Showing papers on "Paddle published in 2006"

Electrostatic Discharge Ground Test of a Polar Orbit Satellite Solar Panel

Abstract: The Advanced Land Observing Satellite that was launched by the Japan Aerospace Exploration Agency in 2006 carries a large solar-array paddle of 22 times 3 m in polar orbit. The wake side of the solar paddle can be charged to a negative value exceeding -1000 V. Numerical simulations and laboratory experiments are carried out to investigate charging and arcing phenomena on the backside of the solar paddle that has exposed bypass diode boards and silver-Teflon thermal film. Possibility of secondary arc and surge voltage between hot and return ends of power circuit has been investigated. The authors irradiate solar-panel coupons with an electron beam to simulate charging situation near the North Pole. Surface flashover is observed once the insulator potential exceeds -7000 V. The authors have also tested charging situation near the South Pole where carbon fiber-reinforced plastics surface facing dense ionospheric plasma may arc easily once a satellite potential drops to -80 or -90 V. The solar-paddle design has been modified to increase the safety margin against arcing, and tests have been carried out to identify the strength limit under extremely harsh test environment

Adaptation of Haptic Interfaces for a LabVIEW-based System Dynamics Course

Abstract: This paper describes the development of haptic paddle laboratory kits and associated National Instruments LabVIEW virtual instrumentation to support the adaptation of laboratory experiments for a required undergraduate system dynamics course at Rice University. The laboratory experiments use simple haptic interfaces, devices that allow the students to interact via the sense of touch with virtual environments. A clear benefit of this laboratory series is that students study the haptic paddle as a real electromechanical system in addition to using the haptic paddle as a tool to interact with virtual mechanical systems. The haptic paddle hardware has been modified to improve robustness, and the LabVIEW graphical programming language is used for data acquisition and control throughout the laboratory series.

Integrated circuit package system with interlock

Abstract: An integrated circuit package system is provided including forming a first external interconnect and a die paddle having a slot, forming an inner terminal from a peripheral region of the die paddle, connecting an integrated circuit die and the peripheral region for ground connection, and molding through the slot.

Performance tolerance and boat set‐up in elite sprint Kayaking

Abstract: The aim of this study was to examine the inter-relationship between athlete morphology, equipment set-up and performance in elite sprint kayaking. Correlations applied to data from the 2000 Olympics were used to select the most important links between morphology and boat set-up--paddle grip width and foot-bar distance. Associations between body size and the above selected equipment set-ups were calculated using a Pearson correlation matrix, to facilitate the logical selection of independent variables as input for regression analyses. Significant (p < 0.01) regression equations were developed for the prediction of foot-bar distance (r2 = 0.589: standard error of estimate (SEE) = 4.48) and paddle grip width (r2 = 0.541: SEE = 3.08). Three national-standard sprint kayakers used their preferred set-up together with modifications of their predicted set-up, derived from Olympic data, to test performance tolerance in sprint kayaking. Mean coefficients of multiple determination over three trials for the three paddlers of 0.91, 0.91 and 0.92 for left paddle force, right paddle force, and paddle angle at water entry, respectively, were recorded when using their preferred set-up. These data showed that the paddlers produce consistent patterns of motion. The intervention of altering the boat set-up resulted in varying changes to boat speed. The mean preferred speed for the three paddlers of 4.47 m/s was reduced by 0.07 and 0.10 m/s when the above boat set-up was modified to a predicted and 'predicted plus one standard deviation'respectively. These changes in boat speed were the result of alterations in the mechanics of paddling technique.

Sheet discharging device and sheet postprocess apparatus using the same

Abstract: A sheet discharging device has a conveying weight for pressing a conveyed sheet to a caterpillar belt. The pressing force of the weight is increased both when the sheet is discharged from the caterpillar belt to a placement tray, and when the sheet is switched back and conveyed to the bottom of the caterpillar belt. The pressing force of the weight is increased concurrently with the driving of a paddle provided at an outlet of the placement tray. The pressing force is increased by a rubber piece provided on a paddle driving shaft that rotates out of phase with the paddle, so as to engage and press the conveying weight at a predetermined time. The device is capable of reliably conveying a wide variety of sheets onto a tray and transferring the conveyed sheets to a predetermined tray position.

Control system for indexing compiler drive shaft that senses drive torque to initiate indexing

Abstract: A finishing-compiling station or structure is disclosed where marked copies of paper or other media are transported into a compiling tray for paper registration by paddle wheels or other such deflection loaded compiler drive elements. These sheets of paper after registration are then processed and finished as desired. The pressure applied by the paddle wheels is substantially constant where as prior art pressures varied depending upon the height of the paper stack. A sensor and appropriate software controller gauges the speed of the paddle wheel drive shaft and controls the height of the drive shaft from the stack and thereby equalizes the resulting pressure to a continuous fixed pressure throughout this stacking operation.

