Showing papers on "Paddle published in 2010"

Hydrodynamic determination of the moving direction of an artificial fin by a harbour seal (Phoca vitulina).

Abstract: Harbour seals can use their vibrissal system to detect and follow hydrodynamic trails left by moving objects. In this study we determined the maximum time after which a harbour seal could indicate the moving direction of an artificial fish tail and analysed the hydrodynamic parameters allowing the discrimination. Hydrodynamic trails were generated using a fin-like paddle moving from left to right or from right to left in the calm water of an experimental box. The blindfolded seal was able to recognise the direction of the paddle movement when the hydrodynamic trail was up to 35 s old. Particle Image Velocimetry (PIV) revealed that the seal might have perceived and used two different hydrodynamic parameters to determine the moving direction of the fin-like paddle. The structure and spatial arrangement of the vortices in the hydrodynamic trail and high water velocities between two counter-rotating vortices are characteristic of the movement direction and are within the sensory range of the seal.

Lower limb contribution in kayak performance: modelling, simulation and analysis

Abstract: Lower limb contribution in flatwater kayaking is difficult to quantify experimentally because lower-limbs and pelvis are hidden in the kayak. A computer simulation model was developed to assess the lower limb contribution to kayak performance. Three simulated movements were compared in terms of paddle tip velocity, force impulse, and mechanical work. The pelvis motion increased the paddle tip velocity by 0.15 m s−1 at the stroke beginning and 0.34 m s−1 afterward. The propulsive impulse was also modified by pelvis rotation with a 3.5 N s increase per stroke. For a set performance, the co-ordination involving the lower limbs decreased the mechanical work by 20 J. The above results were obtained by modelling the Ergometer-Athlete-Paddle {EAP} system using 18 bodies and 31 degrees of freedom. The motion capture data were transformed in generalized coordinate time histories by solving an inverse kinematics problem with optimization in order to assess both lower limb and upper limb positions and produce a cyclic motion. Then the {EAP} was simulated based on Lagrangian dynamics with Lagrange multipliers to introduce the paddle forces. Finally, the joint torques were calculated by solving an inverse dynamics problem with optimization in order to ensure a good distribution of lower limbs actuating torques.

Exercise machine for training watersports athletes

Abstract: An exercise machine adapted for training watersports athletes has a pair of spaced-apart vertical columns each with hollow tubular body with a weighted plunger attached to a cable for vertical reciprocation while a user performs power and return stroke movements on an instrument attached to the other end of the cable. The plunger is hydraulically coupled to an air channel fed by an air-through valve sized to control air movement into the air channel by the rising plunger during a power stroke to approximate water resistance to an oar, paddle or arm in the water. The air channel has a release opening for releasing air balanced against the weight of the falling plunger to approximate lifting an oar, paddle, or arm out of the water on a return stroke. The exercise machine can be used to practice a wide range of watersports training exercises for swimming, paddleboarding, canoe paddling, rowing, etc.

Medical lead and method

Abstract: A medical lead for electrical stimulation or sensing. The medical lead has a generally flat paddle on the distal end of the lead body. An electrode array is provided on the paddle. The electrode array having directional electrical field properties relative to the first and major surfaces of the paddle (e.g., the electrodes are exposed through only one of the major surfaces). An orientation marker for determining orientation of the lead, with the orientation marking including fluoroscopically viewable material.

Integrated circuit packaging system with pad connection and method of manufacture thereof

Abstract: A method of manufacture of an integrated circuit packaging system includes: providing a package paddle; forming a pad extension having a spacing to the package paddle; forming a lead adjacent the pad extension, the pad extension between the package paddle and the lead; forming a conductive layer directly on and between the package paddle and the pad extension; and connecting an integrated circuit to the pad extension and the lead, the integrated circuit over the package paddle.

Steerable percutaneous paddle stimulation lead

Abstract: The present disclosure relates to a percutaneous paddle stimulation lead that can be steered during implantation. The percutaneous paddle stimulation lead that can be steered in a thickness plane of percutaneous paddle stimulation lead during implantation.

