Showing papers on "Paddle published in 1993"

Effect of paddle placement and size on defibrillation current distribution: a three-dimensional finite element model

Abstract: A realistic three-dimensional finite-element model (FEM) of the conductive anatomy of a canine thorax was constructed for use in the study of transthoracic electrical defibrillation. The model was constructed from a series of 21 cross-sectional computed tomography (CT) scans of a 14.5 kg beagle, each separated by 0.82 cm. The electrical conductive properties of eight distinct tissues were incorporated, including the anisotropic properties of skeletal muscle. Current density distributions were obtained for six paddle pairings and two paddle sizes. A quantitative basis for comparing the resulting distributions was formulated. The results suggest that placing one or both of the paddles near the heart delivers a higher fraction of current to the heart. However, such placements also produce a less uniform myocardial current density distribution and thus have a higher potential for causing damage. Some paddle positions produced myocardial current densities close to the threshold for damage in successful defibrillations. The results indicate that 12 cm paddles may offer modest advantages over 8 cm paddles in clinical defibrillation. >

Apparatus for thermally coupling a heat sink to a lead frame

Abstract: A molded plastic package for an integrated-circuit die includes a lead frame having inwardly extending tie bars and a central die-attach paddle. One side of the die-attach paddle has an integrated-circuit die fixed thereto. A heat sink member is resiliently fixed to the other side of the die-attach paddle using a layer of viscous thermal grease between the heat sink member and the other side of the die-attach paddle. At least one holes is formed through a portion of the lead frame and is engaged by a corresponding elongated stud on the heat sink. The elongated stud extends upwardly through the layer of thermal grease through the holes in the lead frame and terminates at the top of the molded plastic package. By extending to the top of the plastic package, the elongated stud firmly holds the heat sink against the bottom of the mold cavity during the encapsulation process. As a result, the bottom surface of the heat sink remains exposed after the encapsulation process.

Cellular phone shield

Abstract: A shielding device used on hand-held cellular phones comprises a substantially rectangular shield which extends adjacent to the antenna. A downwardly extending slide arm portion of the shield terminates in a substantially pointed end surface formed by the outer edge of the shield sloping inwardly to engage the inner edge of the slide arm, said outer edge having a notch on the exterior surface thereof. The device also includes a paddle arm portion extending perpendicular to the shield area and then downwardly to terminate in an enlarged paddle engaging the rear of the phone. The shield is mounted to a hand-held cellular phone with the shield area extending vertically upward adjacent to the antenna and the paddle arm extending over the top of the phone and terminating in the rear paddle and the paddle arm extending over the top of the phone. The shield is held in place by an O-ring which surrounds the phone and fits in the notch in the slide arm. The shield comprises polished aluminum while the slide arm and paddle arms are coated with plastic vinyl to enhance friction and prevent scratching of the phone surface. The shielding area deflects a majority of the radiation and simultaneously absorbs whatever is not deflected while physically blocking the user from actual contact with antenna when in use.

Basketball scoring apparatus

Abstract: A portable electronic scoreboard apparatus attachable to a basketball goal is disclosed. The apparatus comprises an electronic analysis and report mechanism capable of receiving input information, analyzing the information according to a mode of operation, and reporting output information which includes an indication of the number of successful shots and an indication of the shooting percentage. The apparatus also comprises an attempt detection means for detecting contact of a basketball with the basketball goal and sending a contact signal to the electronic analysis and report mechanism, and for detecting the successful passage of a basketball through the hoop and sending a passage signal to the electronic analysis and report mechanism. In a preferred embodiment, the contact signal arises in response to vibration of a piezoelectric vibration sensor, and the passage signal arises in response to movement of a paddle beneath the hoop by the basketball. Spurious passage and contact signals are preferably prevented by the use of a paddle filter and a vibration filter, respectively. The paddle is attached beneath the hoop by an attachment assembly which includes notched arms engaging a gear that is rotatable by a player. The arms have grooved feet for engaging the basketball rim plate. A releasable gear locking mechanism holds the arms in place to prevent the feet from being disengaged by repeated impacts of the basketball against the paddle.

Aquatic-weed removal machine

Abstract: An aquatic-weed removing machine is provided with a paddle wheel equipped with a hinged plate connected to the peripheral edge of each paddle in a manner such that as the wheel rotates, individual plates pivot from an inward folded position at the edge of the paddles to a radially extended one, falling downward by gravity as the wheel sequentially places the paddles in the lower forward quandrant of their cycle. By a combination of centrifugal force and weight, the plates are thrown into pressing contact with the top of an underlying, tangentially moving conveyor belt upon which uncut weeds are laid by forward motion of the machine in the water, causing the weeds to be tightly held on the belt and to be pulled out by the roots as both the belt and the machine continue in their directions of motion.

