Showing papers on "Paddle published in 1979"
Patent•
03 Dec 1979
TL;DR: In this article, a power apparatus consisting of a plurality of paddle wheels arranged in tandem and intended to be positioned generally transverse to the direction of movement of water at the surface of a body of water, each of the paddle wheels having cylindrically curved blades which are concave on the blade face to be engaged and pushed by the water.
Abstract: The power apparatus includes a plurality of paddle wheels arranged in tandem and intended to be positioned generally transverse to the direction of movement of water at the surface of a body of water, each of the paddle wheels having a plurality of cylindrically curved blades which are concave on the blade face to be engaged and pushed by the water. Belt-like means mechanically couple the paddle wheels together to a power utilization device.
48 citations
Patent•
10 May 1979
TL;DR: A breakwater for breakwater as mentioned in this paper is a structure for breaking the force of waves to protect harbors and beaches and generate electrical power from the waves, which is used to protect beaches and harbors.
Abstract: A breakwater for breakwater for breaking the force of waves to protect harbors and beaches and generating electrical power from the waves. The breakwater includes a sloped front wall so that the waves break upwardly along the wall. One or more passages extend through the breakwaver to a lower elevation on the harbor side. Paddle wheels or turbines are disposed in said passages. The force of the waves drives water through said passages and the receding water falling down the face of the wall flows through said passages to provide power to drive the paddle wheel or turbine which, in turn, is connected to drive a generator.
36 citations
Patent•
08 Aug 1979
TL;DR: In this paper, a device for measuring the density of a liquid relies on the generation of resonant modes in a torsional vibration set up in a paddle which is immersed in the liquid.
Abstract: A device for measuring the density of a liquid relies on the generation of resonant modes in a torsional vibration set up in a paddle which is immersed in the liquid. The frequency at which a resonance mode, usually a fundamental, is produced is a function of the density of the liquid. A feedback circuit is described which varies the frequency of an oscillator producing the vibrations so as to enable the frequency at which the resonance mode exists to be automatically found. Transducers for generating and detecting the torsional vibration are located at one end of a rod above the surface of the liquid, and the paddle is mounted on the other end of the rod.
28 citations
Patent•
[...]
21 Feb 1979
TL;DR: In this article, a plastic paddle of unitary construction defining a hand grip with a wrist engageable portion at one end, and a blade portion at the opposite end, which blade has a tapered cross sectional shape with flanges defined along its marginal edges to achieve maximum strength from a minimum material, and the paddle material itself being formed of plastic to a uniform thickness for economy in manufacture.
Abstract: A plastic paddle of unitary construction defining a hand grip with a wrist engageable portion at one end, and a blade portion at the opposite end, which blade has a tapered cross sectional shape with flanges defined along its marginal edges to achieve maximum strength from a minimum material, and the paddle material itself being formed of plastic to a uniform thickness for economy in manufacture.
17 citations
Patent•
30 Mar 1979
TL;DR: A paddle or bat for hitting a ball has a head formed by a rigid layer, a network of open mesh strands on the layer and an elastically deflectable sheet in front of the network and forming a surface for hitting the ball.
Abstract: A paddle or bat for hitting a ball has a head formed by a rigid layer, a network of open mesh strands on the layer and an elastically deflectable sheet in front of the network and forming a surface for hitting a ball. When a ball is hit, the sheet deflects through the network and engages the base layer's front surface. The contact between the parts and its location can be used to actuate a signal for indicating a score.
17 citations
Patent•
12 Mar 1979
TL;DR: In this article, a canoe and paddle support is used to facilitate attachment of paddles to a canoe for storage, auto transport, and particularly portaging of the canoe, with a body made of a resilient material.
Abstract: A canoe and paddle support to facilitate attachment of paddles to a canoe for storage, auto transport, and particularly portaging of the canoe. The invention has a body preferably made of a resilient material. The body has a lateral slot adapted to removably retain the thwart of a canoe, a longitudinal slot adapted to removably retain a canoe paddle and oriented in approximately perpendicular relation to the lateral slot, so that the paddle is held in an orientation approximately longitudinal with respect to the center line of the canoe, and a carrying surface facing downwardly when the thwart and the paddle are retained in the lateral and longitudinal slots and the canoe is inverted, the carrying surface being adapted to provide a convenient path for transmitting the weight of the canoe to the shoulders of the person transporting the canoe. The paddle supports are preferably used in pairs for securing each paddle to two spaced thwarts of the canoe and provide, in combination with the canoe and paddle, a stable support structure.