Device And Method For Determining Forces of a Knee Joint

Abstract: An orthopaedic surgical device for determining the joint force of a patient's knee joint (12) includes a tibial paddle (34) shaped to be positioned in the patient's knee joint and a handle extending from the tibial paddle. The tibial paddle includes a sensor array (90) positioned therein and configured to generate sensor signals indicative of the joint force of the patient's knee joint. The orthopaedic surgical device also includes a control circuit (92) configured to control a display located on the handle to provide a visual indication of the medial and lateral balance of the joint force.

System and method for implanting a paddle lead

Abstract: A method includes (i) inserting a paddle portion of a lead into a longitudinal slit of a tool having a lumen in communication with the slit; (ii) axially rotating the tool relative to the paddle portion of the lead to cause the paddle portion of the lead to enter the lumen; (iii) axially aligning the lumen of the tool with a lumen of an introducer; and (iv) advancing the paddle portion of the lead through the lumen of the tool and into the lumen of the introducer.

Driver select paddle shift device and modes of operation

Abstract: A shift mode system and method of operating includes a switch assembly that selectively and alternately connects a shift selector to one of the steering column and the steering wheel. In an exemplary embodiment, the switch assembly has a first locking member to connect the shift selector to the steering column, and a second locking member for connecting the shift selector to the steering wheel. A lever has first and second operative positions to selectively engage the first and second locking members or pins from the shifter into operative engagement with one of first and second cable reels, respectively.

Axel rover paddle wheel design, efficiency, and sinkage on deformable terrain

Abstract: This paper presents the Axel robotic rover which has been designed to provide robust and flexible access to extreme extra-planetary terrains. Axel is a lightweight 2-wheeled vehicle that can access steep slopes and negotiate relatively large obstacles due to its actively managed tether and novel wheel design. This paper reviews the Axel system and focuses on its novel paddle wheel characteristics. We show that the paddle design has superior rock climbing ability. We also adapt basic terramechanics principles to estimate the sinkage of paddle wheels on loose sand. Experimental comparisons between the transport efficiency of mountain bike wheels and paddle wheels are summarized. Finally, we present an unfolding wheel prototype which allows Axel to be compacted for efficient transport.

Integrated circuit packaging system with protective coating and method of manufacture thereof

Abstract: A method of manufacture of an integrated circuit packaging system includes: forming a lead-frame having a die attach paddle and a contact pad connected by a link; mounting an integrated circuit die over the die attach paddle; molding a package body on the lead-frame and the integrated circuit die including leaving portions of the die attach paddle, the contact pad, and the link exposed from the package body; forming an exposed edge by etching away the link between the contact pad, and the die attach paddle; and depositing a solder-resistant layer on the exposed edge.

Stamped arm control

Abstract: A control arm includes a first clamshell half and a second clamshell half, a ball joint housing, and a paddle portion. The paddle portion is formed as a single piece with the ball joint housing, has a first side and a second side, and is disposed between the first clamshell half and the second clamshell half. A first weld connection may join the first clamshell half to the first side of the paddle portion, and a second weld connection may join the second clamshell half to the second side of the paddle portion. Attachment of the first clamshell half to the first side of the paddle portion and attachment of the second clamshell half to the second side of the paddle portion may be characterized by the absence of a rivet and a bolt.

Low wind, vertical axis, dual stage, wind turbine power generator

Abstract: The present disclosure describes a low-wind, dual-stage, vertical-axis, wind-generated power turbine comprising a structural support tower, at least four turbine assemblies stacked on top of one another within individual turbine bays, a central drive shaft connecting the turbine assemblies, a draft induction channel surrounding the drive shaft, a spiral blade running through the induction channel, a paddle turbine assembly at the base of the tower which propels the spiral blade, a blower source which powers the paddle turbine, a built-in solar system which feeds the blower, external, natural wind directional slats, and a high pressure, fluid-drive, Hydrabine turbine mechanically coupled to a transmission or CTV, coupled to a one Mega Watt output generator.

Output stabilized wave energy conversion device and method

Abstract: An Oscillating Wave Surge Converter designed to capture the horizontal (surge) water motion in near-shore waves. The OWSC includes a paddle, one edge of which is hinge-attached to a stationary horizontal platform oriented to expose the paddle surface to the wave action. Variations in the amount of wave energy an OWSC is able to capture and convert into a more useful form are undesirable. These variations have several sources, including tide-driven depth variations of the water in which the OWSC is deployed, and variations in local wave conditions. The OWSC reduces these energy-conversion variations by varying the surface area of the OWSC paddle. The paddle surface area is varied by changing the extent to which multiple layers comprising the paddle overlap. Controlled variation of the paddle area reduces undesirable variations in the energy captured and converted.

