Showing papers on "Paddle published in 1981"

Elective Cardioversion: Influence of Paddle-Electrode Location and Size on Success Rates and Energy Requirements

Abstract: We compared the success rates and energy requirements of two electrode-paddle positions (anteroposterior vs. anterolateral) and different paddle sizes in the elective cardioversion of atrial arrhythmias. We prospectively studied 173 patients - 111 in atrial fibrillation and 62 in atrial flutter. The anterolateral paddles used were either two standard-size (8.5-cm diameter) paddles or one 13-cm diameter anterior paddle with one standard-size lateral paddle. The anteroposterior paddles used were either a standard-size or a 13-cm anterior paddle with 12-cm posterior paddle. Overall cardioversion success rates with either paddle position were similar (greater than 90 per cent). The larger paddles did not significantly reduce energy requirements for cardioversion of either arrhythmia. We conclude that anterolateral paddles are as effective as anteroposterior paddles for the elective cardioversion of atrial arrhythmias, and that there is no demonstrable advantage to using paddles that are larger than the standard size in either position.

Paper sheet accumulator assembly

Abstract: A paper sheet accumulator assembly for receiving paper sheets to accumulate the same to be ready for collective dispensation. The paper sheet accumulator assembly includes a plurality of paddle wheels each having a plurality of paddles overlapping each other. Paper sheets fed by a conveyer between the paddles as the paddle wheels rotate. A guide belt assembly is provided adjacent to the paddle wheels to restrain the free movement of the trailing ends of the paper sheets and to prevent the paper sheets from slipping out the paddle wheels. The guide belt assembly is driven to move at a speed substantially equal to the circumferential speed of the trailing free ends of the paddles so as to facilitate smooth travel of the paper sheets carried by the paddle wheels. The paper sheet accumulator assembly further includes a scraper plate disposed below the paddle wheels for scraping the paper sheets away from the paddle wheels, and a carrier plate for receiving the paper sheets scraped from the paddle wheels.

Water powered electric generator

Abstract: An apparatus for efficiently converting the power of running water to useful electrical energy; the apparatus including a pair of floating pontoons anchored in a running stream, and between which a plurality of paddle wheels, rotated by the water, drive a gear mechanism connected to an electric generator, and ducts under the pontoons converging toward the paddle wheels, for concentrating more water flow thereto.

Platform tennis paddle

Abstract: An improved platform tennis paddle is provided that is constructed with two outer laminated ply structures and inner laminated ply structure therebetween The inner laminated ply structure has a central aperture therethrough which in the preferred embodiment is filled with a resilient plug The edge of the paddle is protected by a T-shaped molding fitted in to the perimeter of the paddle, and to safeguard against de-lamination the handle is of pegged construction

Paddle game apparatus

Abstract: A paddle apparatus (10) for use in a paddle ball game is disclosed. The apparatus (10) includes a generally planar paddle member (14) mounted at one end of an elongated handle (20) or grasping member. At the opposite end of the handle (20) a frame (34) having a stocking member (40) suspended therefrom is mounted. In a preferred embodiment, the frame (34) and paddle member (14) can be substantially coplanar.

Continuous polymerization of trioxane

Abstract: PURPOSE:To continuously polymerize trioxane stably and efficiently, by employing a continuously agitated reactor in which a plurality of pairs of paddles are provided in an axial direction and the reaction mixture is transferred in a specified manner. CONSTITUTION:A reactor is constructed by (A) providing shafts 1 and 1' in the centers of drums 2 and 2' which are arranged parallel so that they overlap partially with each other, (B) mounting on the shafts 1 and 1' in the longitudinal direction, a plurality of pairs of convex lens-shaped paddles 4 and 4' (these paddles are synchronized so that they rotate while maintaining a slight clearance between a tip of one paddle and the side of another paddle and a clearance between a tip of one paddle and the inner wall of the drum 2) and (C) varying the shape and arrangement of the paddles, so that the transfer efficiency of the reaction mixture decreases gradually with the advancement of the reaction mixture from a material inlet port 5 to a product discharge port 6. The clearance between the tip of a paddle 4 or 4' and the drum 2 is preferably below about 2% of the diameter of the external circle of the paddle, and the clearance between the tip of one paddle and the side of another paddle is preferably below about 5 times the above clearance.

