Showing papers on "Paddle published in 1991"

Flush door latch assembly

Abstract: A flush door latch assembly having a housing with a recess defined therein and a paddle within the recess. Pulling on the paddle causes a cam having a helical cam face to cooperate with a cam follower to cause rotation of a pivot plate that retracts the plunger bolt and permits a door, hatch or the like having the present door latch assembly to be opened. The plunger bolt travels towards the same side of the latch assembly that the paddle travels towards when the plunger bolt is being retracted.

Refuse collecting device

Abstract: An improved device for collecting refuse by using a fixed holding member and moveable expander to releasably hold a bag open by virtue of tension forces exerted across the mouth of the bag. A paddle, spring-loaded to a closed position across the mouth, can also be hingedly rotated to an open position and held in the open position by a trigger. When an animal owner desires to have the paddle scoop refuse into the bag, he can manually move the trigger. This action releases the spring-biased paddle which then rotates under spring bias, scooping refuse before it, to the closed position. The scooped refuse, because of the propelling movement of the paddle's rotation, is thrown on into the bag. A moving mechanism, which is also spring-biased, can both cock the paddle in the open position and also release the bag. As the moving mechanism pulls the paddle toward the open position, a latch pin connected through a cable to the paddle is caught and held by the trigger. The moving mechanism can then return to its normal resting position under the action of spring bias, while the paddle remains in the caught, cocked position. When it is desired to release the paddle, the trigger is manually depressed and the paddle returns under spring-bias to its normally closed position.

Fluid driven power system

Abstract: An elongated channel has an entrance leg and a parallel exit leg and a loop therebetween at one end and a sump at the other end into which the exit leg empties. A power supply operates a fluid in the sump to deliver fluid into the entrance leg. A plurality of spaced paddle wheels are mounted for rotation on supports above the channel with each paddle wheel having a plurality of spaced substantially radially directed paddles conforming in shape to the space within the channel and being slightly spaced therefrom to inhibit any contact therewith. A plurality of generators are driven by the plurality of paddle wheels, and the generators are coupled to utilization or storage devices for using or storing the energy harnessed by the generators. Additional intermediate legs of the channel and other loops can form a sineous path from the location of delivery of fluid by the pump to the location of emptying of the exit leg into the sump. The paddle wheels in the exit legs are offset from the paddle wheels in the entrance legs, so that a plurality of elongated shafts can connect aligned paddle wheels in the entrance legs, and another plurality of elongated shafts can connect aligned paddle wheels in the exit legs. The generators are connected to the plurality and another plurality of the shafts. The channel may be level with the sump disposed below or it may be slightly higher in elevation at the location of delivery of the fluid into the entrance channel and descend in elevation at the location of emptying of the exit leg into the sump.

Paddle shaft assembly with adjustable-pitch paddles

Abstract: A paddle shaft assembly having adjustable-pitch paddles for use in a magnetic stirring apparatus. The paddle assembly is particularly useful for magnetic stirring apparatus used for suspending cell, or tissue, cultures in a growing medium. The paddle shaft assembly includes an upper support shaft lockable to a lower support shaft for allowing the assembly to be mounted within a magnetic stirring vessel closure. The lower shaft includes a bore for accommodating removable stirring magnets. The paddle shaft assembly further includes removable paddle members having a hollow body sized and configured to be positionable within a 360 degree arc upon end portions of stirring magnets.

Sport paddle providing the effects of sound and light

Abstract: A sport paddle is disclosed having a circuit board substrate inside the handle which has a sound light circuit, a counter circuit, and a radio circuit. The opening and closing of the sound light circuit and the counter circuit are controlled by a vibration switch which is actuated. The sound light circuit is connected to an elastic concussion switch to give an amplified reverberatory sound and simultaneously cause a luminous body to illuminate whenever the ball is hit by the paddle. While the elastic concussion switch is connected, the counter circuit is also connected to display on a display screen the aggregated number of times of the ball has been hit. A radio circuit is also provided on the circuit board substrate inside a the handle of the paddle. The opening and closing of the radio circuit is controlled by a switch which allows the user to listen to the broadcasting of a radio station whether or not the paddle is being used in sport.