Telescopping Paddle for Skateboards

Abstract: A telescoping paddle for use with skateboards. The telescoping paddle has a telescoping shaft, a piston leg, a piston spring attached to the telescoping shaft and the piston leg, and a rubber push tip that attaches to the piston leg. Attached to the top side of the top shaft is a handle. A grip attaches to an upper portion of the telescoping shaft. The telescoping paddle also has a telescoping adjuster locking device used for locking the telescoping shaft at a specific length. The telescoping paddle enables better traction, while also providing an additional means to propel a rider forward.

Integrated circuit packaging system with paddle molding and method of manufacture thereof

Abstract: A method of manufacture of an integrated circuit packaging system includes: providing a package paddle having a hole, a recess, and a pad, the hole over the recess; mounting an integrated circuit to the package paddle; forming a lead having a bottom surface coplanar with a bottom surface of the pad, the lead isolated from the package paddle; attaching connectors directly on the integrated circuit, the lead, and the package paddle; and forming an encapsulation covering the integrated circuit and within the hole and the recess.

Intelligent air compensation device

Abstract: An intelligent air compensation device comprises a volute case, a bottom cover, a shutter, an electric mechanism and an intelligent controller. An electric appliance box is arranged on the external part of the volute case and the electric mechanism and the intelligent controller are mounted in the electric appliance box. The electric mechanism is composed of a step motor, a transmission gear, a paddle and a guide rail, wherein the paddle is of strip shape and a plurality of axial sleeves are alternatively arranged on the back of the paddle and each axial sleeve is respectively permanently connected with an eccentric axle at the bottom of a blade and the front surface of the paddle is provided with racks and two ends of the paddle is provided with rollers and the rollers are embedded into the guide rail and the guide rail is supported by a support plate fixed on a base seat and the base seat is permanently connected with the bottom of the volute case and the transmission gear is fixed on the main axle of the step motor and the step motor is fixed on the support plate and the transmission gear teeth with the rack on the paddle; the step motor and an alternating current motor are connected with the intelligent controller. The intelligent air compensation device correspondingly changes the air delivery amount according to the indoor environment temperature change and adjusts the air delivery direction with high intelligent degree and wide application range.

Steering wheel with at least one shift paddle

Abstract: A steering wheel has at least one shift paddle which is coupled to the steering wheel in such a manner that the shift paddle is movable relative to the steering wheel in order in a contactless manner to trigger a shifting operation. In order to improve the ease of operation when actuating the shift paddle on the steering wheel, the steering wheel is distinguished by a slotted guide mechanism by which a shifting sensation is generated during movement of the shift paddle.

Atomic force microscope including accelerometer

Abstract: A microcantilever used in Atomic Force Microscopy (AFM) includes an elongated cantilevered body with a probe tip placed preferably near its free end and preferably along the cantilever's axis. Some embodiments of the present invention integrate into the microcantilever body an embedded or etched paddle that rotates rigidly about an axis parallel to that of the cantilever with hinges that connect the paddle to the cantilever body. In one embodiment the resonance frequency of this paddle resonator is higher than the fundamental resonance of the microcantilever so that the paddle rotation is proportional to the vertical microcantilever acceleration at the hinge location. The motion of the paddle can be detected using radiation irradiating the paddle; the reflected beam is centered onto a four quadrant photodiode as commonly found in AFM. The paddle's vertical motion is detected in the usual way by monitoring the vertical channel in the photodiode while its rotation is monitored from the lateral channel in the photodiode. By monitoring the vertical tip acceleration signal from the paddle rotation, it is possible to resolve the history of tip-sample force during oscillation cycles. A calibration method to convert the measured paddle rotation into vertical probe tip acceleration and instantaneous tip-sample force is also disclosed.

