Showing papers on "Paddle published in 1999"

Instrument for evaluating balance of knee joint

Abstract: A knee joint balancing instrument (10) having a first body (14) that includes a first paddle (24) for engaging a proximal end of a tibial bone and a second body (18) that includes a second paddle (50) for engaging a distal end of a femoral bone. A rack (16) is attached to the first body and is moveable relative thereto in a superior-inferior direction. The second body is pivotally mounted to the rack for pivoting about an axis extending in an anterior-posterior direction. Tension can be induced in the medial and lateral soft tissues of the knee joint by moving the rack.

Medical lead with sigma feature

Abstract: An implantable medical lead for spinal cord, peripheral nerve or deep brain stimulation comprises a lead body which includes a deformable sigma segment preferably in the shape of a sine wave and a lead paddle coupled to the lead body at the distal end thereof. The lead body at its proximal end may be coupled to an implantable pulse generator, additional, intermediate wiring or other stimulation device. The lead paddle may comprise a plurality of electrode contacts for providing electrical stimulation to targeted human tissue. The lead body, which defines the sigma segment, in a plane, couples the lead paddle and pulse generator. The sigma segment provides flexing and bending of the wire when a patient shifts or moves, and especially provides longitudinal extension between the pulse generator and lead paddle.

Apparatus to heat and froth milk utilizing counter rotating mesh tabs paddles

Abstract: The invention includes an apparatus to automatically heat and froth milk for beverages. The apparatus includes a container, a lower paddle group and upper paddle group located above the container bottom. Each paddle group includes at least two paddles. The lower paddle group is adapted to rotate in a direction that is counter to the rotation of the upper paddle group. The apparatus further includes a heater disposed firmly against and below the container bottom.

Method of making chip scale package with heat spreader

Abstract: A dense semiconductor flip-chip device assembly is provided with a heat sink/spreading/dissipating member which is formed as a paddle of a metallic paddle frame in a strip of paddle frames. Dice are bonded to the paddles by e.g. conventional die attach methods, enabling bump attachment and testing to be conducted before detachment from the paddle frame strip.

Universal kayak/canoe paddle

Abstract: There is provided a kit for forming an adjustable paddle which, in kayak embodiment, includes a first paddle end and a second paddle end each having a blade an a shaft, an intermediate connecting shaft telescopically engaging the shafts of the paddle ends, with the intermediate connecting shaft having indicating means for indicating the center of gravity and distance indicating means, along with means for fixedly securing the shaft and second shaft through the intermediate connecting shaft The arrangement ensures that a properly balanced paddle is obtained An optional handle may be provided for converting the kayak paddle to one or more canoe paddles

Measurement of toner level employing sensor on paddle

Abstract: The level of powdered toner in a toner reservoir of a printer or copier is determined by ascertaining the time that it takes a stirring paddle to rotate from a second of two fixed ridges adjacent the top of the reservoir until the toner is engaged. A sensor, which is preferably a piezoelectric element or a strain gauge, is preferably mounted on the end of the stirring paddle to engage each of the two fixed ridges. When the sensor flexes after engaging each of the ridges, two closely spaced electrical pulse are produced. When the sensor engages the toner, another electrical pulse is produced, and the time between the second and third pulses is used to determine the level of the toner in the toner reservoir. If the stirring paddle is flexible, it may engage the ridges and the toner so that the sensor could be mounted on the stirring paddle to not engage the ridges or the toner but only to sense flexing of the stirring paddle for producing the electrical pulses. Instead of using the ridges, an emitter wheel may be employed to produce a pulse when the stirring paddle is in its substantially vertical position.

High current capacity semiconductor device housing

Abstract: A semiconductor device package is provided which can accommodate currents larger than those of similarly sized standard device packages such as the “TO-247” package. Higher currents are accommodated by allowing a larger semiconductor die to be mounted on the device's lead frame than can be mounted on a similarly sized standard package. An improved mold clamping area is also provided which reduces the area from which damaging moisture can enter the molded package and increases the distance required for moisture to contact the die. Clip arrangements are also provided to mount the device package to a circuit board or heat sink, thereby allowing the increased operating temperatures associated with the increased operating currents to be efficiently dissipated. The semiconductor device package has a lead frame having a large area paddle section and at least one leg extending therefrom, the lead frame being of substantially constant thickness, and the paddle section being continuous and free of openings therethrough. A semiconductor die is mounted to the paddle section of the lead frame, the semiconductor die occupying substantially all of the surface area of a side of the paddle section upon which the semiconductor die is mounted. The full surface of the die and at least the side of the paddle section upon which the semiconductor die is mounted are covered by a common and uninterrupted mold housing.