Paddle latch device

Abstract: A latch retraction device for narrow stile doors which may be hinged either on the left side or on the right side, and which utilizes a push or pull actuator for retracting the latch instead of utilizing a rotary knob for that purpose. The device utilizes inter-engaged toothed elements to provide linear to rotary motion in a novel configuration of parts which permits one set of parts to be utilized to provide either a push or a pull actuation for latch retraction with either a right hand or left hand door and thereby eliminating the necessity to manufacture and inventory a large number of parts to accommodate all four types of desired uses.

Simple determination of power law flow curves using a paddle type mixer viscometer

Abstract: A simple and accurate procedure to determine the flow properties of powerlaw fluids using a paddle type mixer viscometer is described. The approach considers the mixer as analogous to a concentric cylinder system and incorporates the inclusion of end effects in modeling. The procedure significantly reduces data collection because calibration with standard fluids is not necessary to estimate average shear stress and shear rate values.

Swimmer training paddle

Abstract: A swimmer training paddle with a textured leading surface for increasing a swimmer's arm strength and hand stability is disclosed. The paddle takes the form of a rigid, planar fluid resistance member having a textured first surface that directs and momentarily captures water thereon and a second surface configured to engage a swimmer's hand. The momentary capture of water by the textured paddle increases the thrust achieved with each stroke. Water resistively contacts the textured surface of the paddle for a longer period of time than does water contacting the smooth surface of a conventional paddle. In the preferred embodiment, the textured surface comprises diagonally extending, interconnected, contiguous linear recesses or channels which have been found to provide increased thrust without compromising rotational stability.

Accelerometer with rebalance coil stress isolation

Abstract: An improved technique for mounting a coil to a paddle in a force rebalance accelerometer so as to provide relief from temperature induced strains without increasing the mass of the proof mass. The coil (30) is mounted to the paddle (54, 104) at a plurality of mounting sites (60, 62, 64, 110, 112, 114) on the paddle, at least one (62, 64, 112, 114) of which is connected to the paddle by suspension means (76, 78, 86, 88, 120, 122, 130, 132) compliant for movement in the plane of the paddle. In a preferred arrangement, three mounting sites are used, two of which are moveable (62, 64, 112, 114) towards and away from the third, fixed mounting site (60, 110).

Combination paddle, hook and pump and method therefor

Abstract: A combination paddle, hook and pump is disclosed wherein the hook is located at one end of the paddle and is contoured to permit smooth paddling action by the paddle. The hook can be rotated from a closed, non-hooking position to an open, hooking position and has a pair of openings therein to permit the pump to either pump air or water into an object or to pump a fluid such as water from a source of the fluid. The paddle comprises a dielectric material that contains metal particles to reflect a radar beam thereby permitting a boater using the paddle in a raised position to be spotted by radar.

Rotating paddle bin level indicator

Abstract: Apparatus for indicating the level of flowable material in a storage bin that includes a motor mounted within a protective enclosure and coupled by a shaft and clutch arrangement to a paddle disposed within the bin to engage material therewithin. When the material reaches the level of the paddle, drag on the paddle causes the motor to rotate within the enclosure against the force of an adjustable spring to activate switches disposed within the enclosure for indicating material level. The switches also remove power from the motor and apply power to an electrical resistance heater to warm the enclosure and help prevent condensation at low external ambient temperature. The paddle is constructed to enhance drag when used in conjunction with low-density materials.

Wind-driven energy conversion device

Abstract: A power-producing windmill is disclosed. A paddle assembly having a central axis is supported for rotation on a frame. Two spaced-apart lateral sides supports the central axis and forms a channel in which the paddle assembly rotates. A pivotal vane is connected on one end of the channel for regulating the amount of air entering the channel is operated such as to regulate the rotational speed of the paddle assembly. A unique paddle configuration is provided which provides first and second wind-capturing cavities for increasing the total energy conversion efficiency of the wind to electromotive energy.

