Showing papers on "Paddle published in 2007"

Air quality enhancing ceiling paddle fan

Abstract: A ceiling paddle fan fixture for improving the quality of the air in the room and various methods of enhancing room air quality, with particular application in public spaces such as hospitals, health care institutions, dormitories, schools and offices. A UV-C source and an air mover are combined in a single fixture which uses a low intensity UV-C source and a paddle ceiling fan to significantly increase the mixing of the treated with the untreated room air. Sterilization of room air is achieved by the passage of a high volume of air at a relatively slow speed through a relatively low intensity UV-C field.

Automated ultrasound scanning on a dual-modality breast imaging system: coverage and motion issues and solutions.

Abstract: Objective. We are developing an automated ultrasound imaging-mammography system wherein a digital mammography unit has been augmented with a motorized ultrasound transducer carriage above a special compression paddle. Challenges of this system are acquiring complete coverage of the breast and minimizing motion. We assessed these problems and investigated methods to increase coverage and stabilize the compressed breast. Methods. Visual tracings of the breast-to-paddle contact area and breast periphery were made for 10 patients to estimate coverage area. Various motion artifacts were evaluated in 6 patients. Nine materials were tested for coupling the paddle to the breast. Fourteen substances were tested for coupling the transducer to the paddle in lateral-to-medial and medial-to-lateral views and filling the gap between the peripheral breast and paddle. In-house image registration software was used to register adjacent ultrasound sweeps. Results. The average breast contact area was 56%. The average percentage of the peripheral air gap filled with ultrasound gel was 61%. Shallow patient breathing proved equivalent to breath holding, whereas speech and sudden breathing caused unacceptable artifacts. An adhesive spray that preserves image quality was found to be best for coupling the breast to the paddle and minimizing motion. A highly viscous ultrasound gel proved most effective for coupling the transducer to the paddle for lateral-to-medial and medial-to-lateral views and for edge fill-in. Conclusions. The challenges of automated ultrasound scanning in a multimodality breast imaging system have been addressed by developing methods to fill in peripheral gaps, minimize patient motion, and register and reconstruct multisweep ultrasound image volumes.

Evaluating thin compression paddles for mammographically compatible ultrasound.

Abstract: We are developing a combined digital mammography/3D ultrasound system to improve detection and/or characterization of breast lesions. Ultrasound scanning through a mammographic paddle could significantly reduce signal level, degrade beam focusing and create reverberations. Thus, appropriate paddle choice is essential for accurate sonographic lesion detection and assessment with this system. In this study, we characterized ultrasound image quality through paddles of varying materials (lexan, polyurethane, TPX, mylar) and thicknesses (0.25 to 2.5 mm). Analytical experiments focused on lexan and TPX, which preliminary results demonstrated were most competitive. Spatial and contrast resolution, side-lobe and range lobe levels, contrast and signal strength were compared with no-paddle images. When the beamforming of the system was corrected to account for imaging through the paddle, the TPX 2.5 mm paddle performed the best. Test objects imaged through this paddle demonstrated ≤ 15% reduction in spatial resolution, ≤ 7.5 dB signal loss, ≤ 3 dB contrast loss and range lobe levels ≥ 35 dB below signal maximum over 4 cm. TPX paddles rbooi@umich.edu )

Electrode paddle for neurostimulation

Abstract: An implantable electrode paddle for use in a neurostimulation system may include a dorsally-projecting lead that allows all of the edges of the electrode paddle to be situated near a vertebral body for stimulation of neural structures. Embodiments may include one or more flanges for cooperating with a vertebral body and thereby stabilizing the electrode paddle. Embodiments of the present invention may also include features to allow an electrode paddle to be divided during surgery. Embodiments of the present invention may also include an electrode paddle having a plurality of paddle sections, wherein at least one of the paddle sections comprises a plurality of asymmetrically configured contacts. Embodiments of the invention include a method of assembling a neurostimulation system and a method of implanting an implantable system in a body, wherein the implantable system includes an electrode paddle that may be divided into a plurality of paddle sections.

Mixer for 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.