Rotating paddle bin level indicator

Abstract: Apparatus for indicating the level of flowable material in a storage bin comprising a motor rotatably suspended by a spring within a protective enclosure and a drive shaft coupled by a ball-and-detent clutch to a paddle disposed within the bin to engage material therein. When the material reaches the level of the paddle, the drag on the paddle causes the motor to rotate within the enclosure and thereby to activate a switch disposed within the enclosure and coupled to the motor. A spring returns the motor to the switch-deactivated position when the material level decreases and the consequent drag is removed from the paddle. Electronic circuitry disposed within the housing includes field-selectable fail-safe circuitry for indicating either a high or a low material condition in the event of a power failure or the like independently of actual material level.

Paddle ball racket with adjustment for flexing

Abstract: Paddle ball racket with flexing adjustment. A paddle member has a handle portion. First and second metal plates shaped like the handle portion are mounted on the sides of the handle portion. First and second screws are mounted in the upper portion of the plates and a third screw is mounted in the lower portion of the plates to squeeze the plates together against the handle portion of the paddle. Whereby, the screws may be adjusted to adjust the flexibility of the paddle and therefore the hardness or softness of the shot.

Granulator and improved feed means therefor

Abstract: A granulator primarily intended for the granulation of plastic scrap material in which a pair of meshed paddle rolls serve as a combination metering and feed device through which such plastic material is fed to the granulator. The paddle rolls are mounted in such a manner and driven by drive means which enable one of the paddle rolls to move laterally away from the other paddle roll including an angular or skewed relationship yet while still maintaining an articulated; that is, synchronized, movement of the paddle rolls in relationship to each other.

Buttonhole paddle switch position sensing arrangement in a sewing machine

Abstract: An electronically controlled multiple pattern sewing machine is provided with an arrangement which senses when the buttonhole paddle and buttonhole presser foot are not properly positioned at the time a buttonhole pattern is selected to be sewn. Under these circumstances, an alarm is activated and stitches are not formed even though the operator may attempt to sew.

Self timing aid for swimmer - has stop-watch mounted on paddle with wrist and finger loops, and viewing opening

Abstract: The device to enable a swimmer to time himself consists of a stopwatch (2) mounted on a paddle (1) or similar flat surface. The paddle has a small resilient loop (3) at one end, for insertion of a finger, and a larger loop (3') for insertion of the wrist. The back of the watch is on the same side as the two loops, so that when the paddle is attached to one hand by the loops, the watch is covered by the palm of the hand. This enables the controls (2B) to be easily operated by e.g. the thumb. The dial (2A) is viewed through an opening on the other side of the paddle.

Floats for propulsion over water - with rider having foot in each buoyant boat-shaped float and using paddle

Abstract: Each float is boat shaped and has a pocket to take the rider's foot. The pocket is fitted with a strap to hold the foot into place. The front and the rear ends of the float are closed in to ensure buoyancy. The floats may be fitted with a centreboard and a hinged feathering flap to prevent backward motion. The sides of each hull may be fitted with fixed protruding floats and the craft is propelled with a paddle or 'ski' sticks.

Drum mixer - with paddle mixer shaft revolving without or with drum for gentle action

Abstract: Drum-type mixer for solid and liq. components of a mixt. e.g. in the prepn. of resin moulding materials with an admixture of glass, asbestos or silicate fibres, is fitted with a coaxial separate drive for a paddle mixer shaft. A coupling permits the drive of either just the paddle mixer shaft or of the shaft jointly with the drum case. The latter alternative ensures a gentle mixing action which prevents any additional size redn. of delicate fibres.

Head load mechanism for flexible magnetic disc device

Abstract: PURPOSE:To accurately control a head load speed, by commonly providing a magnetic head which is loaded or unloaded to a magnetic disc by the swithcing of head arm CONSTITUTION:A paddle 3 at the tip of the screw shaft 2 is shown in Figure With this state, the tip of the paddle 3 is engaged to the tip of the head arm 10, and lifted upward, resulting in the deformation of a plate spring 11 and the inclination of the head arm 10 upwards Thus, the 2nd magnetic head 9 provided at the head arm 10 is lifted upward and the magnetic disc 6 is released from the pressure by both magnetic heads 8, 9 In this case the magnetic heads 8, 9 are in the unloaded state

Self-restoring, torque-limiting, torque-transmitting linkage

Abstract: A self-restoring torque-limiting torque-transmitting linkage, for the rudder arm and rudder which drive the pin-moving paddle of an automatic pin setting machine for a lane of a bowling alley, will yield to permit that paddle to be moved if it is engaged by a bowling ball which is exiting from the area at the rear of that lane. That linkage has a first rotatable member and a second rotatable member which normally are held for conjoint rotation by a spring. The first rotatable member is rotated by an eccentric pin on a pulley of the automatic pin setting machine, the second rotatable member is secured to the rudder arm of that automatic pin setting machine to effect rotation of that rudder arm, and the spring normally forces the second rotatable member, and hence the rudder arm and rudder and paddle, to rotate with the first rotatable member. If a bowling ball applies a predetermined force to the paddle, the spring will permit that paddle, the rudder, the rudder arm and the second rotatable member to move independently of the rotation of that first rotatable member. After that force disappears, the spring will again force the second rotatable member, and hence the rudder arm and rudder and paddle, to rotate with the first rotatable member.