Semiconductor package for high frequency performance

Abstract: An improved lead frame structure for use in a semiconductor package, including: a plurality of leads; a paddle structure electrically isolated from the leads, the paddle structure including at least one lower paddle section having a first top surface to which a die may be attached, at least one mesa section disposed proximate the paddle section and having a second top surface disposed at a different elevation than the first top surface, the lower paddle section and the mesa section being joined by a wall section; and a plurality of tie bars attached to the paddle structure for supporting the paddle structure; whereby contact pads of a die attached to the first top surface may be electrically connected to the second top surface and to the leads prior to encapsulation thereof. A plurality of tie bars extends from opposite edges of the paddle structure, the tie bars providing for stabilizing the paddle structure during package fabrication.

Paddle design for plating bath

Abstract: An electroplating system circulates solution between an anode and a workpiece mounted to a cathode. A shaped agitation paddle is reciprocated immediately adjacent to the cathode workpiece to improve performance of the system. The paddle is an elongated prism having a generally flat side that is parallel to the workpiece. The flat side has a fluid port connected to a pump. The solution may be pumped with either positive pressure to force the solution against the surface of the workpiece, or negative pressure to draw the solution away from the surface of the workpiece. In an alternate embodiment, the cathode workpiece is rotated in the solution above an anode with a stationary, shaped paddle in between them.

Apparatus and method for percutaneous implant of a paddle style lead

Abstract: A needle and method for introduction of a paddle style lead near a spinal column or other nervous system structures, central or peripheral, of a patient includes a body having a proximal end and a distal end, and a lumen with a continuous oblong cross section. The distal end of the body has an introducer portion where the top side of the introducer has an orifice to allow for protrusion of the paddle style lead from the lumen into the spinal column area or into or near other nervous system structures. The needle has a hub affixed to the proximal end of the body which is adapted to receive a stylet. The needle may also have a stylet that is inserted within the lumen. The introducer of the needle has a curvature extending from the bottom side toward the top side at the distal end and guides the introduction of the paddle style lead near the spinal column or other nervous system structures.

Image forming device and process unit

Abstract: PROBLEM TO BE SOLVED: To provide an image forming device of a vertical transportation type which can surely carry much toner staying on an upper surface of a photoreceptor drum to a storage section. SOLUTION: The image forming device is provided with a transportation means 6 for transporting recording paper along a vertical direction, a rotating photoreceptor drum, an exposure unit, a developing unit, a transfer unit 11 and a cleaning unit arranged above the photoreceptor drum. The cleaning unit is provided with a blade 23 for stripping toner deposited onto the upper surface of the photoreceptor drum after transfer, a paddle 26 rotating-moved so as to approach the photoreceptor drum and then part therefrom, a magnet 28 which is provided at the paddle, moves together with the paddle and acts magnetic force to the toner staying on the upper surface of the photoreceptor drum and a scraper 29 for scraping off the sucked and deposited toner by coming into contact with a part being a front side toward a rotating-moving direction of the paddle.

Method and apparatus to automatically heat and froth milk for beverages

Abstract: The invention relates to an automatic beverage frother. The beverage frother includes a lower housing assembly having a motor coupled to a gear train. The gear train may be removeably coupled to an upper paddle group and a lower paddle group disposed within a container. Each paddle group rotates about the longitudinal axis of the container in opposite directions. Within each paddle group is at least one paddle where each paddle is formed of a frame having mesh disposed within the frame. Other embodiments are disclosed.

