1447 results about "Spoke" patented technology

A selectively coupleable and remotely actuateable surgical attachment for use with an electromechanical driver device for use in expanding occluded vessels and lumens. The attachment includes an axial rod which is coupleable to the electromechanical driver device, and which is selectively rotateable in accordance with the action of the electromechanical driver device. The rod is also threaded in opposing orientations at either end thereof. A pair of nuts are mounted to the rod, and specifically on the opposing threads. The rod and nuts are disposed within an axial track which permits the rod to turn, but constrains the rotational motion of the nuts, thereby permitting the nuts to move axially along the threadings of the rod when the rod turns. Attached to the nuts are a series of jointed spokes which are coupled to a flexible tubular shroud which surrounds the entire assembly. The jointed spokes are radially extended and retracted in accordance with the motion of the nuts in an umbrella-like fashion in accordance with the actuation of the electromechanical driver device. The radial expansion of the flexible tubular shroud provides the necessary force to expand an occluded vessel or lumen.

Disclosed is a valve implanting device comprising a collapsible frame, inner and outer guide wires removably connected to the collapsible frame, and a plurality of valve flaps attached to the collapsible frame. The collapsible frame is inserted into a patient's femoral vein or artery, guided to a deployment position using the guide wires, expanded using the guide wires, and stabilized using the guide wires to manipulate fixating hubs on the collapsible frame. The collapsible frame includes a central hub, a plurality of spokes, fixating hubs, gripping members, and a plurality of valve flaps.

An aneurysm neck cover is disclosed for use in occluding the flow of blood within an aneurysm. The aneurysm neck cover includes a first and second expandable sealing member having a circular joining member and reinforcing spokes which give the sealing members a slightly cupped configuration. The expandable sealing members are connected with a support element. When the aneurysm neck cover is deployed within the aneurysm, the first sealing member expands within the aneurysm while the second sealing member expands within an adjacent blood vessel thereby forming a seal around the mouth of the aneurysm and preventing the flow of blood within the aneurysm.

A torsional vibration damper having a hub carrying a radially projecting flange and an annular inertia mass defining an annular channel encompassing the radially projecting flange and an elastomeric member. An annular compression ring is attached to the opening of the annular channel to axially compress and extrude the elastomeric member to fill the annular channel around the radial flange within the inertia ring. Projections defining an intermittent annular inner rim of the inertia mass extend through openings between the spokes of the hub and cooperate with an annular outer rim of the inertia mass to retain the compression ring.

A self-propelled battery-powered wheelchair replaces an ordinary wheelchair and provides improved access to homes. The wheelchair includes stair climbing, slope climbing, and reclining while requiring only minimal driver skill and strength. Operation on level ground is similar to the operation of a conventional wheelchair. Support for normal operation is provided by a rear caster and wheels on the front corners. Its compact width and length enable negotiating narrow doorways and turning in small spaces. To ensure stability on stairs, moveable skids are mounted to the four corners of the wheelchair. Parallelogram linkages move the front skids down and forward during climbing. Another parallelogram linkage moves the caster and rear skids up and at an angle during climbing. The wheelchair is steerable on stairs as needed to align with the stair path and accommodate slightly spiraling stairs. The wheelchair accommodates stair steps of different riser heights and tread lengths. A pair of spoked or spider wheels with small wheels at the ends of the spokes are rotably mounted to the sides of the wheelchair. The spider wheels engage the stairs to propel and stabilize the wheelchair during climbing of stairs. Methods are provided to monitor and control the pitch attitude of the wheelchair and nearness of wheelchair supporting components to the stairs. Motion and control are provided by electric motors, sensors, a computer, and driver inputs. Propulsion power for conventional level operation, slope climbing, and stair climbing operation is transmitted through the same motors and wheels.

A mid turbine frame of a gas turbine engine includes an outer case which supports a spoke casing co-axially positioned therein. The spoke casing has load transfer spokes extending radially from an inner case and secured to the outer case. A load transfer device is provided to transfer load from the spokes to the outer case in addition to load transfer through a first group of fasteners securing the spokes to the outer case, thereby forming a secondary load transfer path from the spokes. The load transfer device includes an opening of the outer case into which at least some of the spokes are inserted.

Deployment of a hub-and-spoke (HaSP) topology virtual private network (VPN) may be facilitated by implementing a bi-directional VRF on a hub PE and using the hub PE as a hub-reflector. Route distinguishers and route targets may be used to differentiate traffic originating on the spokes from traffic originating on the hub. Using a bi-directional VRF allows a HaSP VPN to be created using a single link between the hub CE and hub PE. Allowing the hub CE to control spoke route distribution, and differentiating the direction of the flow by route target and route designator, enables the hub to control traffic between the spokes. Configuring the hub PE as a route reflector allows communication between the spokes to take place without having the CE hub inspect every piece of traffic. Optionally, other services may be provided by the hub PE as well, such as NAT, firewall, and AAA services.