Accelerometer with support caging

Abstract: An improved accelerometer of the type that comprises a paddle (30), a support (32), and suspension means (34) for suspending the paddle from the support, such that the paddle can move along a sensing axis. The support includes an unclamped portion (42) to which the suspension means is attached, and a clamped portion (40) through which the support is mounted. The invention provides restraining means (72, 100, 120, 132, 134, 176, 196, 206) separate from the clamped portion of the support, for limiting the travel of the unclamped portion in directions normal to the sensing axis, for example, along the hinge axis. The result is an accelerometer able to withstand higher cross axis shocks without failure.

A technique for the generation of short crested waves in wave basins

Abstract: This paper describes a technique for generating short crested waves in a laboratory using a multi element array of paddles. The control signal applied to each paddle in order to create a realistic sea is developed by using the technique of filtering white noise, building upon the preferred method previously used for wave generation in flumes. By using the side walls of the wave basin as reflectors a larger working area can be achieved than by using other techniques, and the need to calculate correlations between paddles in the array avoided.

Crystal-oriented motion sensor and process for manufacturing it

Abstract: A motion sensor, in particular for measuring oscillating, tilting or accelerated motion, is manufactured from a monocrystalline silicon wafer. At least one vertical paddle perpendicular to the wafer surface, which is capable of oscillating in the plane of the wafer, is etched out of the silicon wafer. Means for evaluating the deflection of the at least one paddle are also provided. The front face and rear face of the silicon wafer are (110) surfaces and the delimiting side walls of the etched depression are (111) surfaces. The at least one paddle is arranged in function of the crystallographic angles which form the (111) planes with and in the (110) plane.

Ventilated support plate for clutch

Abstract: A clutch driven disc assembly includes a ventilated support plate and friction element to reduce the build up of heat during use. The support plate includes a plurality of radially extending paddles. A pair of friction elements are secured to the opposed sides of each of the paddles. Each paddle has a plurality of generally parallel slots formed therethrough. The slots may extend generally radially or generally circumferentially relative to the paddle. Each of the friction elements includes a corrugated backing plate having a friction facing secured thereto. The corrugations define a plurality of raised channels in the backing plate. The raised channels are formed such that they are aligned with the slots formed through the support plate when the friction elements are secured to the paddle. Such alignment provides a plurality of channels for the passage of air therethrough as the driven disc assembly rotates during use. Such air flow is helpful in cooling the friction facings when the clutch is engaged and disengaged.

Implements with handles

Abstract: An implement, such as a two-bladed kayak paddle, includes an operating handle 10 having handgrips 14, 15 which, in use, are hold by the two hands respectively of the user. To facilitate manipulation of the implement, the two handgrips are asymmetrically inclined with respect to a common axis passing through the two handgrips, for example they are offset by 11 DEG as viewed along said axis. In other cases, for example where the implement is a wheelbarrow, bicycle, stretcher or walking frame, the two handgrips are asymmetrically inclined with respect to two parallel axes passing through the handgrips respectively. In this case one handgrip may be inclined upwardly at 11 DEG , and the other inclined downwardly at 11 DEG to the plane containing the parallel axes. Alternatively, the implement may have a shaft and a handgrip for rotating the shaft, e.g. a screwdriver, hydrant key or single-bladed paddle.

Capacitance pick-off for force rebalance accelerometer

Abstract: An improved capacitor plate geometry for a force rebalance accelerometer. The accelerometer (10) has a reed (14) that includes a support (32, 82, 142), a paddle (34, 80, 140) suspended from the support for rotational movement with respect thereto, and a force balancing coil (24, 88, 152, 162). The coil is mounted on a surface (86, 150, 160) of the paddle such that it surrounds an area of that surface. The accelerometer also includes a position detecting circuit that provides an indication of the relative position of the paddle with respect to the support. The position detecting circuit includes a capacitor plate (60, 90, 154, 164) on the paddle. The improvement provided by the invention lies in the fact that at least a portion of the capacitor plate is positioned in the area of the paddle surface surrounded by the coil.