Stress above Wind-Plus-Paddle Waves: Modeling of a Laboratory Experiment

Abstract: A model based on wind-over-waves coupling (WOWC) theory is used to simulate a laboratory experiment and to explain the observed peculiarities of the surface stress distribution above a combined wave field: wind-generated-plus-monochromatic-paddle waves. Observations show the systematic and significant decrease in the stress as the paddle wave is introduced into the pure wind-wave field. As the paddle-wave steepness is further increased, the stress level returns to the stress level characteristic of the pure wind waves. Further increase in the paddle-wave steepness augments the stress further. The WOWC model explains this peculiarity of the stress distribution by the fact that the paddle waves significantly damp the wind waves in the spectral peak. The stress supported by these dominant waves rapidly falls when the paddle wave is introduced, and this decrease is not compensated by the stress induced by the paddle wave. With further increase in the steepness of the paddle wave, the stress supported by dominant wind waves stays at a low level while the stress supported by the paddle waves continues to grow proportional to the square of the steepness, finally exceeding the stress level characteristic of the pure wind-wave field.

Integrated circuit package system with leads separated from a die paddle

Abstract: An integrated circuit package system is provided including forming a leadframe having a frame and a die paddle having leads thereon. The leads are held with respect to the die paddle. The leads are separated from the die paddle, and a die is attached to the die paddle. Bond wires are bonded between the leads and the die. The die and bond wires are encapsulated. The leadframe is singulated to separate the frame and the die paddle.

Toner Paddle for Distributing Toner Within An Image Forming Device

Abstract: The present application is directed to devices for moving toner within an image forming device. In one embodiment, the device includes a reservoir with an inlet that leads into the reservoir through a first sidewall. New toner may be introduced through the inlet and into the reservoir. A paddle may be positioned within the reservoir to move the toner from the inlet and through the reservoir. The paddle may prevent the toner from accumulating at the inlet which may act as a block to prevent further toner from being moved into the reservoir. The paddle may include a shaft with a weighted first arm extending from the shaft in a first direction and a second arm extending from the shaft in a second direction. The arms are weighted such that the first arm is heavier than the second arm. The paddle is positioned within the reservoir such that rotation of the paddle moves the toner from the inlet throughout the reservoir.

Thin Plastic Leadless Package with Exposed Metal Die Paddle

Abstract: A method of making electronic packages includes providing a leadframe strip that includes a plurality of leadframes, wherein the leadframes comprise a plurality of leads, etching a surface of each of the leadframes to form an opening, wherein each of the leads has a lead tip that connects to a die paddle within the opening, isolating each of the leads from the die paddle, adhering a tape to a bottom side of the leadframe strips, leads, and die paddle, attaching a die to the die paddle, placing ball bumps on each of the lead tips, and connecting the die to the ball bumps. The electronic package includes a leadframe having a plurality of leads, wherein each of the leads has a lead tip, an opening formed within the leadframe, a die paddle that is disposed within the opening and is isolated from each of the lead tips, a tape that is adhered to a back side of the leadframe, leads, and die paddle, and a die, wherein the die is attached to the die paddle and is connected by wires to a bump disposed on each of the lead tips.

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.

Hockey Stick Blade Having Rib Stiffening System

Abstract: A composite hockey stick blade having a rib stiffening system. The rib stiffening system consists of one or more internal wall structures, or ribs, located within strategic portions of the rear face of the paddle that provides localized regions of increased longitudinal stiffness located within the overall structure of the paddle. These ribs may also control the torsional rigidity of the paddle. The ribs also reduce the weight of the blade without reducing the stiffness and rigidity of the blade. The hockey stick blade may be utilized as a replacement blade for a two-piece hockey stick, or may be a portion of a one-piece hockey stick.

Cutting device, finisher and bookbinding system provided therewith

Abstract: A cutting device that cuts an edge portion of a sheet bundle having plural sheets stacked, includes: a cutting blade; a paddle provided on a side of the cutting blade, which removes chips attached to the cutting blade by rubbing a side surface of the cutting blade; a controller which controls drive of the paddle. The controller includes a judging section which compares a length of the chips in a direction perpendicular to an edge side of the sheet bundle to be cut by the cutting blade with a predetermined length that has been preset. When the length of the chips is shorter than the predetermined length, the controller makes the paddle to rotate in a predetermined direction, and when the length of the chips is longer than the predetermined length, the controller makes the paddle to rotate in a reverse direction.

Integrated circuit package system with shielding

Abstract: An integrated circuit package system comprising: providing an elevated tiebar; forming a die paddle connected to the elevated tiebar; attaching an integrated circuit die over the die paddle adjacent the elevated tiebar; attaching a shield over the elevated tiebar and the integrated circuit die; and forming an encapsulant over a portion of the elevated tiebar, the die paddle, and the integrated circuit die.

