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178results about How to "Eliminate play" patented technology

Multiple generator wind turbine

A multiple generator wind turbine employs a single blade arrangement to drive multiple generators. The multiple generators are preferably substantially tubular and can all be mounted on one side of the turbine support structure or can be divided, preferably symmetrically, on opposite sides of the support structure. Preferably, a single drive blade arrangement drives a rotor of a first generator and a shaft connects the first generator to a rotor of a second generator. Additionally, a clutch can be placed in the drive train between two generators to allow turbine operation at lower speeds. The substantially tubular nature of the turbine allows easy access by humans to the interior of the wind turbine and provides ready air flow through the wind turbine to the hub and blades for cooling of equipment therein and / or deicing of the blades.
Owner:WILIC SARL

Woodworking machinery stop and track system

A woodworking machinery jig and fixture system has a stop with a half-dovetail surface and can be provided with one or more T-slots. The half-dovetail surface can be clamped against a half-dovetail surface on the support, or against a flat surface. In one of the stops, the base has multiple through holes, any one of which can be used to mount a flip stop arm so as to vary the height of the arm or use a zero clearance fence. A track for the system has a flange that helps locate the track along the rear corner of a wood fence and also helps secure the track to the wood fence with fasteners through holes that can be drilled in the flange using a drill guide groove formed in the flange. Tension screws are provided in the stop and in the base for eliminating play between the hinge pin, the flip stop and the base. A lens is received in a groove of the stop arm and extends therefrom in position to view a ruler that is mounted on top of the support, facing up. The projection on the bottom of the base that fits into a T-slot is bordered by an angled surface that cams against the corner of the T-slot to push the other edge of the projection against the other corner of the T-slot when the base is assembled to the track, to provide a snug fit between the base and the track. The stops are provided with accessory mounting slots. A fixed stop with a half-dovetail surface, lens groove and accessory mounting slots can be mounted to a standard 2×4 that has a mating half-dovetail surface or a flat surface. A miter fixture can be mounted to the accessory slots that has fingers with ends that provide surface support of the mitered end of a workpiece whether the workpiece is supported with its point toward or away from the working plane of the support.
Owner:KREG ENTERPRISES

Industrial Robot

An industrial robot including a drive package with a motor and a gear between an output shaft of the motor and a third shaft of the robot in immediate proximity to the third shaft for rotation of an upper arm of the robot relative to a lower arm. The gear is a multistage gear transmission with parallel gear-wheel axes and one of the gear wheels of the gear is secured to the third shaft.
Owner:ABB (SCHWEIZ) AG

Electric power steering device

An electric power steering device includes a worm which is swingably connected to the rotation shaft of an electric motor through a joint. A first end portion and second end portion of the worm are supported by a first bearing and a second bearing, respectively. A pair of elastic members elastically urge the worm to an axial neutral position. An annular leaf spring which is held by a housing urges the second end portion toward a worm wheel through the second bearing. A synthetic resin member having a sliding contact surface which is in contact with the leaf spring is integrally disposed on the second bearing.
Owner:JTEKT CORP

Transmission for motorized track system

A track system (18) of the type used to adjust the position a supported element such as vehicular seat (12) includes a pair of base rails (20) that slidably interact with a respective pair of driven rails (22). A transverse rail (24) is attached to each of the driven rails (22) so that the driven rails (22) slide together as a unit. A motor (34) is supported on the transverse rail (24) and includes a pair of drive shafts (36) emanating from either end. The drive shafts (36) carry on their distal ends' respective worm gears (38) which are contained within a transmission assembly (26). The worm gears (38) mesh with external teeth on respective drive nuts (54) which interact with a lead screw (28) that can be oriented to either remain stationary relative to the base rails (20) or can be rotatably fixed within the driven rails (22). The drive nut (54) is prevented from causing objectionable noise and premature wear in operation by the inclusion of one or two compressible washers (66).
Owner:ADIENT LUXEMBOURG HLDG SARL

Electronically controlled tow hitch assembly

InactiveUS20100109286A1Safety easeEase of operation of towTowing devicesEngineeringBiological activation
An electronically controlled tow hitch assembly for a vehicle is provided which has a controller for locking and unlocking the assembly. The assembly has a locking unit with a receiving aperture into which a connector attached to a flange for holding a load or trailer is inserted. The locking unit has a locking shaft that extends through the aperture of the unit and passes through a groove in the wall of the aperture and an aligned groove in the connector for locking. An electric motor with a reduction gearbox is utilized to lock and unlock the connector from the locking unit. A spring loaded safety pin is used for locking the locking shaft with the tip of the safety pin entering the aperture and locking the locking shaft in position. The locking unit has an activation switch that determines when the connector has been fully inserted into the unit. The controller will only control the motor to lock the locking shaft when activated by the activation switch. A roller switch is provided to determine when the safety pin has been removed from the locking shaft and conveys the information to the controller which may not allow the motor to unlock the locking shaft unless the safety pin has been held out for a specified length of time. The controller measures the rotation of the locking shaft during locking, the amperage being drawn by the electric motor and the time for locking and uses these factors to determine whether the locking has been satisfactory or not. If not, the controller will reverse the motor which will unlock the connector.
Owner:VISSER DIRK

