Showing papers on "Paddle published in 1985"

Systems and methods for ion implantation of semiconductor wafers

Abstract: A dual mechanical movement scanning system for ion implantation includes a radial scan arm which is mounted at a fixed pivot point external to the system vacuum chamber and penetrates the chamber and supports the wafer paddle or wheel within the chamber. The fast-scan component is provided by rotation of the paddle on the support arm; the slow-scan component is provided by pivotal movement of the scan arm itself. The drive system which reciprocally pivots the radial scan arm is configured geometrically so that controlled movement of one arm of the drive system is translated as l/r velocity of the rotational axis relative to the beam path. The wafer paddle can be constructed to provide a variable implant angle and to use a component of centrifugal force to hold the wafers in place without clamps or other mechanical means.

Apparatus and method for packaging compressible pouches

Abstract: Elongated rectangular pouches are longitudinally compressed for packing in a conventional packing case by a pair of counter-rotating paddle assemblies. Each paddle assembly has four paddles arranged in staggered relationship around an associated shaft, the shaft being located outside of and slightly below the path of movement of the pouches as the pouches move in side-by-side relationship between two upright paddles. Two horizontally arranged adjacent paddles receive the pouches at a load station, and rotation of the paddle assemblies drops the pouches between the paddle assemblies as these two paddles move into depending vertical positions where they are more closely spaced relative to one another than the upright paddles in order to compress the pouches as the pouches drop into the case.

Paddle handle accessory

Abstract: A handle for attachment to the shaft of a paddle to improve the efficiency and comfort of paddling The handle having a grip portion and spaced outwardly extending arms on the grip portion The arms are coupled to the paddle shaft so that the handle is swingable about the paddle shaft and positioned at an angle with respect to the longitudinal axis of the shaft

An icecream-making household appliance incorporating an automatic stirring paddle stopping device

Abstract: The household appliance disclosed comprises an icecreaming vessel wherein an icecreaming paddle is active which is driven by an electric motor and a device for automatically stopping the action of the paddle. That device includes means of sensing the icecream consistency by measuring the electric current drawn by the electric motor. Such means are operative to drive a switch element in the supply circuit to the electric motor to open on reaching a preset current value.

Single stage snowthrower

Abstract: An improved single stage snowthrower (2) includes an open front portion (14) having a rotatable impeller (30) contained therein. Impeller (30) contains at least one outwardly extending paddle (32) having a complex curved shape. Paddle (32) includes a central snowthrowing section (34) which is curved forwardly from its midpoint to each side thereof to be concave with this central section (34) extending over at least the middle 50 percent of the entire paddle's length. Two end sections (36) fill out the remaining length of paddle (32) and are shaped to function as augers for moving a relatively small volume of snow inwardly onto the central snowthrowing section (34). Improved impeller (30) can be used with an inverted funnel-shaped collecting chamber (22) located in the rear wall (18) of front portion (14) of snowthrower (2). Collecting chamber (22) is sized and shaped to approximate the size and shape of the inwardly tapered stream which is thrown off central section (34).

Multi-function apparatus for testing a sample of material

Abstract: A compact, transportable apparatus includes test equipment for operating on a sample of slurry within a single container to determine the compressibility, thickening time, and static gel strength of the sample. The static gel strength test is particularly performed with a load cell vertically moved along a lead screw, which load cell is directly connected to a drive mechanism for driving a paddle at a very slow speed through the sample.

Positive stirring consistometer cup and method of using the same

Abstract: A positive stirring consistometer cup includes a pair of wall blade members having radially inwardly extending blades which cooperate with radially outwardly extending blades of a paddle to uniformly apply shear throughout a substance to be tested. A split sleeve assembly eliminates an outer dead space, and an enlarged spacer member mounted on the shaft of the paddle eliminates an inner dead space, thereby enhancing the uniformity of the shear throughout the substance. A centralizing assembly centers the stationary paddle while causing a minimum of friction and wear to occur on the shaft of the paddle. In a method of using the positive stirring consistometer cup, the blades of the wall blade members and of the paddle stop in substantially aligned, coplanar relationship to facilitate cleaning of the elements after a test is concluded.