Computer video game pak display cabinet

Abstract: A display cabinet is provided for displaying two sides of a computer video game pak or similar merchandise in a secure enclosure. The display cabinet includes an elongated vertical enclosure unit or paddle with a set of spaced apart shelves between transparent facings or panels to form a set of vertically arranged compartments. The game paks or other merchandise are held within the compartments. The enclosure unit or paddle is pivotable back and forth in order to expose the transparent front and back facings of the paddle, thereby enabling the purchaser to view front and back sides of the merchandise, respectively. A lockable access door on the paddle is slidable between open and closed positions, and lockable in the closed position to provide security for the merchandise. Several enclosure units or paddles are pivotably mounted upon a frame by either a hinge or by pivot pins for either flipping or spinning the paddles for viewing. The frame may alternatively be either a self-standing frame, wall mounted frame, or carousel-type frame, and may further include a storage locker for stocking extra merchandise.

Vehicle locking arrangement accommodating misalignment of key - uses shaft with tapered paddle blades engaging grooves inside lock assembly

Abstract: The locking arrangement is for a vehicle. It incorporates a key consisting of a rotatable shaft (1) which is free to swivel through an angle (alpha), and has a driving paddle (13) on its end. The paddle has at least two blades (16) which engage in grooves in the inside of a housing (21). The blades on the paddle are tapered at the ends in order to accommodate the angle of tilt (alpha) of the shaft, and the outer surfaces (14) of the paddle blades are arcs of circles. The housing (3) of the locking arrangement has a conical entry portion (31) leading the end of the shaft (1) into the grooved housing. USE/ADVANTAGE - Vehicle locking arrangement accommodating misalignment of key.

Urinary collection device

Abstract: An inexpensive, disposable device for collecting a mid-stream urine specimen from a female donor which device can be used by the donor herself without professional help. The device comprises a container having two chambers, one for collecting and discarding the initial, unwanted portion of the urine flow and the other chamber for collecting and retaining the later, cleaner, portion of the urine flow. A pivoted "paddle" valve comprising two conjoined paddles is disposed between the chambers and--controlled by the flow of urine, itself--directs the first, contaminated, portion of the urine to the discard chamber and directs the remainder of the flow to the specimen chamber. Initially, one of the paddles covers and seals the specimen chamber to prevent urine from entering that chamber. The other paddle is suspended over the opening of the discard chamber. As the flow of urine begins, the paddle suspended over the discard chamber in the path of the flow of urine is pushed downward by the force of the leading flow of urine. The downward motion of the discard paddle causes the valve to turn like a paddle wheel. As the valve rotates, the paddle initially disposed over and covering the specimen chamber opens that chamber and continues rotating until it intersects and is stopped by the wall of the discard chamber. Thus, the paddle which initially closed the specimen chamber turns and closes the opening to the discard chamber and at the same time redirects the flow of urine into the specimen chamber. In short, the initial flow of urine striking the paddle over the discard chamber is collected in the discard chamber. At the same time this initial flow turns the valve, opening the specimen chamber and closing the discard chamber thereby directing the subsequent cleaner urine flow to the specimen chamber.

Electronic paddle game device

Abstract: An electronic paddle game device includes a paddle having a ball striking surface and a hand-gripable handle. A plurality of impact sensors are positioned about the impact surface of the paddle for selective impacting by an object such as a ball struck by the impact surface. An electronic audible output signal generating circuit generates an audible output signal to a speaker when an impact sensor senses impact with an object. The paddle may also carry light emitting devices for visually indicating that an impact target has been struck. A ball is preferably tethered to the paddle. The paddle includes a handle that is adapted to store the ball during non-use. A counter and LCD display may be provided to generate and visually display a score based on impacts sensed by the impact sensors.

Material handling apparatus

Abstract: An impeller assembly having a housing supporting a rotatable impeller. The housing has a bottom entrance opening and a top exit opening separated by a curved back wall. A liner of low friction and abrasion resistant plastic material located adjacent a portion of the inside of the back wall prevents material buildup on the back wall. The liner is removeably mounted on the housing so that it can be replaced without taking the housing apart. The impeller has a plurality of pivoted paddle assemblies. Each paddle assembly has a body carrying a generally U-shaped liner of low friction and abrasion resistant material to minimize the collection of material on the paddle assemblies. The housing includes a knife adjacent the entrance opening. The body of the impeller assembly has a transverse lip that moves in close relation relative to the knife to cut material.