A gas turbine engine mid turbine frame having an inner case supporting at least one bearing and at least three spokes extending radially outwardly to an outer case, the mid turbine frame having an interturbine duct extending through the mid turbine frame, the interturbine duct spaced axially closer to an upstream turbine disc than a bearing supporting structure of the mid turbine frame and mounted axially slidingly relative to the bearing supporting structure to substantially isolate the bearing supporting structure from axial loads, for example such as disc loads incurred in the unlikely event a turbine disc shaft shears within the engine.

A tire assembly with integrated power generation features includes one or more piezoelectric devices configured to generate electric charge therein upon being subjected to mechanical strains associated with flexure of tire or wheel components. The piezoelectric device may be incorporated in a variety of tire structures and in many different locations. In pneumatic tire structures, the piezoelectric device and related electronics may be embedded in crown or sidewall locations among such selected components as the exterior tread portion, first and second steel belts of a belt package, carcass, cap ply portion, inner liner, zone base, etc. The piezoelectric device with optional rubber casing may also be attached to such locations as the inner liner and tire exterior. Piezoelectric devices may also be integrated with a tire and safety support combination that is configured to operate in an extended mobility mode when the tire structure loses air pressure. Piezoelectric devices may alternatively be integrated with a non-pneumatic structurally supported tire such as one including a reinforced annular band, a plurality of web spokes extending transversely across and radially inward from the annular band, a mounting band at the inner end of the web spokes and a tread portion disposed on the annular band.

A pre-chamber spark plug that includes a shell. Additionally, the pre-chamber spark plug includes an insulator disposed within the shell. In a particular embodiment, a center electrode has a first portion surrounded by the insulator, and a second portion that extends from the insulator into a pre-chamber. The pre-chamber defined by the shell. In a further embodiment, a ground electrode is attached to the insulator. In particular embodiments, the ground electrode is tubular in shape and includes an inner spark surface ring spaced in surrounding relation to the center electrode to create a spark gap, an outer ring attached to the shell, and a plurality of rounded spokes connecting the inner and outer rings. In a particular embodiment, the ground and center electrodes accommodate attachment of precious metal alloys to increase electrode surface life. In another embodiment the ground electrode and insulator is coaxial to the center electrode.

The invention is directed to providing pseudowire tunnel redundancy for VPLS and VLL services in the form of automatic protection switching of the service from a primary pseudowire tunnel to a backup pseudowire tunnel upon detection of a failure affecting the primary pseudowire tunnel. Embodiments of the invention monitor event notifications reported by a network management entity for an indication of a failure affecting the primary pseudowire tunnel; and responsive to detecting the indication, switch a service carried by the primary pseudowire tunnel to the backup pseudowire tunnel. Such event notifications include those corresponding to any of provider edge routers, interface ports, service access points, spokes, and tunnel endpoints that are related to operation of the primary pseudowire tunnel

A molded article comprises an outer interface element, an inner interface element, and a plurality of web spokes positioned therebetween. The common surfaces of the inner and outer interface elements and a pair of adjacent web spokes form a void space. The surface of at least a portion of an interface element common to one of the voids has an edge radius with a variation from a maximum radius at a circumferential location corresponding to a mid point between a pair of adjacent web spokes to a minimum radius at a circumferential location corresponding to the intersection of the interface element with the web spoke.

A method for assembling a gas turbine engine that includes providing a low-pressure turbine inner rotor that includes a first plurality of turbine blade rows configured to rotate in a first direction, providing a low-pressure turbine outer rotor that includes a second plurality of turbine blade rows configured to rotate in a second direction that is opposite the first direction, coupling a turbine mid-frame assembly including a plurality of spokes within the engine such that the spokes are spaced axially forward of the inner rotor, coupling a bearing between the turbine mid-frame assembly and the inner rotor such that the inner rotor is rotatably coupled to the turbine mid-frame, and adjusting the plurality of spokes to align the bearing in a radial direction.

A booster apparatus that is to be used with an autoloading handgun is provided. The proposed novel device utilizes a piston with five spokes which are secured against rotational movement by interfacing with five of ten indexing notches that are machined on the stopping flange of the booster housing. There are ten indexing notches provided which allows for ten positions of orientation for the silencer in relation to the bore of the host firearm. Unnecessary rotational movement is prevented by the indexing notches which are robust and secure the piston in place. This device when utilized with a handgun silencer will facilitate the proper semi automatic function of the host firearm.