Hand-held light filter

Abstract: The invention discloses a protective light shield to reduce the harmful effects of resin-curing lights used in dentistry. This is a shield made principally of a single sheet of filtering plastic, shaped in a convenient paddle configuration. The dimension of the filter-paddle is sufficient to block all direct and reflected light from the tooth of the patient that would possibly be seen by any personnel in the operatory. A portion of the paddle is provided with a magnifier which may be employed by the physician for closer inspection of the tooth being operated on. Additionally, a relatively thin intensity-filtering material is applied to the back of the light paddle so that the intensity of the filtered light is reduced for the increased comfort and protection of the physician.

Wave generator for waterbeds

Abstract: A wave generator for waterbeds comprises a paddle unit adapted for positioning on the horizontal mattress supporting surface of the bed frame between an edge of the mattress and a side panel of the frame and has a paddle extending to overlie the upfacing surface of the mattress. A pivoted arm supports the paddle and is reciprocated by an electric motor through pitman-like linkages to oscillate from a raised horizontal position to a downwardly inclined position whereby the paddle rhythmically depresses and releases the mattress creating waves in the surface thereof radiating from the paddle. A control box having an on/off switch, a speed control for the motor and a timer for the switch is interposed along wiring from the motor. The length of wiring between the motor and control box being sufficient to locate the control box for easy access by a user reclining on the mattress when the paddle unit is in operative position.

Evaluation of Time-Intensity Sensory Responses using a Personal Computer

Abstract: A method is presented which utilizes a personal computer to measure time-intensity (T-I) sensory responses. The judge uses a game paddle which moves an “X” along a fixed scale appearing on the monitor screen to indicate the attribute intensity at each instant in time. A clicker device on the game paddle can be used to record the occurrence of events such as initial mouth entry and time of swallowing. Data acquisition is continuous with the data stored on discs. This technique has advantages over strip chart recorder methods. Disc storage allows rapid and efficient data analysis. Judges can perform the evaluations virtually unsupervised with only minimal training.

Comparative Evaluation of Four Dissolution Apparatus

Abstract: Four dissolution methods, the rotating basket, the rotating paddle, the rotating basket with paddle and the stationary basket-rotating paddle, were evaluated using capsules and non-disintegrating pellets of salicylic acid. The agitation intensity produced by the rotating basket method was very low and differed significantly throughout the vessel. However, it did not differ significantly at different positions in the stationary basket-rotating paddle method. This method offered considerable advantages and hence appears to be a suitable alternative to the existing compendial methods which have limitations for evaluation of dosage forms which tend to float on the dissolution medium.

Paddle wheel feeder

Abstract: OF THE DISCLOSURE An apparatus for feeding individual substrates from the top of a stack of substrates upon demand includes a paddle wheel having paddles that are semi-cylindrical. The paddles buckle upon contact with the substrates rather than bending and thereby providing reduced normal force sensitivity to paddle deflection and reduced pressure since the force of buckling is a function of thepaddle cross-section rather than paddle length for all areas of the paddles except near the paddle wheel hub. The semi-circular blades reduce misfeeding and multifeeding while having an extended wear life.

Table ball game apparatus

Abstract: Apparatus is provided for enabling two or four people to play a competitive game involving skillful manipulative control of a ball on a horizontal game surface. The apparatus comprises a flat playing surface of substantially square perimeter supported by four legs adapted to maintain the playing surface at table height. A retaining wall is associated with each side of said perimeter, and at least one ball-receiving goal is associated with each retaining wall. An elongated sliding guide is positioned parallel to each retaining wall, and a paddle slidably engages each guide. The paddle, having a flat striking portion disposed below the sliding guide, and an elongated handle portion extending above the guide, can be rotated about the handle portion and pivoted about the guide. The striking portion of the paddle is utilized to hit a playing ball having the general characteristics of a table tennis ball.

Door closure apparatus for encapsulating a wafer paddle

Abstract: A door closure apparatus for processing a wafer paddle used to support microchips in a process tube using the chemical vapor deposition process. The device has a flexible joint which enables the sealing door to squarely seat against a processing tube whether or not the processing tube is correctly aligned. Further, the device has an adapter which enables paddles with variously shaped handles to be accepted in the standard processing tube as if the handles were round.

Water-sports appliance

Abstract: A water-sports appliance (1) according to the invention has a floating body (2) which is capable of easily skimming and can be propelled by means of arm paddles (7) and foot paddles (15). Here, it is possible to simulate, for example, the technique of cross-country skiing by diagonal use of in each case one arm paddle (7) and the corresponding foot paddle (15). To assist the equilibrium on the floating body (2), a balance device (4), preferably in the form of a balance mast (5), can be provided.