Modeling and identification of a class of MR fluid foamdampers

Abstract: This paper presents the results of a series of experiments conducted to model a magnetorheological damper operated in shear mode. The prototype MR damper consists of two parallel steel plates; a paddle covered with an MR fluid coated foam is placed between the plates. The force is generated when the paddle is in motion and the MR fluid is reached by the magnetic field of the coil in one end of the device. Two approaches were considered in this experiment: a parametric approach based on the Bingham, Bouc-Wen and Hyperbolic Tangent models and a non parametric approach based on a Neural Network model. The accuracy to reproduce the MR damper behavior is compared as well as some aspects related to performance are discussed.

Mixing and stirring device with heating function

Abstract: The invention discloses a mixing and stirring device with heating function. The mixing and stirring device comprises a rotary shaft and a stirring paddle, wherein the stirring paddle is connected with the rotary shaft through spokes; the rotary shaft, the spokes and the stirring paddle all have a hollow structure, and the hollow parts of the three are communicated; the upper end of the rotary shaft is an open end, and the lower end of the rotary shaft is a closed end; the stirring paddle is formed by serially connecting a plurality of blade units; the plurality of blade units are positioned between an upper round hollow pipe and a lower round hollow pipe; the upper and lower ends of the plurality of blade units are connected in series through the two round hollow pipes; the rotary shaft is positioned on the inner sides of the two round hollow pipes; the spokes are arranged between the two round hollow pipes and the rotary shaft; and an inner-circle hollow blade is arranged between each pair of upper and lower corresponding spokes. A stationary steam coil structure in a mixing container of the prior art is changed into a rotatable steam hollow blade of a central stirring shaft, so the temperature drop of the melt caused by a normal-temperature powder material can be quickly compensated, and composite slurry can be uniformly mixed.

Horizontal continuous paddle mixer

Abstract: A horizontal continuous paddle mixer, wherein a generator drives as power the main shaft through reducer, the main shaft leads the paddle to rotate at a certain speed, cylinder and cover are connectedwith each other in a fixed way, a main shaft, a set of paddles and a set of block handle are connected with each other in a fixed way, tilt angles of the paddles on every neighboring paddle handle with the main shaft line are different and adjustable, when the paddle reaches to a certain round speed, the materials become flowing layer in the cylindrical shell, running speeds of materials in everycircle section are different because of the difference of the angles of the paddles, then the materials mixed with each other to reach a mixed effect, and the output of the equipment is controlled through controlling remaining time of materials in the equipment by adjusting board during discharging to reach the purpose of continuous feeding and discharging and with output adjustable.

Turbulent-flow-type self-cleaning washing machine

Abstract: The utility model relates to a self-cleaning washing machine which is capable of utilizing turbulent flow to scour an interlayer between an inner bucket and an outer bucket of an automatic washing machine. The inner bucket (1) of the washing machine is provided with a paddle rib (2) which is convex outwards; and the outer bucket (3) is provided with a water retaining rib (4) that is convex inwards. When the inner bucket (1) rotates in the water, due to the interaction between the paddle rib (2) and the water retaining rib (4), vortex and a stream of turbulent flow formed by various irregular movements can be generated in the interlayer between the inner bucket and the outer bucket. Under the dramatic impact and scouring of the turbulent flow, scouring agent, organic sewage and other impurities can not attach on the bucket wall, and fouling and bacteria can not be generated. Therefore, the aim of maintaining the washing machine to be clean can be achieved.

Ocean Current-Based Hydroelectric Power Generation System

Abstract: An ocean current-based hydroelectric power generation system is disclosed wherein the rotational assembly of the system floats at the surface of the water and comprises a paddle wheel style impeller with a plurality of paddles surrounding an axle wherein the paddles positioned above the surface of the water are propelled forward by the force of water current and wind. Each paddle is assembled with a pivotally attached blade to a pair of supporting members extending a distance from the surface of the axle, such that the blade pivots open while the paddle rotates underwater, allowing current to flow through it enabling continued rotation of the rotational assembly. The system further comprises of floatational devices positioned a distance from the rotational assembly as to prevent the tangling and crushing of seafaring creatures.