Reverse boat oars

Abstract: A reverse boat oar is provided and consists of a mechanism for holding a large gear portion on a distal end of an oar handle arm and a small gear portion formed on a distal end of an oar paddle arm in a meshing rotatable relationship. An oar lock attaches the holding mechanism to a gunwale of a boat, so that when a rower pushes forward on the oar handle arm the oar paddle arm will also go forward. The rower can sit facing the bow of the boat to see where the boat is going.

Document manipulating device

Abstract: A device for manipulating, supporting and utilizing documents such as maps, charts and blueprints. The preferred device is composed of a plurality of paddles (22) which are connected and freely rotatable about parallel axes to which said document is attached. Other embodiments include a releasable paddle coupler (28) and a clamp (72) with paddle clips (70) to hold flat the attached document and to aid in securing the paddles.

Improvements in or relating to paddles.

Abstract: In a kayak or canoe paddle, the paddle handle includes a handgrip 24 the longitudinal axis of which is inclined to the longitudinal axes of the tubular handle portions 30, 31 to which it is connected. The handgrip 24 is separately preformed from the rest of the handle, for example is injection moulded from plastics, and is provided at its end with spigots 28, 29 which engage within the ends of the tubular handle portions and are secured by adhesive and/or rivets. The handgrip 24 may be moulded in two separate parts which are bonded together along a longitudinal plane.

Floc formation controller

Abstract: PURPOSE:To enable higher controlling accuracy by using a forecast runoff turbidity at a sediment pond as calculated from a very small amount of floc per unit capacity determined from image information at the rear of a floc formation pond as feedback control factor to control paddle revolutions to reduce control delay time. CONSTITUTION:A turbidimeter 6 is attached at an incoming water well 1 to measure turbidity of a stock and a turbidimeter 7 at a sediment pond 5 to measure a runoff turbidity. A coagulant injection controller 8 controls the injec tion of a coagulant. A paddle 4 is set at a floc formation pond 3 to stir up a water to be treated. A revolutions controller 10 controls a motor 9 for rotating the paddle. An under water camera 11 is attached at the final stage of the floc formation pond 3. A floc measuring device 12 determines an average parti cle size of floc and a very small amount of floc per unit capacity of the water to be treated based on image information from the camera 11 while determining a maximum floc particle size from an intensity of rotation of the paddle. The rotation intensity of the paddle is controlled based on these values to reduce paddle control delay time with a higher controlling accuracy.

2nd order wave generation and application to shoaling investigations

Abstract: Model tests have been carried out in a wave channel with and without consideration of 2nd order wave components in the control signal for the wave paddle. The wave channel was equipped with a 1:30 sloped bottom starting 57.00 m in front of the paddle. The water depth was 1.00 m during all tests. The Self-Correcting System was proved to be able to suppress unwanted free higher and lower harmonics during the generation process. On the slope measured amplitudes of the 2nd order waves were lower than predicted by 2nd order theory. Commonly used wave height parameters are not influenced significantly by the type of control signal.

Refuse packer assembly

Abstract: A refuse packer includes a paddle (14) which oscillates horizontally about axis (19) through about 200° to sweep refuse into a storage chamber of a vehicle (not shown). The paddle has an actuating assembly (26) supported by a single housing (27) secured to a vehicle chassis. The actuating assembly has a drive shaft with a hexagonal end clamped in a hexagonal opening (21) of the paddle. The drive shaft also has a pinion engaged by a pair of opposed toothed racks each end of each which slides in hydraulic cylinders (35, 36, 37, 38) which act to oscillate the shaft and paddle. A pair of hydraulic resistance cylinders (40 is shown) oppose side loads set up by the engagement of the racks with the pinion. In former arrangements the paddle was coupled to a crank plate moved by hydraulic rams which swung as they reciprocated. This led to uneven torque on the paddle and a tendency to stall midstroke, whereas the present drive provides even torque, throughout the oscillations.