Side leaded, bottom exposed pad and bottom exposed lead fusion quad flat semiconductor package

Abstract: A semiconductor package which includes a generally planar die paddle defining multiple peripheral edge segments and a plurality of leads which are segregated into at least two concentric rows. Connected to the top surface of the die paddle is at least one semiconductor die which is electrically connected to at least some of the leads of each row. At least portions of the die paddle, the leads, and the semiconductor die are encapsulated by a package body, the bottom surfaces of the die paddle and the leads of at least one row thereof being exposed in a common exterior surface of the package body.

Evaluation of disintegrating time of rapidly disintegrating tablets by a paddle method.

Abstract: A paddle method for measurement of the disintegrating time of orally disintegrating tablets with rizatriptan benzoate as a model drug was evaluated. The paddle method employed a dissolution test assembly with tablets immersed in disintegrating medium through a fastened sinker. Paddle stirring rate, opening of the sinker sieve, and tablet crushing strength influenced disintegrating time greatly. A logarithmic relationship was observed between disintegrating time and paddle revolution speed, while disintegrating time values and tablet crushing strength were fitted to a linear equation. The paddle method values with limited deviation were in good correlation with in vivo results. The paddle method was employed to optimize the disintegrating time of rizatriptan benzoate orally disintegrating tablets using a factorial design. The best-fit quadratic equation with a regression coefficient of 0.996 was highly predictive, which was indicative that the paddle method was precise and applicable in formulation optimization.

Velocity depth profile of granular matter in a horizontal rotating drum

Abstract: Using MRI velocimetry, we verify that the velocity depth profile of the flowing layer near the axial center of a half-filled 3D drum has the form V m[1 − (r/r 0)2]-Ω r, where r is the depth measured from the cylinder center, except very close to the free surface where it lies below the quadratic form. We confirm that this deviation is due in part to particles reaching the surface with large components of their velocity in the azimuthal direction. We used a 3D cylinder with a radial “paddle” placed at approximately the dynamic angle of repose, covering the top third of the flow, so as to null any azimuthal velocity. It was found that the deviation from the quadratic form was reduced by the presence of the paddle when the comparison is made at the same solid body rotation rate, at the same free surface velocity, and with the paddle placed at different positions, so long as it makes good contact with the surface. Thus, we conclude that a quadratic velocity depth profile may be a fundamental property of granular shear flows in this geometry, when the sole effect of the cylinder rotation is to transport the particles from the end of the flow to the beginning without imparting velocity perpendicular to the flow.

Wave Energy Capturing Device

Abstract: A wave energy capturing device ( 10 ) comprising a base ( 12 ) adapted for fixed connection to a submerged surface ( 14 ). At least one elongate buoyant paddle ( 26 ) is pivotally mounted to the base ( 12 ) about a first pivotal axis ( 22 ), for angular oscillation through an angle range when wave motion applies a force to the paddle ( 26 ). The paddle ( 26 ) has a longitudinal axis ( 27 ), an upper end portion and a lower end portion. An energy transfer member is attached to the paddle ( 26 ) and is adapted to be driven by the angular oscillation of the paddle ( 26 ). A paddle adjustment assembly is associated with the paddle ( 26 ) and is adapted to adjust the angle range of the paddle ( 26 ) in magnitude and/or angular position relative to the first pivotal axis ( 22 ).

Electrode arrangements for tissue stimulation and methods of use and manufacture

Abstract: A lead has a paddle body with a non-conductive material and multiple electrodes disposed within the non-conductive material. At least one of the electrodes includes one or more anchoring arrangement, such as opening(s) through the electrode through which the non-conductive material can pass; anchors that extend away from the electrode and into the non-conductive material of the paddle body; or flow-through anchors attached to the electrode with an opening through which the non-conductive material may pass.

Gas lift flow surveillance device

Abstract: The gas lift flow surveillance device has a paddle having a rod with a target attached to one end and a paddle block attached to the opposite end. The paddle block is pivotally disposed within a surveillance device housing body. A contact extending from the paddle block exerts pressure against a strain input area of a load cell. The load cell has a machine-readable millivolt output that changes according to a strain input from the paddle. A bottom section of the housing body has a bore defined therein that receives a threaded hex nipple, the rod passing through the nipple. The threaded hex nipple is adapted for attachment to a flow pipe National Pipe Thread (NPT) aperture for attaching the surveillance device to a flow pipe with the target in the fluid flow path.

Swimmer's paddle

Abstract: According to the present invention there is provided a swimmer's paddle for attachment to the hand of a swimmer. The paddle includes a body member having an upper surface and a lower surface, a front edge adjacent the fingertips of a swimmer, a rear edge adjacent the palm, an inner edge adjacent the thumb and an outer edge adjacent the little finger. When the fingers rest on the upper surface of the body member they are substantially aligned in a first plane. The paddle also includes a device connected to the body member for positioning the thumb on the body member in a second plane below the fingers, and a device connected to the body member for holding the body member from movement away from the thumb during a swimmer's stroke.