Ergonomic kayak paddle

Abstract: A kayak paddle with a generally straight shaft that is preferably about 0.7 inches in diameter, the shaft is also conically tapered at either end. A left hand grip and a right hand grip are mounted on the shaft, and there is a blade at either end of the shaft. The blades each have a conically tapered socket to accept the tapered ends of the shaft. A portion of the socket remains vacant when the shaft is fully inserted, the vacant portion of the socket serves to trap sufficient air to ensure that the paddle will float. The mechanical connections thus formed prevent the shaft from rotating in the blade sockets and also minimize the amount of stress placed on the adhesive used to fix the shaft in the sockets. The grips ensure that the user's hands can be consistently placed and oriented on the shaft; because of the small diameter of the shaft, the user's hands can easily encircle the grips, and the user is thereby afforded a high degree of control over the paddle. Further, the grips are contoured so as to more ergonomically position the user's hands at natural gripping angles, with respect to the horizontal axis of the shaft; the natural gripping angles serve to minimize stresses on the user's wrists, hands, and arms. Additionally, the contours of the grips substantially prevent the user's hands from sliding along the shaft, and prevent the shaft from rotating in the user's hands. Finally, the grips have knuckle guards, preferably integrally formed with the grips, which serve to protect the user's hands in the event of an impact with obstructions such as rocks or trees.

Vertical agitating apparatus

Abstract: Provided is a vertical agitating apparatus which can shorten the time of vertically uniform mixing, uniformalize flow rates in the vertical direction, and shorten the time of heat transmission in a deep liquid agitating tank, an agitating tank having a conical bottom part with an acute apex angle of less than 60 deg. or in a tank combination of the former two tanks, and in which a rotary shaft is arranged in the tank so as to be rotatable by a drive located outside of the tank, bottom paddle blades having a large area are attached to the lower part of the rotary shaft, and lattice blades in combination of vertical grids and horizontal arms are provided to the rotary shaft above the bottom paddle blades, the distance between the outer edge of the vertical blades at the outermost end of the lattice blade and the center of the rotary shaft being set so as to be greater than that of the bottom paddle blades.

Paddle floatation apparatus for kayak self rescue

Abstract: An improved paddle floatation apparatus comprising a unitary inflatable sleeve that fits over a kayak or other shallow draft watercraft paddle blade. When installed on a paddle blade, the entire paddle may be configured as an outrigger to assist the user in righting the kayak and reentering the cockpit from the water. The shape of the float when inflated is substantially triangular when viewed on end and includes numerous stabilizing surfaces that engage the water to resist unintentional movement in every direction.

Cooling for the paddle tip at a gas turbine has a system to generate coolant air eddies at the gap between the paddle tip and the housing section where the hot gas flows through

Abstract: The paddle (24) for a gas turbine, within the turbine housing (17), has a cooling system (25) at the paddle tip to generate lateral eddies (26) of coolant air in the gap (21) between the paddle crown (11) and the housing section (18). An effective gap (27) for the hot gas flow is formed between the air eddies (26) and the housing section with a gap width (S2) which smaller than the width (S1) of the first gap (21).

Flow promoting material handling conveyance construction

Abstract: An abrasion resistant material is combined with a flow promoting material to provide a conveyance that is flow promoting and wear resistant. Holes formed in a UHMW conveyance allow a ceramic overlay to bond to itself creating a mechanical bond with the UHMW. In a first embodiment, a ceramic composite overlay is form fit to UHMW mixing paddle. The paddle has a tongue with holes therethrough. The ceramic overlay fills the holes creating a mechanical bond between the paddle and the ceramic composite. In another embodiment, a ceramic overlay is bonded to a steel insert received in a channel formed in the distal end of a mixing paddle.

Lead frame and bottom lead semiconductor package using the lead frame

Abstract: A lead frame includes a pair of guide rails separated at a predetermined space; at least one dam bar for connecting the pair of guide rails; a die paddle for mounting a semiconductor chip between the dam bar; a tie bar for supporting the die paddle; a plurality of leads each consisting of a first lead having a predetermined length extended from the dam bar between the dam bar and the die paddle, a second lead connected electrically to the first lead and formed bent in a first direction, and a third lead connected electrically to the second lead and formed bent in a second direction.

Ergonomic canoe paddle

Abstract: The invention is an ergonomic canoe paddle. The paddle includes a shaft having a shear side and an opposed drag side, a blade having a shear surface and an opposed drag surface, wherein the blade is secured to a bottom end of the shaft so that the shear surface of the blade is secured to the shear side of the shaft and the drag surface of the blade is secured to the drag side of the shaft, and a handle secured to a top end of the shaft. The handle includes a central grip bar secured to the top end of the shaft, a right grip stem and a left grip stem secured to opposed ends of the grip bar. The right and left grip stems extend away from the shaft in a direction that is both about twenty degrees from a plane perpendicular to a longitudinal axis of the shaft, and that is also away from the drag side of the shaft about sixty-five degrees from a plane roughly parallel to the shear surface of the blade. The right and left grip stems are dimensioned to receive a user's grip so that when a user wraps a hand around either right or left grip stem, the blade is disposed in an angular alignment that compensates for non-linear thrust of the paddle as the shear surface of the blade shears water to propel a canoe through the water.