Stirring device for suspending solids and liquids

Abstract: Agitator for suspension of solids and fluids flues. In this agitator, the energy in the form of shear and transport forces is supplied by the rotation of a paddle, respectively the upper (2). Rota tion axis eccentric to the container floor center (7) gela Gert is, and to the stationary liquid level (10, 11, 12) is at an acute angle (30), and which form the paddle (6) during the rotation of the surface of a cone so that whose generatrix of the tank bottom in a low Di punching runs parallel resp. These contacts close.

Method for driving developing device of electrophotographic copying machine

Abstract: PURPOSE:To prevent waste of a toner and to enable refeed of a copying paper repeatedly in case of feeding a mistaken paper by disengaging the connection clutch of the paddle roll of a developing device at the time of feeding a mistaken paper. CONSTITUTION:Sprocked wheels 22, 23 are installed on developing rolls 7b, 7c and a paddle roll 7a, and a chain 26 engaged with these wheels 22, 23 transmits a driving force to the roll 7a through a joint 24 to rotate 7b, 7c, 7a in synchronism. So a toner sufficient for development is fed to the rolls 7b, 7c when these rolls are rotated. An electromagnetic clutch 25 is installed between the wheel 23 and the roll 7a. When paper feed is normal, the driving force to be transmitted to the wheel 23 is given to the roll 7a without being changed, but when a wrong paper is fed, the signal is turned off. Therefore, although the rolls 7b, 7c are rotating, the wheel 23 rotates idly, the roll 7a stops, and the toner is not fed to the rolls 7b, 7c.

Self-cleaning method and device for conveyance mixer

Abstract: PURPOSE: To prevent a material to be kneaded from adhering and hardening to aim at sustaining the performance of a mixer, by ununiformly rotating both rotary shafts to which paddles are planted being axially shifted from each other so that the phases of the paddles are changed relative to each other to carry out self-cleaning. CONSTITUTION: When shafts 1, 2 are rotated in the direction of the arrow at a ratio of 1:1.25, a paddle 3a makes into contact with a point (a) on the shaft 2 at the position A, a paddle 3b with a point (d) on the shaft 1 at the position D, the paddle 3b with a point (f) on the shaft 1 at the position F, the paddle 3a with a point (g) on the shaft 2 at the position G, the paddle 3b with a point (h) on the shaft 1 at the position H, the paddle 3a with a point (i) on the shaft 2 at the position I, the paddle 3b with a point (j) on the shaft 1 at the position J, and the paddle 3b with a point (k) on the shaft 1. Further, at the position L the paddles are returned to the original position A so that the paddles make into contact with the respective shafts, and thereafter, similar procedure is carried out. With this arrangement, scraping operation is effected between the paddles and at innumerable positions on the peripheries of the shafts, and the remaining parts may be completely cleaned due to the conveyance of a materials to be kneaded. COPYRIGHT: (C)1987,JPO&Japio

Method of loading and unloading a furnace

Abstract: A soft landing cantilever boat loader for loading semiconductor wafer carrying boats into a furnace process tube includes a loading station having one or more loading assemblies, an automatically controlled door associated with each loading assembly for selectively closing an end of the process tube and a microcomputer based control system for controlling and coordinating process operations. The loading assemblies are of a low profile configuration and each include a boat supporting, cantilevered paddle that is mounted by a quick release mechanism on a carriage which is driven along ways by a motor. A motor speed control circuit provides closed loop motor speed using a pulse width modulated motor drive. A door operating mechanism provides movement of the door along two transverse axes to assure tight sealing of the door against the tube. The control system employs a self-teaching technique that permits rapid reprogramming of the carriage travel limits which may be required when the paddle is replaced by a paddle of a different type or length.