Insert for multiple mouse trap

Abstract: A mouse or rodent trap including a housing having an elongated rotatable paddle member therein and an insert within the confines of the trap housing. A trigger assembly engages the paddle member and releases the paddle member for rotation when the trigger assembly is engaged by the mouse or rodent entering the housing. The mouse or rodent is then swept into the insert which is then closed and removed.

Rotary hydraulic damper for check valve

Abstract: A damping system for a valve with a flapper comprises a main body having at least an inner wall defining a chamber having fluid therein, a paddle disposed within the chamber, and a fluid channel. The paddle is coupled to the flapper and moved thereby between a first and second position when the flapper is in a closed and an open position, respectively, and is configured to force fluid from at least a section of the chamber when approaching the first or second position. The fluid channel is coupled to the chamber section, and is configured to allow fluid egress out of the chamber section at a first egress rate when the paddle moves from the first position to a predetermined intermediate position between the first and second positions, and at a second, lower egress rate when the paddle moves from the predetermined intermediate position to the second position.

Water craft paddle device for one-arm use

Abstract: A water craft or canoe paddle device is provided for one-arm use. The paddle device enables a user to produce power strokes similar to strokes that are achieved with a traditional canoe paddle used by an individual using two unimpaired arms and two unimpaired hands. In one embodiment, one end of the paddle device for one-arm use is fastened to the upper torso, or shoulder area of the user. In a second embodiment, one end of the paddle device for one-arm use is fastened to the biceps area of the user. The design of the paddle shaft enables a user with one unimpaired arm to grasp the shaft of the paddle with their one unimpaired hand in substantially a perpendicular configuration to the shaft of the paddle. The power is achieved because the canoe paddle device for one-arm use design enables the large muscle groups of the shoulder, torso, back, and abdominal muscles to be utilized during each stroke of the paddle.

A wave energy capturing device

Abstract: A wave energy capturing device (10) comprising a base (12) adapted for fixed connection to a submerged surface (14). At least one elongate buoyant paddle (26) is pivotally mounted to the base (12) about a first pivotal axis (22), for angular oscillation through an angle range when wave motion applies a force to the paddle (26). The paddle (26) has a longitudinal axis (27), an upper end portion and a lower end portion. An energy transfer member is attached to the paddle (26) and is adapted to be driven by the angular oscillation of the paddle (26). A paddle adjustment assembly is associated with the paddle (26) and is adapted to adjust the angle range of the paddle (26) in magnitude and/or angular position relative to the first pivotal axis (22).

Apparatus for use in balancing ligaments in a joint

Abstract: Apparatus (10) for use in performing an orthopaedic surgical procedure on a patient includes at least one femoral paddle (14) and a tibial paddle (12). At least one of the femoral paddle and the tibial paddle is movable away from the other. Apparatus also includes a sensor (30) configured to generate a signal indicative of a force applied to the femoral paddle or the tibial paddle. The apparatus may be communicatively coupled to a computer assisted orthopaedic surgery system.

Mixer having S-shaped paddles for mixing viscous materials

Abstract: A mixer is provided that is configured for attachment to a power tool for mixing a viscous material, and includes a shaft defining a shaft axis, and a plurality of paddles attached to the shaft and extending radially from the shaft. All of the paddles have generally the same axial distance to the first end of the shaft, and the paddles are configured for rotation about the shaft axis in a direction of rotation. Each of the paddles has a general “S”-shape defined between a top end and a bottom end of the paddle, and between a leading surface and a trailing surface of the paddle.

Overhang integrated circuit package system

Abstract: An integrated circuit package system is provided attaching a film to a die paddle, applying an adhesive to the film, and attaching an integrated circuit die over the adhesive and the film to the die paddle.

Method of fabricating an integrated circuit with etched ring and die paddle

Abstract: An integrated circuit package system is provided including forming a D-ring comprising half etching a paddle, etching a ring, and etching a tie bar. The tie bar is between the paddle and the ring. The system further includes mounting an integrated circuit die on a central portion of the D-ring, connecting the integrated circuit die and the D-ring, and encapsulating the integrated circuit die and a portion of the D-ring.

Rotary pneumatic damper for check valve

Abstract: A damping system for a valve with a flapper comprises a main body having at least an inner wall defining a pneumatic chamber, a paddle disposed within the pneumatic chamber, and a plurality of orifices extending through the main body. The paddle is coupled to the flapper and moved thereby between a first position and a second position when the flapper is in a closed and an open position, respectively, and is configured to force gas out of the pneumatic chamber when moving to the first position or the second position. The plurality of orifices allow gas egress out of the pneumatic chamber at least at a first egress rate when the paddle moves from the first position to an intermediate position between the first and second positions, and at least at a second, lower egress rate when the paddle moves from the intermediate position to the second position.