Soft touch automotive latch handle

Abstract: Method of making an automotive latch handle intended for operation by manually pulling fingertips across a margin of the handle; it includes the steps of: a) molding a latch handle of a first essentially rigid plastic defining an area support for the margin, which plastic when fully solidified and cured has a stiffness of 0.8-5.8 GPa and a durometer ratio of 710,000 shore A; and b) overmolding the support area of the first plastic with a second plastic to define the margin, which margin when fully solidified and cured defines a finger gripping pad that has a stiffness of <0.01 GPa and a durometer ratio in the range of 35-85 shore A. An automotive latch handle structure that comprises: a) a generally flat paddle having means facilitating linear or pivotal movement, the paddle having been formed by molding of a first essentially rigid plastic with a stiffness of 0.8-5.8 Gpa; and b) an integrally overmolded second plastic defining a gripping pad for the fingers, the pad being molded to a margin of the paddle at least along one edge.

Vehicle window cleaning apparatus

Abstract: A window cleaning apparatus (10) includes a handle (14), a paddle (12) and a cleaning element (16). The paddle (12) is detachable and pivotally attachable to the handle (14). A spring biased slider (82) carried on the handle (14) has a pivot pin (88) on one end releasibly engagable with a hinge receiver (102) on the paddle (12). The cleaning element (16) is one of a plurality of interchangeable bodies, each having one major surface engagable with one major surface of a paddle and side edges having elastic (118) mounted thereon to draw the ends of the side edges of the body inward to form an opening smaller than the outer diameter of the paddle (12) to releasibly attach the body of the cleaning element (16) about the paddle (12). The bodies (110) are formed of an absorbent material for use as a drying element and with an intermediate fluid carrying layer and a rough mesh layer for use as a scrubbing element.

Valve and vane structures for water cooling air conditioner heat exchanger fins

Abstract: A mechanical control apparatus is provided for controlling the spray or misting of water into the immediate vicinity of the condenser coils in the compressor unit of an air conditioner, and comprises a hinged, vaned paddle member; and a water valve mechanically connected to and operable by the paddle member. The paddle member is mounted so that blown air flow from an air fan in the compressor unit will impinge on the paddle member, will and cause it to pivot upwardly about a hinge. The paddle member has a mechanical valve operating member, and is connected to a source of pressurized water, so that when the valve is open, water will pass through it to at least one nozzle mounted on the compressor unit to be sprayed or misted into the immediate vicinity of the condenser coils. The mechanical linkage between the paddle member and the valve is such that when the paddle member is pivoted upwardly, the valve will be opened; and when the paddle member is in its horizontal orientation, the valve will be closed. The hinged paddle member has a first half region which is distal with respect to the hinge, and a second half region which is proximal the hinge; and there are a plurality of vane elements which are spaced away from each other. The vane elements which are in the first half region are each sloped upwardly and in a direction towards the hinge, and the vane elements which are in the second half region are each sloped upwardly and in a direction away from the hinge.

Electrical circuit interruption device having improved arc extinguishing apparatus including an arc paddle

Abstract: A circuit interrupter in the form of a circuit breaker (10) is shown having a movable contact (14a) which moves between contacts engaged and contacts disengaged position relative to a stationary contact (16a). An arc paddle (20) is mounted in a housing (12) for spring biased pivotal motion of an arc dissipating portion between a position out of alignment with the movable and stationary contacts and in engagement with the side of the movable contact when the contacts are in the contacts engaged position and a position in which the arc dissipating portion is in alignment with and in between the contacts when the contacts are in the contacts disengaged position to force arcs which occur between the contacts to extend their travel path and dissipate the arc in an improved shortened period of time. In an alternative embodiment the arc paddle (22) is generally U-shaped having two legs (22a, 22b) connected by a bight (22c). The paddle is pivotably mounted at the bight with one leg disposed in alignment with but beyond the contacts and the other leg disposed out of alignment with the contacts and closely adjacent the side of the movable contact when the contacts are in engagement. When the movable contact separates from the stationary contact, motion is transferred to the one leg causing the paddle to pivot with other leg moving into alignment with and in between the two contacts.