Spiral fluidized bed burning apparatus

Abstract: PURPOSE:To treat material to be burned at a low cost with a high efficiency through a promoted agitation to be mixed with a heat medium by recrushing the material left crushed insufficiently in the pretreatment process with the rotation of a paddle feeder. CONSTITUTION:When remaining too large down at the bottom of a spiral fluidized bed due to insufficient crushing, some of the material to be burned dumped from a charging inlet is stirred to be mixed with a heat medium 2 being recrushed through a clearance of a paddle 5 and a paddle feeder trough 3. Then, it is evenly mixed with a heated pressure air being injected from an orifice nozzle 4 and returned into the upper portion of the spiral fluidized bed for complete combustion. Material left unburned in those burned is mixed with the heat medium 2 and carried out to a discharging tube 16 with the rotation of a paddle feeder shaft 6. At the same time, the heat medium 2 is separated from the material unburned and conveyed to a separator from a heat medium discharging tube 18 and then returned into a furnace body 1 through a heat medium return tube 19.

Paint tone matching device - with common toothed rim driving pinions on vertical paddle mixer shafts

Abstract: A device for the tone matching of paints consists of a carrier disc on which a circle of containers for the blending paints are mounted. Each container is fitted with a paddle mixer on a vertical shaft which enters from the bottom through the carrier disc. Each shaft has at the free end a pinion which is in engagement with a common toothed rim below the carrier disc. Arrangement ensures a perfect homogenising of the paint paste and a complete drainage from the bottles.

Timing measuring tool for swimmer

Abstract: PURPOSE:To ensure the operation of the start/stop of a timing unit by the swimmer himself under swimming, by securing a steady attachment of the timing unit onto the swimmer's palm. CONSTITUTION:A window part is provided to the mount body 1 which is formed into a band, paddle or glove. And the display screen of the timing unit 2 is fitted to the window part, and then the main body of the unit 2 is covered with the palm part. At the same time, both the finger and arm parts are fixed to the body 1 via the fixing tools 3 and 3'.

Fluid mixing tank - with paddle mixer in bottom and flow breaker blades near top

Abstract: Device for mixing fluids, esp. gas with a liq. of low viscosity, for use in the chemical, pharmaceutical and micro-biological industry, has a motorised paddle mixer at the bottom of the vertical tank. Flow breakers are fixed on rods, suspended from the domed top. They consist of blades with the concave surface facing the circulating liq. which can be turned around their axis and fixed. The ratio of the height of each blade to its length in the horizontal plane is less than unity. Intensive mixing is achieved by convection in a constant circulation flow. Appts. can be mfd. at low cost.

Water weed cutting and/or clearing vessel.

Abstract: This invention is a vessel for cutting and/or clearing water weed which vessel can be propelled by paddles one at each side of the hull, each of which is capable of propelling the vessel both in a first position (15) at one side of the hull and in a second position (25) beyond one end of the hull and within a surface is a combination of the side of the hull. Each paddle is mounted on an up-and-over arm (1) which can be operated by hydraulic actuator (10) and can be rotated about its axis when in the vertical position (26). In the first position the vessel is easily manoeuvrable; in a second position (25) of the paddles, the vessel has a substantially reduced overall width.

Aircraft anemometer for correction in weight measurement - senses wind speed and direction for on board computer calculating take off weight and centre of gravity

Abstract: A vertical vane is attached by a flexible strip to an element fixed to a hollow shaft. The vane rotates the shaft which drives the rotor in a stator of an angular position sensor. The flexible strip is supported by a ball on the cap on a solid shaft inside the hollow shaft in which it moves longitudinally. It is supported at the other end by a flexible spring. This enables the force exerted by the wind on an oblique surface to move a magnetic paddle. This transmits the measurement through a stator of an inductive linear displacement sensor. The detector is enclosed in a case with a fixing flange enabling it to be mounted on an aircraft. The sensor outputs giving wind speed and direction are transmitted to a computer with data from sensors on the undercarriage to permit precise calculation of weight and c. of g.

Rotor driven buoyant toy

Abstract: An inverted generally saucer-shaped buoyant toy, containing a battery powered motor, driving a paddle wheel-type rotor, generates movement of the toy with respect to the body of water in which it floats.