Table tennis racket

Abstract: The present invention relates to a table tennis racket comprising a core of synthetic material and a covering fitted onto said core by overmolding or by co-molding. According to the invention, the core is in the form of a single piece presenting a tubular handle and a paddle of thickness that is smaller than the smallest outside diametral dimension of the tubular handle, and it is provided with a plurality of recesses, between them defining a plurality of partitions extending perpendicularly to the plane of the paddle.

Lightweight, Compact, Field Transport Device for Kayaks and Canoes.

Abstract: A lightweight, field compactable, transport device designed to easily attach to one end of the hull of a personal paddle craft such as a kayak or a canoe, which, when pushed or pulled on the opposite end will allow the paddle craft to be securely transported over various types of terrain. The transport device is comprised of two separate, but interdependent parts or system/assemblies; the first part being a lightweight harness system and the second part being an axel/wheel assembly. The lightweight harness system of this transport device is generally composed of durable fabric, synthetic webbing, and adjustable-on-the-fly, heavy-duty buckles and hooks which comprise three main elements: an opposing Twin V-shaped harness system, a longitudinal strap and structural member connection assembly that when correctly deployed will securely and directly attach an axel/wheel assembly to either the top deck or the bottom side of the desired paddle-craft. This lightweight axel/wheel assembly is further comprised of a circular axel with quick-release securing pins, a three-part axel/wheel spacer assembly, and a durable, thick foam bumper pad surrounded with a resilient non-slip surface that will accommodate a wide range of paddle craft surfaces. This device's adjustable, lightweight harness system secures the axel/wheel assembly to the paddle-craft by suspending the axel/wheel assembly midway between the two opposing forces of tension created by tightly pulling together the twin V-shaped harness system and the structural member connection assembly, via the longitudinal strap.

Rotatable and extendable locking shaft apparatus

Abstract: An adjustable locking shaft apparatus is disclosed. A locking adjustment system, fully enclosed within the movable shaft segments enables rapid simultaneous angular and length adjustments to be made to the shaft. An eccentric cam configuration operated by simple twisting of the shaft segments provides the locking pressure for maintaining selected adjustments. The apparatus provides an infinite number of adjustment positions. A kayak paddle implementation of the invention is disclosed.

Stirrer and stirring method

Abstract: It is an object of the present invention to provide an agitator equipped with a bottom paddle that has favorable agitation performance also in a streamline flow region of low Re number and to provide an agitation method. According to the agitator and the agitation method of the present invention, an object is agitated within an agitation tank by the use of an agitator that includes a rotating shaft that is disposed outside of the tank along the axis of a vertically oriented cylindrical agitation tank to be rotatable, and a flat agitation impeller made up of a bottom paddle, which lower end edge is formed to be of a shape that conforms with a tank bottom wall such that a specified clearance is formed between the lower end edge and the tank bottom wall, the bottom paddle being provided with a communicating portions at a positions away from the lower end edge upward by a specified amount for communicating between the front side and the rear side of the bottom paddle, and being mounted to the rotating shaft so as to locate close to the tank bottom wall and extend towards a sidewall of the tank.

Level sensor arrangement

Abstract: The level sensor arrangement comprises a paddle directly driven by a stepping or stepper motor to rotate in use unless the paddle is arrested in use by a material level, the arrangement including a sensor to determine paddle rotation and the sensor providing a signal to a controller indicative of paddle rotation.

Buoyant safety paddle and method of manufacture thereof

Abstract: A buoyant safety paddle ( 11 ) for a kayak, a canoe or other small boat facilitates kayak deep-water self-rescue reentries and facilitates the movement of small boats over aqueous surfaces Such buoyant paddle displaces significant volume while minimizing weight eliminating the need for post-capsize attached flotation Each such buoyant paddle's volume is predetermined and distributed to retain paddling efficiency Each such buoyant paddle has a handle ( 19 ) which extends from one blade ( 12 ) or between two blades, and is water tight, with a continuous strong rigid skin ( 41 ) and low density core ( 42 ) This construction provides a buoyant, minimal weight, stiff, high strength paddle which is economical to manufacture

On-site-inflatable water skis with at least one cooperating on-site-inflatable paddle

Abstract: On-site-inflatable water skis with at least one cooperating on-site-inflatable paddle for use by a user in water. The combination includes water skis and at least one paddle. The water skis are on-site inflatable to facilitate transport and reduce required storage space and are worn by the user. The at least one paddle is on-site inflatable to facilitate transport and reduce required storage space and is used by the user to paddle the water and propel the user wearing the water skis through the water.