Interlocking IM nails with outer screw

This invention is a mechanism and design that uses headless screws that interlock with the Intramedullary Nail. Canulated outer screws engage the threads of the headless screws and further locks into the Intramedullary Nail. A sleeve on the outer end of the headless screw will aid in centering of the IM Nail. This process may be repeated contra laterally for optimal fixation and centering of the IM Nail when allowed by the anatomy. This mechanism ensures no play in the screw-nail interface which is inherent in current interlocking designs.
Owner:SEMET ELLIOT CHARLES

Adjustable shuttle stop apparatus

A adjustable shuttle stop apparatus for use in controlling feeding of material to a machining operation on a machine tool, such as a band saw. The apparatus comprises a feed conveyor, a band saw adjacent to the feed conveyor, a shuttle vise movably disposed on the feed conveyor, and an adjustable stop on the feed conveyor for adjusting a distance between the stop and the shuttle vise and for stopping the shuttle vise at the cutting position. The adjustable stop compensates for undesired movement of the shuttle vise caused by clamping the workpiece such that the distance between the stop and the shuttle vise remains substantially constant. This allows for a consistent cut length of the workpiece on subsequent cutting cycles. Different embodiments of the adjustable stop are disclosed along with a method of use of the apparatus.
Owner:HEM

Automatic transmission controller for hybrid vehicle

An automatic transmission controller for a hybrid vehicle of the present invention is used for the hybrid vehicle being a four-wheel drive vehicle and including an engine and a generator motor on a front wheel side of the hybrid vehicle and a traction motor on a rear wheel side of the hybrid vehicle. The automatic transmission controller for a hybrid vehicle includes: an automatic transmission for transmitting a driving force from the engine to an output shaft of the hybrid vehicle; and an oil pump for supplying a speed-shifting clutch of the automatic transmission with pre-pressure to eliminate play of the speed-shifting clutch, when the hybrid vehicle is driven by a driving force from the traction motor.
Owner:HONDA MOTOR CO LTD

Molded washer assembly

InactiveUS20060182518A1Uniform radial compressionUniform compressionWashersEngineeringRadial compression
A washer formed by two identical C-shaped sections having parallel upper and lower surfaces, two ends, an inside and an outside arcuate edge, the ends having a plurality of tabs and recesses that inter-digitate to form continuous surfaces. The outside arcuate edges have a circumferentially extending groove adapted to receive a circumferentially disposed tension member to apply a substantially uniform radial compression on the washer slot during assembly. The tension member can be molded into the groove to form a single unitary structure with the remainder of the washer.
Owner:UNDERWOOD J LARRY +1

Chamber insert lock installed within an ar-15/16 barrel extension for locating and reducing movement of an associated sub caliber action

The present invention teaches an insert locking mechanism incorporated into a sub caliber action device, installable within an upper receiver of an AR-15 type firearm, and which interfaces with an upper receiver mounted forward assist for use with such as .22 caliber ammunition and in order to eliminate movement or play of the chamber insert adaptor associated with the substituted sub caliber action. The mechanism includes a generally cylindrical shaped body supported upon the action and exhibiting a plurality of radially projecting and circumferentially extending lugs which are configured to mate and seat within a plurality of grooves circumferentially arrayed within a barrel defined in the upper receiver.
Owner:22 EVOLUTION

Large holesaw mandrel assembly

A holesaw mandrel has a mandrel body with at least one bore, a pilot drill bit bore, and a first end coupled with the body. The first end is coupled with a driver. A second end extends from the body and includes a threaded spud. A sliding collar is axially movable on the mandrel body. The sliding collar includes at least one pin extending the bore in the mandrel body. A resilient member is positioned adjacent the threaded member to provide enhanced securement of the holesaw. The sliding collar is magnetized to prevent withdrawal of the pin from the holesaw. A positioning member is in the pilot drill bore to provide a desired orientation of the pilot drill bit.
Owner:BLACK & DECKER INC