Apparatus and method for sensing the fluid level in a mixing device

Abstract: A sensor for detecting the level of circulating fluid in a tank comprises a paddle blade disposed at a particular height and oriented generally radially from a rotating shaft in the tank. A sensing device, such as a strain gauge, is attached to the paddle blade to detect when the paddle blade is in at least one of a normal and a displaced position, thereby indicating that fluid is absent or present at a particular level. Additional sensors may be used in the same tank to provide fluid level feedback at more than one height.

Power supply coupler, power supply device, receiver and electromagnetic induction type noncontact charger

Abstract: PROBLEM TO BE SOLVED: To enable adoption of an infrared communication system as a communication system between a power supply coupler and a receiver, and further, secure reliability of infrared communication, even if a coupler case main part as a whole is made of opaque resin. SOLUTION: An electromagnetic induction type noncontact charger 1 comprises one set of a power supply paddle 2 and a receiving charge port 3. The power supply paddle 2 is attached to the tip of a cable extending from a power supply device, and the receiving charge port 3 is mounted on a vehicle. In a state where the power supply paddle 2 is inserted in the receiving charge port 3, charging is conducted by utilizing electromagnetic induction and a transmission coil 12 which functions as a primary coil and a receiving coil 34 functions as a secondary coil. Infrared communication devices 15, 16 and 38 for conducting communication between the power supply paddle 2 and the receiving charge port 3 in a state that the power supply paddle 2 is completely inserted in the receiving charge port 3 are built in the power supply paddle 2 and the receiving charge port 3 respectively. A housing 30 is overall made of a colored opaque infrared-transmitting resin.

Table tennis handle-less racquet and multipurpose combination table

Abstract: A table tennis handle-less paddle or racquet, and a multipurpose sport & entertainment game-study convertible table are disclosed. A racquet is characterized by combination of two separate impact surfaces, between which a players hand is inserted. The accessories and games are specifically designed as an integrated package, to develop motor skills for the youngest players, and to facilitate learning table tennis, starting from age five to six. A concept of novel hardware is also applicable to older children and adults as well. A multipurpose convertible table is constructed to serve as a game apparatus (table tennis or surface propelled puck game), or as a student study-work fixture.

Device for continuously applying self-adhesive handles to moving articles

Abstract: A device that continuously applies self-adhesive handles to moving articles using a pivotable paddle that can rotate approximately 180 degrees from a vertical stopped position. The rotation of the paddle is synchronized with the movement of the articles so that an adhesive tape can be applied to a moving article by placing a first end of the tape on a downstream face of the article, and a second end of the tape is applied to an upstream face of the article, thereby forming a handle on the article. Clamps are used to temporarily connect the paddle to the tape as well as pull the tape while a knife is used for cutting the tape.

Effects of paddle configurations on the uniformity of the reverberation chamber

Abstract: This paper is a continuation of a basic three-dimensional reverberation chamber model we built using FDTD as described previously (1999). In this paper, the uniformity is studied in detail when the location of the paddle and the relative size of the paddle are varied. The objective of the study is to find the effects of the paddle geometry and location on the uniformity of a reverberation chamber. Simulation results show that the paddle located on the ceiling can achieve a better uniformity than when located at the side of the chamber. With a big paddle ratio (PR), there is an increase in the effectiveness of the paddle. The paddle size should be at least half of the chamber dimension to limit the spatial deviation of average field around 3dB in terms of amplitude and 3% in terms of angle.

Inductive charger coupling

Abstract: An inductive charger coupling for charging a battery includes a generally flat charging paddle and a charging receptacle. The charging paddle includes a primary core and a primary coil. The paddle is electrically connected to an external power supply. The charging receptacle includes a secondary core and a secondary coil. The receptacle is electrically connected to the battery. The secondary core engages the primary core when the charging paddle is plugged into the charging receptacle. The paddle lacks corners at its distal end, and the secondary core is shaped to conform to the distal end of the paddle, which narrows the overall width of the coupling.