Underwater paddle and vertical fin for swimmer

Abstract: A swimming aid includes a paddle with two blades for alternating arm strokes and a vertical blade attached to both feet for side to side leg motion in cooperation with the arm strokes. The two paddle blades are at opposite ends of a hand held shaft. Each blade has a rigid leading edge and a flexible following portion. When pushed forward, the blade lies in a plane for minimal hydrodynamic resistance. When pulled backward on a power stroke, the following portion bends out of the plane, creating increased hydrodynamic resistance for enhanced forward propulsion. This pulling action causes the legs to move laterally, alternating from side to side as the arm strokes alternate. A vertical blade has a narrow anterior portion with foot pockets for both feet side by side. The blade is widest at its trailing edge which may be forked and acts like a fish tail fin forcing the body forward. The propulsion is provided by the torso muscles moving the legs side to side not by leg muscles kicking as in swim fins.

Apparatus and method for thermally coupling a heat sink to a lead frame

Abstract: A molded plastic package for an integrated-circuit die includes a lead frame having a central die-attach paddle. One side of the die-attach paddle has an integrated-circuit die fixed thereto. A heat sink member is resiliently fixed to the other side of the die-attach paddle using a layer of viscous thermal grease between the heat sink member and the other side of the die-attach paddle. One or more holes are formed in the lead frame and are engaged by corresponding studs on the heat sink. The stud has a shoulder portion which engages the lead frame to prevent the stud from further passing through the hole in the lead frame.

Continuous kneading machine

Abstract: A continuous kneading machine capable of achieving selfcleaning, improvement in kneading efficiency, and reduction in abrasion of paddles is provided. This continuous kneading machine is characterized in that sectional shape of one paddle in a section perpendicular to a rotation shaft is formed of n (where n is an integer, and n≧2) pairs of major radius parts and minor radius parts which are alternately arranged with equal angle and formed by a gentle curve, and that sectional shape of another paddle is formed of m (where m is an integer, m≧2, and n≠m) pairs of major radius parts and minor radius parts which are formed by an escribed envelope curve drawn by rotation in cooperation with the one paddle, and in which rotation of another paddle is performed in a direction different from the one paddle at a different ratio of rotation frequency.

Method of transporting and blending slurries with an oscillating paddle system

Abstract: A method of transporting and processing a viscous slurry, mash, or insoluble in a liquid carrier wherein there is provided a container having a paddle system disposed therein, the paddle system configured to oscillate in a limited, back and forth fashion so as to lift and shift the fluid mass toward a center portion of the container interior via gravity, and to a bottom portion thereof for recirculation and blending. The method further includes a coupling piece connected to the paddle system, and a portable drive system, the method steps including transporting the container filled with the insoluble and liquid carrier, coupling the portable drive system to the coupling piece, and actuating the portable drive system for oscillating the paddle system via the coupling piece.

Recreational water craft

Abstract: A recreational water craft of uncomplicated design and construction is provided herein which is adaptive to be manually powered by one or more crew members or readily converted from manual power to sail (or supplement by sail) without loss of stability or increase in complexity of operation. This water craft possesses the attributes of a tri-hull and/or catamaran vessel, wherein the crew is supported and operates such vessel from a centrally located platform or main float which is connected to, and flanked on either side by, an outrigger float or pontoon. Each outrigger float is further provided with a vertical extension or riser to which is mounted an independently operated and manually powered paddle wheel. The paddle wheels, upon mounting to the riser, are positioned in the open wells located to the port and starboard sides of the platform and inboard of each of the outrigger floats. The paddle wheels each have a handle or hand grip on their inboard surface, which can be adjusted relative to the axis of rotation of each of such wheel, to accommodate the crew member's reach and his location on the main float, and thereby modulate the amount of force, and physical exertion, required to rotate the paddle wheel. Insofar as each of the paddle wheels is independently driven, the water craft's directional movement (steering) is determined by the relative amount of thrust created by rotation of either paddle wheel or by the counter-rotation of each such paddle wheel relative to one another.