Nut

A nut having a nut body, a spring case, a washer, and a nut body urging spring. The nut body has received in it at least three or more nut segments and a nut segment urging spring, where the nut segments are, when rotated in the tightening direction after a bolt is inserted into the nut segments, screwed on to the thread of the bolt inserted. The spring case is attached at its upper end to the outer circumferential surface other than the upper part of the nut body so that the spring case is rotatable together with the nut body. The washer is rotatably attached to the lower part of the spring case. The urging spring is installed such that its one end received in the spring case is connected to the spring case or to the nut body and the other end to the washer, so that the urging spring can constantly urge the nut body in the tightening direction when the nut body is screwed on the bolt. When the nut is fitted on the bolt and rotated in the tightening direction, at least the three or more nut segments are screwed on to the thread of the bolt, causing the nut body in which the nut segments are received to be constantly urged in the tightening direction, which eliminates play of the nut segments to keep the nut and the bolt in a state where they are reliably screwed to each other.
Owner:TANEICHI KAORU

Date-display chronometer comprising time-difference operation device

The present invention concerns a timepiece such as, in particular, a wristwatch, including a watch movement, a running equation of time device, as well as a date mechanism, this timepiece having a pair of hour (22) and minute (24) hands which indicate the civil time, and an additional minute hand (28) which indicates the true time, the daily position of the true time minute hand (28) with respect to the civil time minute hand (24) being determined by the position of an equation of time cam (32) driven in rotation at the rate of one revolution per year by a date mechanism, characterized in that the true time minute hand (28) is driven by a differential gear (50) which has for respective power take-off a gear train (52) driving the civil time minute hand (24) and a transmission member which co-operates with the equation of time cam (32) to transmit the pivoting movement of said cam (32) to the input of the differential gear.
Owner:FREDERIC PIGUET

Three-supporting surface prestress blocking seat mechanism of converter

The invention belongs to the technical field of metallurgical machinery and discloses a three-supporting surface prestress blocking seat mechanism of a converter. The three-supporting surface prestress blocking seat mechanism of the converter mainly comprises a supporting ring, a converter shell, supporting ring blocking seats and a converter shell seat assembly, wherein the supporting ring blocking seats are welded on the supporting ring, the converter shell seat is welded on the converter shell, the upper parts of the supporting ring blocking seats of both sides are connected by a pretensionpull rod and a linking member and are pretensioned inwards, the converter shell seat is clamped between the supporting ring blocking seats, the converter shell seat and the supporting ring blocking seats are provided with two lateral contact supporting surfaces, a longitudinal contact cushion block is additionally arranged between the supporting ring and the converter shell seat, and a longitudinal contact supporting surface is arranged between the supporting ring and the converter shell seat. The three-supporting surface prestress blocking seat mechanism effectively restricts a lateral gap and longitudinal elastic displacement of a converter body in the supporting ring, increases the operation stability of the converter, prolongs the service life, improves the reliability of the converter and is a novel technology with a popularization value on the converter.
Owner:CISDI ENG CO LTD

Bicycle rack for a vehicle bed

Method and arrangement for providing a bicycle transport system that includes a rack assembly securing a bicycle, with both wheels still attached, in the bed of a pickup truck without requiring physical modification of the pickup truck bed. The transport system includes a rack frame having a securing assembly releasably securing the rack frame in the bed of a transporting pickup truck. The system also includes a bicycle restraining portion that is maintained in abutting engagement with a front tire of a bicycle being transported in the pickup truck bed. The securing assembly has an anchor member that in a secured configuration maintains the rack frame in abutment with the pickup truck bed so that the rack frame is substantially fixing relative to the truck bed. The bicycle restraining portion has a constrictable arm that presses upon the front tire of the bicycle in a transporting configuration. The arm exerts a compression force, obliquely directed with respect to both horizontal and vertical, upon the bicycle front tire in such a manner that the tire is compressed into a substantially fixed position above the truck bed when in the bicycle transporting configuration.
Owner:THULE SWEDEN AB +1

Triaxial modularized dry type vacuum pump

The invention discloses a triaxial modularized dry type vacuum pump. The triaxial modularized dry type vacuum pump comprises a pump body, wherein a multistage pump cavity is arranged in the pump body; a suction end opening is formed in one side of the pump cavity at each stage; an exhaust end opening is formed in the other side of the pump cavity at each stage; the exhaust end opening of the adjacent front-stage pump cavity communicates with the suction end opening of the adjacent rear-stage pump cavity; a middle pump shaft, a first side pump shaft and a second side pump shaft which are parallel are arranged in the pump cavity at each stage; each pump shaft of the adjacent front-stage pump cavity is in one-to-one correspondence with each pump shaft of the adjacent rear-stage pump cavity; the three pump shafts of the pump cavity at each stage rotate at the same speed, and the first side pump shaft and the second side pump shaft are reverse in rotation direction; paired rotors are arranged in the pump cavity at each stage; paired rotors of pump cavities at odd stages are separately connected on the middle pump shafts and the first side pump shafts; and paired rotors of pump cavities at even stages are separately connected on the middle pump shafts and the second side pump shafts. According to the triaxial modularized dry type vacuum pump disclosed by the invention, gas circulates from the front-stage vacuum cavity to the rear-stage vacuum cavity to realize down-flow without bending, so that the dead corner that gas is discontinuous is completely solved.
Owner:ELIVAC COMPANY