A structure for a bicycle wheel includes at least two tubes for improving the stiffness, strength, aerodynamics and aesthetics of the wheel. The wheel may be designed as a rim type with traditional spokes, or as one piece wheel with attached spoke legs. Preferably, the tubes are separated at various locations to form apertures.

A gas turbine engine has an engine casing component, such as a mid turbine frame system, which may includes an outer case surrounding a spoke or strut casing. Load transfer spokes of the spoke casing extend between the outer case and an inner case of the spoke casing. A bearing housing supported by the engine casing may include a fuse arrangement for isolating bearing seizure loads from the engine casing. A seal arrangement may be provided to centralize the rotors after the fuse fails. The mid turbine frame may be provided to have a desired flexibility through the configuration of the casing and bearings in design.

A very large diameter turret for mooring a VLCC class FPSO vessel. A large diameter rail and wheel bearing system is disposed between a turret main deck and the hull of the vessel. The turret is designed for a flexibility to allow the turret main deck to conform to the sag or hog of the vessel so that excessive forces on the wheels of the bearing system are avoided. The turret's main deck, in a preferred embodiment, includes a center hub, an outer ring, and spokes between the hub and outer ring. A lower chain deck is preferably connected to the main deck by pillars or columns, or alternatively by riser tubes alone, or other structures that achieve the desired flexibility of the main deck.

A fuel injection nozzle has a cylindrical nozzle body having a cavity where fuel passes through. A plurality of hollow spokes, each having an aerofoil cross section, are provided around the nozzle body. Each hollow spoke has four fuel injection holes in total on both side surfaces, i.e., two fuel injection holes on each side surface, to inject the fuel, with a distance from the surface of the nozzle body. The inside of each hollow spoke is hollow. The hollow spoke injects the fuel sent to the hollow nozzle body, from the fuel injection holes through the inside of the hollow spoke.

A steering wheel for a motor vehicle is provided having a hub element, a steering wheel rim, at least one steering wheel spoke for attaching the steering wheel rim to the hub element and at least one activation device which is arranged on the hub element, the steering wheel rim or the steering wheel spoke for controlling and/or regulating an assembly of a motor vehicle. The activation device is preferably embodied as an optical reflection sensor device with a functional face. Such a sensor device operates without mechanically moving parts and during the service life of the steering wheel it is independent of general scratching and soiling of its functional faces. In addition, the functionality of the measurement of distances and/or speeds of the objects located above the functional faces of the sensor device permits further functions to be integrated without requiring further separate devices in order to do so.

An inflatable nasopharyngeal stent is disclosed along with a method of using same. The stent comprises a central tube having a lumen defining a central inner chamber. A plurality of inflatable spokes are disposed along the central tube. The spokes are in fluid communication with the inner chamber of the central tube and are preferably aligned in groupings along the central tube. The outer ends of the spokes connect to a rib. The un-inflated stent is inserted into the nasal passageway through a naris and positioned such that so that a portion of the device is proximal to an anatomic structure exhibiting undesirable inflammation, configuration, growth or motility. Once positioned, the stent is inflated. Upon inflation, the ribs and adjoining web members move outwardly from the central tube and press upon the tissues of the nasopharyngeal cavity. Spaces between the inflatable spokes permit the passage of air along the stent and maintain airway patency.

A platform wheeled apparatus that incorporates an intelligent wheel configuration for each wheel in which each wheel can dynamically change its radius to negotiate various obstacles. The intelligent wheel has a rotational hub and support disc that carries a series of arcuately spaced extendable, weight bearing radial spoke mechanisms that can be controllably extended and retracted in response to the anticipated terrain surface over which the wheel is to travel. The hub of the intelligent wheel carries a microcontroller for a set of obstacle proximity sensors, force and position sensors and an appropriate electrical power supply for operation of the spokes and control components.

A gas turbine engine has a casing component, such as a mid turbine frame system, which includes an outer case surrounding a spoke or strut casing. Load transfer spokes of the spoke casing are detachably connected to the outer case and radially extend between the outer case and an inner case of the spoke casing. A bearing housing is supported by the inner case of the spoke casing. An arrangement for radially centring the bearing within the outer case is provided, the arrangement including at least three radial locators mounted to the outer case.