Rotary internal combustion engine with paddle and ratchet assembly

Abstract: A rotary internal combustion engine, has an engine block defining a drum-shaped combustion chamber. A rotatable propeller shaft extends axially through the chamber. First and second paddle and hub devices are freely rotating on the propeller shaft at least substantially sealingly in the chamber, each of the paddle and hub devices having first and second paddles that are fixed diametrically opposite each other with a hub therebetween. The hubs cooperate with each other so that the first paddle and hub device can also rotate relative to the second paddle and hub device, the hubs of the first and second paddle and hub means having end portions respectively extending from axially opposite ends of the chamber. Each of first and second gear trains has (A) a first ratchet for rotationally connecting a respective one of the hubs to the propeller shaft in a first rotational direction and disconnecting the one of the hubs from the propeller shaft in a second, opposite rotational direction and (B) a second ratchet with a gear reduction for reducing rotational speed relative to the rotational connection of the first ratchet and rotationally connecting the propeller shaft to the one of the hubs in the first rotational direction with the reduced rotational speed and disconnecting the propeller shaft from the one of the hubs in the second rotational direction. An inlet in a first quadrant of the chamber admits air into the chamber. A nozzle admits fuel into a third quadrant of the chamber An outlet in a fourth quadrant of the chamber exhausts.

Table tennis paddle and ball holder

Abstract: A wall-mounted table tennis paddle and ball holder made of a durable plastic or other suitable material, compact in size having a rectangular box shape with approximate outer dimensions of 23/4' in depth, 93/4" in height and 16" in length. It consists of: A paddle-shape (less handle) paddle housing wall, which houses up to 3 conventional size paddles at either end; A "ball in"≈11/2" dia. opening above paddle housing area, at either end of upper part of front panel, for returning of balls to holder; A retractable ball housing/dispenser. Said housing/dispenser, which will house up to 6 conventional size balls, is located vertically in the center of holder between the two paddle housing areas and between back wall and front panel. Said housing/dispenser having an upper and lower "stop" flange to prevent it from extending more than 21/2" below bottom wall of holder when set up for use. The said housing/dispenser being flush with the outer bottom wall of holder during shipping and storage.

Method of producing polymeric latex

Abstract: A method of producing a polymeric latex by emulsifying and polymerizing a polymeric monomer, being characterized in that polymerization is performed by using a polymerizing tank, the polymerizing tank being in turn characterized in that: a stirring shaft (1) adapted to be rotated from the outside of the polymerizing tank is disposed in the central portion of the tank; that a bottom paddle (2) is mounted on the shaft (1), the bottom paddle having a sweep-back angle α of 30 to 60° at the leading end thereof arranged at a tank bottom portion with the lower end portion thereof close to the bottom wall surface of a stirring tank, that a flat paddle (3) is mounted on the stirring shaft (1) at a portion above the bottom paddle (2), the flat paddle having a crossed axes angle β of 40 to 100° relative to the bottom paddle (2) and having a plate-like fin (4) extending downwardly at the leading end thereof, and that a plurality of baffle plates (5) each extending in the axial direction along the sidewall surface of the stirring tank from the lower to upper portion thereof are disposed at certain intervals. This method makes it possible to remarkably reduce the amount of fine solidified substances.

Method of making foam in an energy efficient compressor

Abstract: An energy efficient hermetic compressor for compressing hydrofluorocarbon refrigerants. The compressor includes a motor compressor unit with a rotating oil pickup tube to which an oil paddle is attached. The oil paddle rotates in a base lubricant of polyol ester mixed with a siloxane ester foaming agent. The combination of the foaming additive with the oil paddle creates a foam layer that floats in the oil sump to reduce the sound level of the compressor.

Method and device for determining rhenological properties

Abstract: A method and device for the measurement of rheological properties of high density slurry materials and in particular high density mill tailings. A sample of the tailings is placed within a mixing tub, with either a concentric paddle or a planetarily movable paddle used to effect the mixing. A digitally controlled electric motor is used to directly drive the paddle at a constant or predetermined speed or speeds. The tub is laterally pivotable against a load cell for a direct determination of reaction torque with correlation to viscosity and other rheological properties of the mill tailing.

Methods of constructing paddle and shaft assemblies for twin screw mixer and/or processors and the resulting apparatus

Abstract: A method of constructing or reconstituting a shaft and paddle assembly for mixers and processors wherein radially aligned paddles on parallel shafts revolving at the same speed in the same direction of rotation both co-wipe and completely wipe the interior of the barrel of the mixer or processor which has a mixer chamber comprising interconnecting cylindrical bores. The co-wiping paddles are formed with paddle bores of a configuration comprising alternating lobular projections and root recesses, and arcuate corner portions on the lobular projections and root recesses. The arcuate corner portions of the projections are tangential to the arcuate corner portions of the root recesses. The shafts are formed with intermeshing matching projections and root recesses.