Two terminal axial lead suppressor and diode device and method of making

Abstract: An axial lead bridge rectifier (1) includes four rectifying diode chips (5,12,15,17) and a large pulse suppressor chip (9) all disposed between the paddle sections (2B,3B) of two coaxial leads. Two of the diodes are solder-connected in series between the two paddle sections (2B,3B) with their anodes solder-connected to a first cantilever conductive strip (6) the opposite end of which is solder to one face of the pulse suppressor chip. The opposite face of the pulse suppressor chip is soldered connected to a second metal strip (10) which extends in cantilever fashion from a solder connection to the cathodes of the other two diodes, which are also solder connected to the first and second paddle sections, respectively. The portion of the assembly including the paddle sections of the two axial leads and the rectifier bridge circuit and pulse suppressor thereof are encapsulated in suitable glass, plastics or ceramic material out of which the two axial leads (3A, 2A) extend.

Team Paddle Tennis

Abstract: (1985). Team Paddle Tennis. Journal of Physical Education, Recreation & Dance: Vol. 56, No. 8, pp. 74-75.

Floating water-wheel generator

Abstract: PURPOSE:To obtain a simple and economical water-wheel type generator by floating the water-wheel type generator onto the water flow in a river and permitting power generation by utilizing the velocity energy of the water flow CONSTITUTION:A paddle water-wheel 5 is axially supported onto two floats 1 and 2 in the structure made of foamed styrene having a reinforcing core member, wooden ship type, FRP ship type, steel ship type, etc, and a rubber tire 9 for the first acceleration operation is pushed onto the outer side surface of the paddle water-wheel 5 A dynamo 11 is revolved at a certain speed through the second accelerator 10 and a stapless speed change gear 12, and the floats 1 and 2 are moored on the riverside through wires, ropes, etc, and transferred according to the water flow

An Evaluation of Paddle Fans as Used in Poultry Applications

Abstract: Alaboratory study was conducted to obtain performance characteristics for paddle type ceiling fans. Air velocities near the floor were obtained using three paddle fans with different diameters, 1.32, 1.42 and 1.52 m. Velocity data near the floor for the three fans were similar, especially for radial distances beyond 2.7 m. The paddle fans tested concentrated air movement near the floor with minimal effects at more than 0.3 m above the floor. Fan suspension heights of between 1.8 to 3.7 m had little effect on the air velocities produced near the floor.

Container for holding, transporting and mixing viscous, especially highly viscous fluids

Abstract: The invention relates to a container for holding, transporting and mixing viscous, especially highly viscous fluids with a motor-driven mixing paddle which is disposed on a shaft disposed eccentrically to the centre of the container and driven to produce a reciprocating movement, and the height of which paddle is smaller than the height of the container, a vertical arrangement of the drive shaft and an essentially square cross-section of the container being provided and the drive shaft being arranged in the centre of one of the four quadrants of the container.

Rescue, emergency, breakdown and signalling device associated with a basic element consisting of a retractable paddle

Abstract: The invention relates to devices of the scull/paddle/oar type, which may or may not be associated with one or more rescue or safety elements For the purposes of storage and space taken up, the paddle is folding and foldable, which enables it to be able to be totally retracted, if appropriate It comprises a "shovel" (spade) 25 articulated at 10 or 17, and which can be folded over onto the handle 1, made from a flexible material, the "shovel" also serving as a signalling element 31 The uprights/stiffeners 12 of the "shovel" are immobilised, the shovel open in the position of use of the paddle, by the handle 32 which encases the flanges 14 and 15, about a geometrically particular part 7 of the end (lengthening) piece 6 The end pieces 2 and 6 ensure the leaktightness of the handle 1, which also serves as a leaktight casing/container, while ensuring buoyancy, the end piece 2 receiving a "length of rope" 3 for breakdowns The distancing of the shovel is limited by a cable 28 which holds the shovel 25 in position and also acts as an anti-chafing device at the attachment points 29 and 30 The device according to the invention is intended particularly for rescuing windsurfers

Device for automatically kneading and applying paste in making plate for storage battery

Abstract: PURPOSE:To obtain products with a stable quality by minimizing variations in the amounts of a paste packed into plates for storage batteries by using a right- hand helix and left-hand helix dispensing paddle. CONSTITUTION:Grids 9 on a pasting belt 6 are sent into a pasting hopper 1 by means of a small roller 7 without fail before being caused to pass right under a paste 10 which is caused to rotate in a flow by means of pasting rollers 3 and 3' After that, an excess paste is scraped with a doctor knife 5, thereby making plates. A dispensing paddle 2 used in this invention consists of a right-hand helix and left-hand helix spiral paddle. Therefore, the packing pressre is equalized and variation in the weight of the plate is minimized.