56results about How to "Extended range of rotation" patented technology

The present invention relates to an endovascular prosthesis. The endovascular prosthesis comprises a first expandable portion expandable from a first, unexpanded state to a second, expanded state to urge the first expandable portion against a vascular lumen and a retractable leaf portion attached to the first expandable portion. The retractable leaf portion comprises at least one spine portion and a plurality of rib portions attached to the spine portion. In one preferred embodiment of the present endovascular prosthesis, the retractable leaf portion is configured such that a pair of ribs attached on opposite sides of a longitudinally straightened configuration of the spine portion in a plane of view normal to a central axis of the prosthesis defines a shape, in two dimensions, that is substantially non-circular. In another preferred embodiment of the present endovascular prosthesis, the retractable leaf portion is configured such that a pair of ribs attached on opposite sides of a longitudinally straightened configuration of the spine portion in a plane of view normal to a central axis of the prosthesis defines a shape, in two dimensions, through which one straight line can be translated from one side to the other side of the shape so as to traverse the shape only once at every point along the shape. The rib portions of the present endovascular prosthesis can be designed so as to provide an improved rotational range of proper placement of the prosthesis with respect to the opening of the aneurysm. In a preferred embodiment, the rotational range may be as much as 45° or more. There is also described a method for delivering an endovascular prosthesis to a bifurcated artery which can be accomplished using a single guidewire and a single delivery device.

The invention relates to a high-speed parallel robot with four degrees of freedom comprising four kinematic chains (1) articulated at one of their ends to a mobile platform (4) carrying the tool (5) and at their other end, through a rotational joint (2), to an actuador integral with a base plate (3). The mobile platform (4) is formed by four members (11), (11′), (12), (12′), linked together by means of articulated linkages (13), at least two of the members being parallel to each other, forming an articulated mobile platform with one degree of freedom in the plane of the mobile platform. The actuators are positioned with any orientation in the base plate (2) and preferably at 45°, 135°, 225° and 315°.

The aim of the invention is to provide a large-load gapless precise hook hinge. The hook hinge overcomes the disadvantages of a traditional two-DOF and three-DOF (degree of freedom) rotary hinge, that is, a hook hinge structure which is used in a six-DOF vibration isolation and positioning platform and adopts an angular contact bearing pretightening mode to remove the bearing clearance and achieve the effects of large bearing capacity and high precision. The hook hinge consists of four parts: an upper rotation body, an upper node fork, a cross axle component and a lower node fork. The upper rotation body and the upper node fork are movably connected together to form a first rotational degree of freedom. The upper node fork and the cross axle are movably connected together to form a second rotational degree of freedom. The cross axle and the lower node fork are movably connected together to form a third rotational degree of freedom. The large-load gapless precise hook hinge has the advantages of a compact structure, strong bearing capacity, high precision, a large rotational range of the hinge, long service time, convenient maintenance, etc. The large-load gapless precise hook hinge is suitable for the connection of other precise mechanisms besides a six-rod parallel positioning platform.

The present invention approaches the filling efficiency problem from the perspective of the block receptor sites independent of any modification to existing manufacturing equipment or general block geometry. The present invention teaches the use of receptor site openings consisting of various shapes to increase the filling efficiency by improving the ease with which a right-side-up block can deposit into a receptor site opening while preventing improperly oriented blocks from completely entering the block receptor site and enhancing the ease with which incorrectly seated and upside down blocks can be removed from the receptor site.

A hybrid powertrain includes a combustion engine operable to output rotational power thereat, an electric machine arrangement operable to output rotational power thereat, a gearbox arrangement for receiving rotational power from at least one of the combustion engine and the electric machine arrangement and being operable to couple motive power to a load coupled to the gearbox arrangement. The gearbox arrangement is operable to provide a plurality of gearing ratios. The electric machine arrangement is employable to extend a rotation rate range provided in a given gearing ratio: at higher rotation rates prior to a gear change from said given gearing ratio to a gearing ratio subsequent thereto; or at both lower rotation rates when accelerating from a standstill or from a preceding gear, and at higher rotation rates prior to a gear change from said given gearing ratio to a gearing ratio subsequent thereto.