Bird wing shaped oar

Abstract: The utility model relates to a paddle which is used for manpower rowing and manpower transport ships in water towns and is suitable for rowing boats by hands in amusement parks on water. Two movable joints are arranged on a paddle rod of a paddle head or near the paddle head of the utility model, and the movable joints enable the paddle head to fold and spread. Thereby, the paddle head can automatically spread when the paddle head pushes water. When the paddle is pulled back, the paddle head can automatically fold. The resistance is small, and the paddle head does not need to be lifted above water surfaces. The paddle rod is in a bell crank type. The utility model has the advantages of simple structure, easy fabrication, flexible operation, labor saving and high speed.

Solar paddle for artificial satellite

Abstract: PURPOSE: To achieve the effective increase of generated output with relatively small weight increase by providing a reflecting mirror additionally at the edge part of a light receiving face in a solar paddle fitted in blade shape to the body structure of an artificial satellite, and reflecting the reflected light of the sunlight on the light receiving face. CONSTITUTION: A solar paddle 1 is fitted in blade shape to the tip part of a bar like support body 3 protrusively provided at the body structure 2 of an artificial satellite. The solar paddle 1 is provided with a solar panel 5 stuck to one face side of a base material panel 4 of rectangular plate shape, and supported by the support body 3 in such a way that this one face side faces the direction of the sun. In this case, a reflecting mirror 6 of long plate shape formed along the longitudinal direction is fixed to the lower edge of the base material panel 4 in such a state that the reflecting face is inclined diagonally upward on one face side. The solar panel 5 is irradiated not only by direct light from the sun but also by the reflected light from the reflecting mirror 6. The effective increase of generated output is thereby achieved with relatively small weight increase. COPYRIGHT: (C)1993,JPO&Japio

Slowly running feet paddle

Abstract: The utility model provides a slowly running feet paddle-a kind of indoor sports body-building instrument, comprising an elastic paddle made of plastic material and locating protrusions on a rubber soleplate, wherein, the elastic paddle is provided with a plurality of semicircle convex granular solids, and the screw spring is chosen according to different body weights of people. The utility model can be simply used by people without reference to age or sex indoors, the feet step on the paddle moving up and down and make bodies spring up and down by means of the spring force in the manner of jogging or pittypatting, and the slowly running feet paddle cooperating the semicircle convex granular solids stimulates sole vessels to achieve the efficacies of massaging muscles, promoting blood circulation and intensifying foot force.

Paper stacking device

Abstract: PURPOSE:To keep the conveying force constant at all times even in the case where the stacking height of paper is unequal as well as to get rid of unevenness of the paper and its jamming by making a paper conveying paddle rockable, and attaching a leveling disk which keeps the paper conveying force of this paddle constant, to a driven pulley CONSTITUTION:A paper conveying paddle 1 attached to a driven shaft 2 is connected to a driving shaft 6 via a driven pulley 3, a round belt 4 and a driving pulley 5, and since the driving shaft 6 is attached to an electric motor 9 via a pulley 7 and a belt 8, rotation of this motor 9 is transmitted to the paddle 1 This paddle 1 is rockably attached to the driving shaft 6 centering on the shaft center A leveling disk 13, keeping conveying force of the paddle 1 constant, is attached to the driven shaft 2, making it contact with the top of paper 11 at all times by means of a spring 15 Even if the stacking height of the paper 11 is ununiformed on a cradle 10, the conveying paddle 1 comes into contact with the paper 11 at all times, through which an amount of paper contact of the paddle 1 can be kept constant

Stable floating support for swimming paddle

Abstract: The subject of the invention is a float, the shape of which, respecting hydrodynamics, ensures the stability of the paddle which is added thereto The paddle, balanced perpendicularly to the water surface, and which is flexible in its central part, responds to all the propulsion movements made by the swimmer, with great sensitivity The movement of this assembly (float/paddle) with adjustable amplitude, combined with a webbing of the swimmer's lower limbs, performs well over long distances This assembly gives reassurance and steadies the swimmer owing to the capacity of its non-submersible support and the constant signalling of the latter (maritime code appearing on each paddle) When dismantled, its overall size remains extremely small, and is thus practical