14 citations
Patent•
16 Jul 1979
TL;DR: In this article, a pair of colinearly movable, reciprocating paddles for bumping the side edges of sheets flowing serially along a feed path is disclosed, which can be used to establish registry between the sheets and the plate cylinder of an offset printing press supplied with the sheets.
Abstract: A pair of colinearly movable, reciprocating paddles for bumping the side edges of sheets flowing serially along a feed path is disclosed. The sheets travel between the reciprocating paddles in a direction generally perpendicular to paddle movement. The paddles jog the sheets into a correct alignment position to establish registry between the sheets and, for example, the plate cylinder of an offset printing press supplied with the sheets. The distance between each paddle and the sheet feed path centerline can be adjusted during reciprocating movement of the paddle to meet registry requirements. A disengagement mechanism permits separate use of either paddle.
13 citations
Patent•
26 Nov 1979TL;DR: The game board game as discussed by the authors is a game in which each player utilizes a racquet, a paddle, or a hand to propel a ball onto a game board with three playing surfaces.
Abstract: The invention comprises a game in which each opposing player utilizes a racquet, a paddle, or a hand to propel a ball onto a game board apparatus having three playing surfaces. These playing surfaces are related to one another at angles which are within a specified range. The rules of the game require that the ball come into contact with the surfaces in a specified order both while serving and during play. The game utilizes a game board that may be incorporated into furniture, may be wall mounted, or may be on a free-standing base.
12 citations
Patent•
19 Oct 1979
TL;DR: A flexible paddle wheel as discussed by the authors is a wheel structure consisting of a pair of axially spaced wheels, having flexible rims, such as pneumatic tires, with pairs of radially spaced, transverse, flexible members extending between, and attached to, the rims.
Abstract: A flexible paddle wheel structure comprises a pair of axially spaced wheels, having flexible rims, such as, for example, pneumatic tires, with pairs of radially spaced, transverse, flexible members extending between, and attached to, the rims. A flexible membrane extends between the transverse members in each pair to form a flexible paddle. The wheels can tilt relative to each other and the whole structure can be arranged to be lifted and lowered.
9 citations
Patent•
25 Jan 1979
TL;DR: The floating hydro-power unit is intended for electric power generation from the flow of river water as mentioned in this paper, it comprises at least three pontoons which are laterally interconnected by members and paddle wheel rotor on shafts and are anchored by cables secured to them.
Abstract: The floating hydro-power unit is intended for electric power generation from the flow of river water. It comprises at least three pontoons which are laterally interconnected by members and paddle wheel rotor on shafts and are anchored by cables secured to them. The water-tight pontoon may contain piston pumps driven by the rotors via discs and cranks. They may contain a pressure vessel and an intake water vessel for the pumps and a turbine together with safety valve for the pressure vessel, dry-run protection and adjusters to maintain constant water level.
8 citations
Patent•
10 Sep 1979
TL;DR: In this article, an elongated passage formed within the paddle structure is shaped to permit the ball and string to swing through the paddle and in a preferred form has generally a key hole shape.
Abstract: A paddle toy comprised of a ball and string and having an elongated passage of length greater than the combined length of the ball and string. The string is attached at one end to a cross bar located in the upper portion of the paddle and is attached to a ball at the other end. The elongated passage formed within the paddle structure is shaped to permit the ball and string to swing through the paddle and in a preferred form has generally a key hole shape. In alternate embodiments, the invention is provided with means for varying the size of the elongated passage to regulate the skill required. The object of the toy is to impart a centrifugal force to the ball to keep it rotating about the cross bar and through the elongated passage in the paddle.
Patent•
21 May 1979
TL;DR: The relationship of the playing surfaces enables a greater arc of stroke by a player, thereby permitting a struck ball to be propelled with a greater velocity as mentioned in this paper, and also allows a player to strike a ball in a more forward position, thereby making it easier for the player to keep his eye on the ball.
