizer circuit may be arranged to accommodate changes in the amount of light received at the junctions of detectors.

Abstract: A scraper comprises a bowl structure having an ejector assembly reciprocally mounted thereon for selectively discharging material forwardly of the bowl structure. In one embodiment of this invention, a guide rail assembly is secured interiorly on each sidewall of the bowl structure to engage a guide roller, rotatably mounted on the ejector, for guiding the same during its movements in the bowl. Each guide rail assembly comprises a cylindrical guide rod secured on a respective sidewall by a pair of locating rods disposed on either side of the guide rod and welded between the guide rod and the sidewall. The guide rod is secured to the sidewall of the bowl structure by placing a first linear portion thereof adjacent to the sidewall and then placing first linear portions of the locating rods on either side of the guide rod to space it from the sidewall at a first predetermined distance.

Abstract: A Hooke's joint comprises four bearing cups received in openings in respective yoke arms and retained therein by respective retaining elements. At least one retaining element associated with each yoke has radially-projecting fingers which terminate in cutting edges and which are seated in a groove cut in the wall of the corresponding opening by rotation of the retaining element. There is also described a tool for contracting the retaining element to enable it to be inserted into the opening and for rotating the retaining element.

Abstract: In a Hooke's joint comprising two yoke elements interconnected by a connecting member, the connecting member has trunnions received in respective bearing cups which are fitted in apertures formed in the arms of the yoke elements. Each arm of each yoke element has a retaining element to retain the associated bearing cup in the opening of the arm. The retaining element on one arm of each yoke element is adapted to bias the associated bearing cup towards the centre of the joint; whereas the retaining element on the other arm of the yoke element is adapted to function as a rigid stop to limit movement of the associated bearing cup away from the centre of the joint but not to bias the bearing cup inwardly of the joint.