Bicycle pedal and crank apparatus

InactiveUS20050204860A1Improved contamination protectionEliminate playControlling membersMechanical apparatusBall bearingEngineering
A pedal with a shaft fixed to the pedal body instead of a spindle that turns relative to the pedal body. The shaft is fixed relative to the pedal body. The pedal shaft rotates relative to the crank arm instead. A sealed cartridge ball bearing is mounted to the end of a crank arm and held in position by a retainer. The shaft is fitted through the sealed cartridge ball bearing of the crank arm and a screw secures the shaft in position. This changes the pedal to crank interface. The pedal does not require bearings or bushings or seals as with prior art pedals, because the shaft rotates within the sealed cartridge bearing held within the crank arm. The shaft and pedal body can be combined to create an even simpler pedal.
Owner:CRANK BROS INC

Haptic feedback system and method

A haptic feedback system includes movable and static portions coupled by one or more magnetic fields that serve to retard movement of the movable portion with respect to the static portion so as to provide haptic feedback when the movable portion is moved relative to the static portion. A magnet associated with one of the movable and static portions reacts with structure associated with the other of the movable and static portions so as to provide haptic feedback when the movable portion is moved with respect to the static portion.
Owner:TOUCHSENSOR TECH

Fixed type constant velocity universal joint

A fixed type constant velocity universal joint comprising an outer joint member (1) having eight arcuate guide grooves (1b) extending in the axial direction in an inner spherical surface (1a), an inner joint member (2) having eight arcuate guide grooves (2b) extending in the axial direction in an outer spherical surface (2a), eight balls (3) disposed between the guide grooves (1b) of the outer joint member (1) and guide grooves (2b) of the inner joint member (2), and a cage (4) interposed between the outer and inner joint members (1) and (2) for retaining the balls (3), in which center (P) of guide grooves (1b) of the outer joint member (1) is offset from center (O) of inner spherical surface (1a), and center (Q) of guide grooves (2b) of the inner joint member (2) is offset from center (O) of outer spherical surface (2a) by equal distance (PO=QO=F) to opposite sides in the axial direction, and the relation of 0.45≦B / A≦0.65 is established, where A stands for the wall thickness of the cage (4), and B the radial displacement of balls 3 at maximum joint angle.
Owner:NTN CORP

Rigid skull fixation

The invention relates to a stabilizing device adapted to be applied to a stereotactic frame (2, 3), which is provided with fixation pins (4) to allow fixation of the stereotactic frame to a bone (5) of a human or animal body part to be examined or treated, wherein the stabilizing device is adapted to stabilize a fixation pin in relation to the frame. The stabilizing device comprises a stabilizing member (9) which in a first position is provided with a through opening (13), adapted to be applied over the fixation pin in an area between the frame and the body part, and a tensioning member (10) positioned in a second position on a distance from the through opening and being capable of drawing the stabilizing member towards the frame. The stabilizing member is formed with a stop member (12), which is adapted, when tightening the tensioning member, to prevent displacement of the first position of the stabilizing member along the fixation pin towards the frame, while allowing displacement of the second position of the stabilizing member towards the frame, such that the fixation pin will be drawn or bent in a direction towards the second position.
Owner:ELEKTA AB

Nut

A nut having a nut body, a spring case, a washer, and a nut body urging spring. The nut body has received in it at least three or more nut segments and a nut segment urging spring, where the nut segments are, when rotated in the tightening direction after a bolt is inserted into the nut segments, screwed on to the thread of the bolt inserted. The spring case is attached at its upper end to the outer circumferential surface other than the upper part of the nut body so that the spring case is rotatable together with the nut body. The washer is rotatably attached to the lower part of the spring case. The urging spring is installed such that its one end received in the spring case is connected to the spring case or to the nut body and the other end to the washer, so that the urging spring can constantly urge the nut body in the tightening direction when the nut body is screwed on the bolt. When the nut is fitted on the bolt and rotated in the tightening direction, at least the three or more nut segments are screwed on to the thread of the bolt, causing the nut body in which the nut segments are received to be constantly urged in the tightening direction, which eliminates play of the nut segments to keep the nut and the bolt in a state where they are reliably screwed to each other.
Owner:TANEICHI KAORU
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