Paddle wheel for paddle wheel ship

Abstract: The invention discloses a paddle wheel for a paddle wheel ship, which comprises a wheel shaft, a wheel hub arranged around the wheel shaft, and paddles which are uniformly arranged on the outer edge of the wheel hub, wherein the water-repelling surface of the paddle is formed by at least two flat surfaces or camber surfaces which are connected with each other or by a flat surface and a camber surface which are connected with each other; and the water-repelling surface of the paddle deflects to the rotating direction of the paddle wheel from the outer edge to the inter edge, with the defection angle Alpha larger than 10 degrees and less than 120 degrees The invention has the advantages that the energy waste during the high-speed rotation of the paddle wheel is avoided, the water-repelling surface of the paddle deflects to the rotating direction of the paddle wheel from the outer edge to the inter edge by 10 degrees to 120 degrees, so when the paddle repels water, the movement direction of water body flying off upward can be changed, and an extra upward counter acting force can be obtained, so the useful work is increased, and the idle work can be reduced, thus realizing the improvement of propulsive efficiency of the paddle wheel when in high-speed rotation

Comparison of blade designs in paddle sports

Abstract: The design of paddles used in canoe racing has been the subject of considerable research, with specialised designs for flat water racing (canoe sprint), surf and white water canoeing. The paddles used in Asian boat racing remain much closer to traditional designs. To examine the effect of this development, the pressure distribution and coefficient of drag for canoe paddle blades are compared to the paddle designs used in Asian boat races. The pressure distribution on the face of the paddle was examined using computational fluid dynamics (CFD), and drag forces and the coefficient of drag were examined experimentally in a water tunnel. The results show that although the CFD predicts considerable variation in performance, experimental testing showed much lower variation in the performance of the paddles. The results show that the modern macon type paddle would be easiest to control, and the leaf shaped paddle used in snakeboat racing would have the highest coefficient of drag.

Free floating paddle handle for vehicle doors

Abstract: A handle assembly is provided for a vehicle passenger door or compartment door and has a free floating paddle when the door or compartment is locked. The paddle is pivotally mounted on the exterior of the handle housing, while a logic assembly is mounted on the interior of the housing. The logic assembly includes a pivotal drive plate, a pivotal driven plate, and a pivotal lock arm. The drive plate is independent of the driven plate when the door is locked. The drive plate and driven plate moving in unison when the door is unlocked and the paddle is opened, thereby opening the latch mechanism for the vehicle compartment.

Improved marine corrosion simulation test system

Abstract: The utility model relates to an improved marine corrosion simulation test system, which belongs to the field of marine steel corrosion test technique equipment. The test system comprises two parts, i.e. a water storage tank and a corrosion test tank which are connected together through a water circulation system, the test system is characterized in that the water circulation system utilizes a submerged pump to supply water pressure, valves regulate water flow, a water inlet tube always feeds water, and the water discharge time of a water outlet tube is controlled by an energy-saving timer. A tested plate rack and a wave paddle are arranged in the corrosion test tank, and the surrounding inner wall of the corrosion test tank is provided with a wave absorber; a support is arranged over the water storage tank, a motor and a reducer are placed on the support, the motor is connected with the reducer to output torque, and an eccentric wheel is arranged on the output shaft of the reducer, and is connected with the wave paddle through a connecting rod. The test system, the structure of which is simple, can uniformly produce waves, circulate water and effectively simulate the marine corrosion environment for a long time.

Combined stirring paddle

Abstract: The utility model relates to a stirring device and provides a combined stirring paddle which comprises a stirring shaft, a helical ribbon type stirring paddle, a turbine/aerofoil stirring paddle and a bottom paddle. The helical ribbon type stirring paddle is fixed on the stirring shaft by a support bar and spirals around the stirring shaft from top to bottom so as to form a frame, the turbine/aerofoil stirring paddle is arranged in the frame formed by the helical ribbon type stirring paddle and is fixed on the stirring shaft between the upper end part and the lower end part of the helical ribbon type stirring paddle, and the bottom paddle is fixed at the bottom end of the stirring shaft. The combined stirring paddle adopts the combination of three kinds of blades, provides cutting and cycling functions for multiphase high-viscosity materials, ensures uniform temperature in a reactor, ensures the materials to be mixed rapidly, uses energy effectively, solves the problem of sticking to the wall of the materials nearby the wall, avoids solid deposition, ensures uniform distribution of the solid and promotes mass transfer between liquid and solid phases. The combined stirring paddle can be widely used in high-solid content sticky liquid and a multiphase reaction system which contains pumping-in and reacting to produce suitable amount of gas.