Abstract: This relates to game rackets, such as tennis rackets, and to paddles, such as table tennis paddles, with two discrete playing surfaces wherein the planes of the playing surfaces intersect each other generally at the crown portion of the racket head or paddle blade. This relationship of the playing surfaces permits a greater arc of stroke by a player thereby permitting a struck ball to be propelled with a greater velocity. It also permits a player to strike a ball in a more forward position thereby making it easier for the player to "keep his eye on the ball," with a resulting better ball control.
Patent•
16 Apr 1979
TL;DR: A water wheel as mentioned in this paper consists of a disc made up of a pair of side walls spaced apart in their center area and joined at their peripheries to define a cavity for propulsion.
Abstract: A water wheel for providing both flotation and propelling forces. The water wheel includes a disc made up of a pair of side walls spaced apart in their center area and joined at their peripheries to define a cavity. Paddle members are fixed to the outside of the disc, and have a curved working surface for acting against water as the wheel rotates. The leading edge of the paddle members cuts into the water without creating turbulence, and water flow over the rest of the paddle member is smooth.
Journal Article•
Patent•
[...]
02 Jan 1979
TL;DR: A paint stirrer paddle comprising a long, narrow, corrosion-resistant metal blade having lengthwise thereof portions displaced from the plane of the blade, said portions being concavo-convex in transverse sections, of different length and of different width.
Abstract: A paint stirrer paddle comprising a long, narrow, corrosion-resistant metal blade having lengthwise thereof portions displaced from the plane of the blade, said portions being concavo-convex in transverse sections, of different length and of different width, and the part of the blade containing the displaced portion of lesser width and length constituting the handle of the paddle.
TL;DR: Compared to the swim fins the paddle propulsion system reduces the oxygen requirements nearly by 40%, at the optimum travel speed, and consequently has a propulsive efficiency 1 6 times as high.
Abstract: This study is an attempt to analyse man as a self-propelled underwater vehicle in order to define the optimum levels of his muscular work that would minimize the oxygen consumption needed for underwater paddle propulsion. Such an attempt is essential to the efficient operation of man in the sea. The optimum parameters namely: the travel speed, range, oxygen consumption and propulsion efficiency are determined for different travel depths and quantities of air reserve. These parameters are compared with those of existing muscle-operated underwater propulsion systems in order to show the potential of the paddle propulsion system as a good means for augmenting man's underwater locomotive capabilities. Compared to the swim fins the paddle propulsion system reduces the oxygen requirements nearly by 40%, at the optimum travel speed, and consequently has a propulsive efficiency 1 6 times as high.
Patent•
22 Nov 1979
TL;DR: Paddle blades are either attached to the aircraft wheel or formed in the wheel casting itself as discussed by the authors, and they are so shaped that the profile of the lower half presents a greater resistance to the airflow that the upper, thus causing the wheel to rotate before contact with the runway.
Abstract: Paddle blades (3) are either attached to the aircraft wheel or formed in the wheel casting itself. They are so shaped that the profile of the lower half presents a greater resistance to the airflow that the upper, thus causing the wheel to rotate before contact with the runway. If separate from the wheel casting, the blades may be in metal, plastics or ceramic. The principle is the same as that in certain types of anemometer, the blades being shaped as hemispherical cups.
Patent•
14 Aug 1979
TL;DR: In this paper, the purpose is to feed one layer of laminated paddle holders intermittently and to insert the coated paddles into tubes at a time, by means of paddle holders each having cuts, hollows and paddle plugs for coating paddles with a medium used for culturing microorganisms.
Abstract: PURPOSE:To feed one layer of laminated paddle holders intermittently and to insert the coated paddles into tubes at a time, by means of paddle holders each having cuts, hollows and paddle plugs for coating paddles with a medium used for culturing microorganisms CONSTITUTION:The paddle holder 3 is a square as a whole and has a pair of facing walls 43 to be lifted The walls 43 have the cuts 48, and a plurality of laminated paddle holders 3 above the bottom are lifted by the noses of the lifting unit to supply the bottom one to the intermittent feeder containing the coater The holder 3 is advanced by the noses of the feeder fitted into the hollows 49 by a given distance The paddles 2 coated with a medium are pushed from the holder 3 into tubes by the detachable paddle plugs 142
Patent•
27 Feb 1979
TL;DR: In this paper, a working deck and angularly displaceable paddles are mounted for repeated to and fro movement about pivotal axes along a portion of the working deck to urge the particulate material over the deck, each paddle being seen as a sector of a circle when viewed along the pivotal axis.