In a pulley assembly, an annular joint member made of a high polymer material is disposed between an outer ring of a bearing and a light metal pulley. The joint member has a coefficient of thermal expansion larger than that of the pulley. The outer ring has a coefficient of thermal expansion smaller than that of the pulley. The pulley has an annular boss, an annular rim, and a plurality of spokes which have side faces each consisting of a surface parallel to an axial direction of the pulley. Front faces of the spokes are positioned on one identical imaginary surface of revolution, and rear faces of the spokes are also positioned on one identical imaginary surface of revolution.

The present invention relates to a cutting cutterhead of variable cutterhead type driving machine, belonging to the field of tunnel machery technology. It is formed from spoke type cutterhead, panel type box body cutterhead groups and bolts, in which the spoke type cutterhead and panel type box body cutterhead group are independent member respectively. Besides, said invention also provides their application method.

A power generating system for generating electricity from the kinetic energy of a wind flow. The power generating system includes a turbine assembly, and a generator assembly, and may be also provided with a main brake assembly, as well as an emergency brake assembly. The system includes a series of modular components which can be built and adjusted in a modular manner so as to alter the configuration of the system, and thus maximize a generation of electricity by the system, depending on the particular conditions of the wind flow. Other improvements reside in the mounting spokes and aerodynamic blades of the system, as well as in its main brake assembly.

In a turbofan gas turbine engine, a fan shaft is rotatably mounted and radially supported by a bearing in a bearing support structure supported from a fixed engine structure by radially frangible bolts and radially extending spokes. The radially inner ends of the radially extending spokes are mounted on a common member that engages the bearing support structure. The radially outer ends of the radially extending spokes are mounted on a fixed engine structure located radially outwardly of the bearing support structure. The radially extending spokes are held in tension and include a super elastic material to exert a radially inward restoring force on the bearing support structure, subsequent to any radial excursion of at least part of the fan shaft relative to an engine rotational axis (X) following any fracture of the frangible bolts.

The present invention provides a spoked wheel comprising:

a rim comprising a continuous series of circumferential sections each of which has opposed ends and is connected at each of its ends to an adjacent section by means of a hinge that allows the two adjacent sections to pivot with respect to each other substantially in the plane of the wheel;

a hub that rotates with the rim; and

a plurality of spokes extending between the hub and the rim and supporting the rim on the hub, each spoke having an end that is pivotally attached to the rim via a pivot.

At least one of the spokes is movable with respect to the hub in the plane of the wheel to change the angular spacing between adjacent spokes and alter the shape of the rim between a circular shape and a non-circular shape, preferably a flattened shape.

The wheel may also include a tubular tyre held on the rim and is primarily intended for use in connection with bicycles and wheelchairs.

A noise reducing booster insert of a sound suppressor coupled to a barrel of a firearm includes an elongate body, a plurality of gas vents, and a plurality of indexing spokes. The gas vents permit expanding gases from the firearm to fill a space about the body to thereby increase noise reduction without the need of modifying a baffle stack of the sound suppressor. The gas vents are angled such that the expanding gases force the booster insert to rotate into tighter threaded engagement with the barrel of the firearm.

A spoke type flexible mechanical arm based on rope driving comprises a base, an arm body mechanism, an end effector and three driving ropes. The arm body mechanism is formed by connecting a plurality of joint units in series, one end of the arm body mechanism is fixed to the base through a connecting disc, and the other end, namely the tail end, of the arm body mechanism is connected with the end effector. The three driving ropes are evenly distributed in the circumferential direction, one end of each rope is fixed to the tail end of the arm body mechanism, and the other end of the rope sequentially penetrates through rope passing holes of all the joint units to be connected to rollers of a motor in the base. Each joint unit comprises an outer frame connecting rack, an inner frame connecting rack, a sliding sleeve, a pull strip and corresponding clamp nuts, wherein the outer frame connecting rack and the inner frame connecting rack are connected through the pull strip, so that the spoke type joint unit is formed. The spoke type flexible mechanical arm based on rope driving has the advantages of being low in arm body weight, high in load and good in maneuverability, the flexibility of the flexible mechanical arm is guaranteed, and the using range of the flexible mechanical arm is expanded.

The present invention provides improved spoke edge geometry for a non-pneumatic or hybrid tire that is less prone to fatigue when used. The present invention also provides a way to manufacture such geometry in a mold, In particular the spoke edge geometry is provided with a reduced cross-section that reduces the bending stresses locally and allows a unique mold construction that changes the placement and orientation of potential flash and reduces other potential molding flaws when a liquid such as polyurethane is introduced into the cavity of the mold to form a spoke. This change results in a reduction in the possibility of a stress riser being found near the edge of the spoke, enhancing the durability of the tire.