Multiple die paddle leadframe and semiconductor device package

Abstract: A leadframe and semiconductor device package with multiple semiconductor device die paddles for accepting multiple semiconductor devices is disclosed, wherein the leadframe increases semiconductor device density and reduces cost by integrating the multiple dies into a semiconductor device package with a relatively small footprint. The leadframe may include at least one full-metal die paddle and at least one reduced-metal die paddle, which may form a unified or hybrid die paddle. The leadframe may enable electrical coupling of multiple semiconductor devices to a common leadfinger and/or die paddle, where internal leadfingers coupled to the common leadfingers and/or die paddles may receive the electrical coupling means from the semiconductor device. Surfaces of one or more die paddles of the leadframe may be exposed to the outside of the semiconductor device package to enable electrical testing of and/or provide heat dissipation from one or more of the semiconductor devices attached to the leadframe.

Damper for an air duct

Abstract: A damper device for use with an air duct provides a paddle positioned within the duct and an axle extending distally from, and in a common plane with, the paddle through the duct wall, to a position for manual adjustment of the paddle within the duct. A bushing is tightened against the wall of the duct by a threaded knob and frictionally holds the axle in place using a combination of axially oriented fingers and O-rings. A handle is engaged with the end of the axle, enabling manual adjustment of the angular position of the paddle from outside the duct. The handle is in fixed alignment with the orientation of the paddle's peripheral edge, allowing for identification of the approximate angular position of the paddle from outside the duct, even when the duct is covered with a layer of insulation.

Rotary Pawl Glove Box Latch

Abstract: A slam to close, glove box latch includes a housing, a paddle structure connected to rotate on the housing, a rotary pawl mounted to rotate in the housing, and a lock plate carried by the paddle structure to selectively engage the rotary pawl to inhibit its movement. The rotary pawl is spring biased to the open position. The paddle structure is spring biased to the closed position. The paddle structure includes guideways in which the lock plate operates. When the paddle is moved to the open position, the pawl is released to rotate open and the lock plate is carried to an interference-friction position with the pawl whereby the paddle is held in the open position. When the pawl is closed by the slam action of the latch, the interference-friction with the lock plate is released and the paddle structure returns to the closed position. Biasing is limited to two springs. The volume (envelope) of the latch is minimized.

Kitchen hand tool

Abstract: A kitchen hand tool for crushing, slicing, or juicing food products. The tool is operated by closing two handles that rotate a drive gear that engages the ratcheting tooth portion of a crush paddle resulting in the movement of the crush paddle toward a basket, crushing and discharge of the food item through the basket. A drive pawl forces the drive gear to rotate counterclockwise, which in turn forces ratcheting tooth portion and subsequently the crushing paddle down in a clockwise direction applying crushing force on the garlic or any item placed in the crushing area. As the drive gear turns until it clicks past a locking pawl. This cycle of opening and closing the handles is repeated until the crush paddle is fully advanced and can move no further and is against the basket.

Gas liquid dispersion stirrer

Abstract: Disclosed is an air-liquid dispersing agitator that is provided with a wheel boss (1). The wheel boss (1) is horizontally fixedly provided with a round plate (2). Plural paddles are fixed around the edge of the round plate (2). Each paddle (3) is provided with an opening (31). The openings will greatly improve flowing state of liquid. Part of the liquid will flow through the openings from the front faces of the paddles to the back faces, and thereby energy consumption will be decreased and a large quantity of air accumulating in the trailing vortex area will be dispersed, which improves air dispersing property of the agitator and optimizes agitating effects.

Snap-on paddle and method of converting a conventional pickup tine into a paddle

Abstract: A snap on paddle for effectively and quickly converting a fully intact, non-broken tine into a paddle such that, in use, an increased amount of crop is swept into a harvester combine. The snap on paddle includes a receptacle which is configured to engage the fully intact, non-broken tine. The receptacle consists of a generally open channel having a plurality of walls which contact different parts of the tine. A fin half is located proximate each side of the receptacle and tabs are provided for locking onto the bat of the tine. The paddle is configured such that the tine can be slipped in the receptacle and the tabs snap on the bat of the tine, thereby securing the paddle in place over the tine. As such, the paddle can be snapped onto a pickup tine without having to use any tools.