Paddle game apparatus

Abstract: A paddle ball game and method of ball control associated therewith which includes two paddles held parallel to each other and a resilient ball supported between them. Each player observes the ball's location through the transparent material used to form the paddle's ball engagement area and moves the paddle to roll the ball into the aperture in the other player's paddle. The paddles also feature a handle mounted offset from the surface of the paddle and a flexible net which covers the aperture to catch the ball after it passes through. Alternatively, an inelastic cord is also used to tether the ball to the paddle. In another embodiment, means are provided to illuminate the engagement area for play in the dark.

Method for thermally coupling a heat sink to a lead frame

Abstract: A molded plastic package (40) for an integrated-circuit die (26) includes a lead frame having a central die-attach paddle (12). One side of the die-attach paddle has an integrated-circuit die fixed thereto. A heat sink member (20) is resiliently fixed to the other side of the die-attach paddle using a layer of viscous thermal grease (24) between the heat sink member and the other side of the die-attach paddle. One or more holes which are formed in the lead frame are engaged by corresponding studs (24C, 24D) on the heat sink. The stud has a shoulder portion (74) which engages the lead frame to prevent the stud from further passing through the hole in the lead frame.

Game for improving eye-hand coordination

Abstract: A paddle and ball game, consisting of a paddle with an attached cup-shaped member and a ball, that develops eye-hand coordination, agility, reflexes and concentration.

Test fixture carrying a channel card for logic level translation

Abstract: A test fixture (14) for coupling a circuit board (12) to an automatic testing machine (13) includes a translator board for coupling each of a plurality of test pads (26) on the board to a separate one of a plurality connecting members (22) arranged in spaced-apart rows. Each row of connecting members is coupled via a paddle card (36) and a channel card (44) to a separate channel of the testing machine (13). In accordance with the invention, a paddle card (36') containing circuitry (52') for signal logic level translation may be substituted for one of the paddle cards (36) when it is necessary to translate the logic level of certain signals passing between the testing machine (13) and the circuit board (12).

Paddle position and size effects in human transthoracic defibrillation- a three-dimensional finite element model

Abstract: A realistic three-dimensional (3D) finite element model (FEM) of the conductive anatomy of a human thorax has been constructed to quantitatively assess the current density distribution produced in the heart and thorax during transthoracic defibrillation. The model is based on a series of cross-sectional CT scans and incorporates isotropic conductivities for 8 tissues and an approximation of the anisotropic conductivity of skeletal muscle. Current density distributions were determined for 4 paddle pairings and 2 paddle sizes. Our results show fairly uniform myocardial current density distributions for all paddle pairs and sizes examined. Maximum current density values < 4 times the minimum current density (Jlh) necessary to inactivate a myocyte suggest that common clinically used defibrillation paddle positions have a safety factor of at least 2.5.

Table racket ball game device

Abstract: This new invention is a table Racket Ball Game Device. This new invention is an enclosed table game device played with a table tennis type ball, off the sides, bottom and top, in three dimensions. This new table game device is a game of skill not chance. This is a serious game almost anyone can learn to play. It teaches eye-hand coordination and concentration. The ball is hand loaded, on to the paddle, aimed and carefully shot, at the other player's goal, with just a flick of the fingers. Players score points when the ball falls out of play behind the defender's defense and down the ball return ramp. The paddles are designed and mounted in such a way that the entire surface maybe used in defense. This is a game of skill not chance because the players can defend every shot if they can slide the paddle quick enough to block the oncoming shot.

Agitation tank for high-viscosity liquid

Abstract: PURPOSE:To uniformly mix and agitate liquid which has high viscosity and is strong in adhesive properties and also to prevent the liquid from being stuck on the internal wall of a vessel as little as possible. CONSTITUTION:A rotary shaft 4 is vertically hung on the centerline from the top part of a vertical cylindrical vessel 2 and also connected to an adjustable speed motor 3. Both an anchor vane 5 and the oblique paddle vanes 6 are fixed to the rotary shaft 4. The anchor vane 5 is provided along the inner circumferential surface of the lower part of the vessel 2. The oblique paddle vanes 6 are provided along the inner circumferential surface of the intermediate part of the vessel 2. A baffleplate 8 having a vertical face is projected on the internal wall in the intermediate part of the vessel.

Control apparatus for dispensing fluids.

Abstract: In control apparatus for beverage dispense, wherein the apparatus is arranged to ensure proper ratio control between beverage and coolant or syrup and carbonated water, paddle elements 5, 7 are arranged in respective enclosures 1, 3, the paddle elements 5, 7 being coupled in order to ensure co-ordinated rotation such that paddle sweep results in correct proportion dispense between enclosures 1, 3.