Abstract: Loading equipment for particulate material comprising a working deck and angularly displaceable paddles mounted for repeated to and fro movement about pivotal axes along a portion of the working deck to urge the particulate material over the deck, each paddle being seen as a sector of a circle when viewed along the pivotal axis.
Patent•
05 Feb 1979Abstract: A furnace paddle adapted to hold semiconductor wafers therein and having means attached thereto for supporting the paddle for movement along the inside of a cylindrically-shaped tube of a semiconductor processing furnace has means attached to the paddle adjacent the supporting means for limiting the lateral movement of the supporting means up the inside wall of the tube. The means includes a guide wing having two ends for contacting respectively the inside wall of the tube at intersecting points of a chord thereof and having a stem attached to the paddle adjacent the supporting means for maintaining the ends proximate the inside wall of the tube.
Patent•
09 Jul 1979
TL;DR: In this paper, a device for verifying instrument readings of transient force of a moving fluid column including a paddle depending from a taut wire torsion bar is presented. Butler et al. demonstrate that the device is adaptable to instruments utilizing fluid pulses in testing objects for resistance or vulnerability to fluid stream pressure.
Abstract: A device for verifying instrument readings of transient force of a moving fluid column including a paddle depending from a taut wire torsion bar. The unit is adaptable to instruments utilizing fluid pulses in testing objects for resistance or vulnerability to fluid stream pressure, e.g. ophthalmic tonometers. With disposition of the paddle in an instrument fluid path and a known torsional force applied to the supporting wire, the force required of a fluid column to displace the paddle may be established for verification of instrument readings and/or indication of defective instruments.
Patent•
02 Feb 1979
TL;DR: The paddle wheel is driven by a horizontal shaft which is splined to the wheel hub as discussed by the authors, and each paddle has a bevel gear at the inner end which meshes with the crown wheel around the shaft end.
Abstract: The paddle wheel is driven by a horizontal shaft which is splined to the wheel hub. Each paddle has a bevel gear at the inner end which meshes with the crown wheel around the shaft end. The inner end of each paddle has a thrust bearing assembly which allows the rotation of the paddle. The paddles rotate about their axes as the wheel rotates so that each paddle blade is feathered when it comes out of the water.
Patent•
15 Aug 1979TL;DR: In this paper, a manure spreader paddle attachment is disclosed wherein a flexible extension is attached to the trailing face of the paddle to provide a capability for scooping up and discharge liquified material yet deflects when the paddle encounters tough pen-packed material.
Abstract: A manure spreader paddle attachment is disclosed wherein a flexible extension is attached to the trailing face of the manure spreader paddle. This extension covers the outer peripheral toothed edge of the paddle to provide a capability for the paddle to scoop up and discharge liquified material yet deflects when the paddle encounters tough pen-packed material to permit the teeth to engage, shred and discharge the more solidified material.
Patent•
15 Feb 1979
TL;DR: The amphibious conversion for a bicycle has floats at the ends of adjustable struts to adjust the stability as discussed by the authors, and adjustable paddles on the rear wheel are provided for propulsion.
Abstract: The amphibious conversion for a bicycle has floats at the ends of adjustable struts to adjust the stability. Adjustable paddles on the rear wheel are provided for propulsion. The machine can be fitted with a small motor and can also be designed as a tandem. The adjustable struts provide max. stability in a wide range of surface waves. The whole conversion is demountable and can be carried in a small space.
Patent•
31 May 1979
TL;DR: In this article, the attachment of a paddle to the shaft of an annular tray mixer allows for its easy adjustment in two planes plus an angular adjustment, which facilitates all adjustments during assembly or for wear.
Abstract: The attachment of a paddle to the shaft of an annular tray mixer allows for its easy adjustment in two planes plus an angular adjustment. The round shaft is clamped between a U-bracket and a cradle an can be turned and/or lowered or raised. In addition, the Y-bracket shell has elongated holes so that it can be readjusted (with the cradle) angularly. This facilitates all adjustments during assembly or for wear.