Integrated circuit package system with integral inner lead and paddle

Abstract: An integrated circuit package system is provided including forming a paddle, an outer lead, and an inner lead between the paddle and the outer lead; forming a non-vertical paddle edge of the paddle and a non-vertical lead edge of the inner lead facing the non-vertical paddle edge; and encapsulating an integrated circuit die over the paddle.

Multi-Player Virtual Ping-Pong Game

Abstract: In this paper we show how a motion capture system and feedback mechanism can be integrated into a virtual ping- pong game to create a multi-player platform. To trace the motion of each player, optical markers are attached to different places on each player's paddle. For tactile feedback, we designed a controller for a DC (Direct Current) motor, which is also attached to the paddle. This controller communicates with the game server through wireless Bluetooth technology. When the game server detects a collision between the paddle and ball, the controller receives the message from the game server and then triggers one of the respective paddle's DC motors to vibrate depending on the position of the impact on the paddle. During an exhibition many people positively responded to the game.

Paddle clip and method for using same

Abstract: A paddle clip for a human powered watercraft, comprising a first flexible resilient portion having an opening and shaped so that the first portion, when flexed, fits around the gunwale or cockpit rim of the watercraft with a portion of the gunwale or cockpit rim received through the opening in the first portion; and a second portion including a flexible resilient clip portion for remove ably receiving a cylindrical shaft of an oar or paddle used by a human to move said watercraft. The paddle clip may further comprising at least one accessory clip for receiving an additional cylindrical shaft or an accessory. The paddle clip can be configured to be to install within two to five seconds, repositioned or removed from the watercraft without tools or hardware and without drilling holes or otherwise damaging the watercraft. The combination of the paddle clip and a watercraft. A method for using the paddle clip in a watercraft, with an oar or paddle.

Modeling and identification of the hysteretic dynamics of an MR actuator for its application to semiactive control of flexible structures

Abstract: This paper presents the results of modeling a shear-mode MR damper. The prototype damper consists of two steel parallel plates and in the middle, there is a paddle covered by foam saturated with MR fluid. The force is produced when the paddle is in motion and the magnetic field generated by a coil in one end of the device reaches the fluid. Several response forces were captured at different displacement excitations and magnetic field levels. The goal is to find a relationship between the velocity, the control voltage (inputs of the system) and the force generated by the device. The results of predicting the force using the Bingham, Bouc-Wen and Hyperbolic Tangent based models are compared and the suitability of these models is discussed.

Thermal control apparatus

Abstract: Disclosed is a thermal control apparatus which comprises a base plate associated with a target object in a heat-exchangeable manner therebetween, at least one heat-exchange paddle attached to the base plate in such a manner as to be selectively deployed and retracted, paddle drive means provided at an end of the base plate and adapted to drive a deployment movement and a retraction movement of the heat-exchange paddle so as to change an angle of the heat-exchange paddle, and a heat transport element provided to connect the base plate and the heat-exchange paddle.

Dule opening type multifunctional rotating evaporation apparatus

Abstract: The double-port multi-function rotary evaporator comprises a temperature control heating tank, a rotary evaporation bottle, a rotary driver and a support, and is characterized in that necks on both ends of the double-port rotary evaporation bottle (3) are provided with an identical axle center; an angle ranging from 20 degrees to 70 degrees forms between an axial lead of the evaporation bottle (2) and the level. Inside the evaporation bottle (2), a stirring paddle (7) is provided and cross section of its propeller blade (7a) is falcate; distance between outside fringe of the propeller blade (7a) and the evaporation bottle body (2a) ranges from 0.1mm to 5mm; a handle of the propeller blade is fixed to a sealing shaft (7b); the evaporation bottle (2) and the stirring paddle (7) are driven by a motor (3a) and a motor (3b), respectively. When the utility model is in service, the overall system is ensured to be aseptic without assembling or disassembling the container; a reaction container can be large, accordingly productivity is improved; technical process is simplified and operation time is reduced.

Mixer lifting system

Abstract: A mixer which comprises a body 1 connecting with a supporting rod 5, a power system located within the body for driving a mixing paddle to rotate for mixing, and a lifting system 10 for adjusting the location of the body on the supporting rod. The supporting rod comprising a set of teeth 9 distributed on the supporting rod in an axial direction, the lifting system comprising a handle 11 and a gear 14 which is operable with the handle and engaged with the teeth, the body being at a fixed location with respect to the teeth or gear and a lifting system with a lift-locking means having a first member 16 and a second member 17 engaged with each other to limit rotation of the gear.