The invention discloses a hyperbolic rod-type hollow flexible hinge, symmetrically cutting out left and right reels on the two opposite surfaces of a rectangular cube, cutting out vertical bar in the vertical center of the rectangular cube, cutting out horizontal bar in the horizontal center of the rectangular cube, and the vertical bar, the horizontal bar and the right reel form hollow regions A and C, the vertical bar, the horizontal bar and the left reel form hollow regions B and D; the left and right reels and the horizontal and vertical bars separate the rectangular cube into upper and lower link rods. And the invention adopts hollow design and converts the traditional notched flexible hinge into reel flexible hinge, thus enlarging its rotation range and reducing structural inner stress, and applied to large-travel intelligent control mechanisms.

A headrest structure and a headrest device, including a bottom plate provided at a lower face of a headrest, and provided with an elongated hole extending in a seat front-rear direction through which a stay is inserted, a guide sheet having the same width as that of the elongated hole, that is longer in length than the elongated hole, whose both end portions are slidably supported by the bottom plate, and that is provided with an elongated guide hole smaller than the elongated hole, a concealing sheet provided with an attachment hole to which the stay is attached, and that is overlapped slidably on an upper face of the guide sheet so as to cover the elongated guide hole, and a wall portion that is formed at the bottom plate, and that restricts movement of the guide sheet and the concealing sheet in a seat width direction, are provided.

The invention provides a redundant-drive three-shaft series-parallel rotary platform. The series-parallel rotary platform consists of a base platform (1), a central platform (2), an upper platform (5), four drive branches distributed around and a central limiting branch, wherein the central limiting branch is fixedly connected with the central platform (2) and is connected with the upper platform (5) by a fifth universal joint (U5); the central platform (2), the upper platform (5), the central limiting branch and the drive branches form a two-shaft parallel rotary platform with redundant drive; and the base platform (1) is connected in series with the two-shaft parallel rotary platform by a first rotation pair (R1) to form the redundant-drive three-shaft series-parallel rotary platform. The redundant-drive three-shaft series-parallel rotary platform has the characteristics of simple and symmetric structure, high loading capacity, small performance difference within work space and the like.

A rotor iron core is used, which is formed by laminating a base steel sheets with a magnetic flux density (B8000) of 1.65 T or more as measured at a magnetic field strength of 8000 A / m and a coercivity of 100 A / m or more.

The seat reclining apparatus includes first and second pawls supported by a base member to be movable in radial directions and to be engageable with an internal gear of a ratchet. In the unlocked range, a first pawl-restriction portion of the ratchet and a first limit portion of the first pawl, which are positioned on the radially outer side, radially face, and each pawl is prevented from engaging with the internal gear. In a specific range of the unlocked range, a second pawl-restriction portion of the ratchet and a second limit portion of the second pawl, which are positioned on the radially inner side, radially face. The second pawl-restriction portion or / and the second limit portion includes a pressing portion which moves the second pawl to a disengaged position when the second-pawl restriction portion and the second limit portion mutually contact in the rotational direction of the ratchet.

A seat driving device of a simulation system for driving a seat on which a user of the simulation system sits is provided. The seat driving device includes a first member having a spherical surface, a second member making a relative motion with respect to the first member, two wheels rotatably coupled to the second member and rolling on and contacting the spherical surface of the first member, and two driving motors installed on the second member and connected to the wheels to rotate the wheels. The seat is installed on one of the first and second members.

A throttle valve controller configured to control opening and closing of a throttle valve disposed in an air-intake passage of a throttle body coupled to an engine, including an input member that is rotatable in association with a rider's hand operation, a power transmission device with an input part thereof coupled to the input member, an output member that is coupled to an output part of the power transmission device and causes the throttle valve to rotate in association therewith, an actuator configured to drive the power transmission device to cause the output member to rotate relative to the input member to change a rotational ratio of the output member to the input member independently of the hand operation, and a movable stopper configured to change and restrict a rotational range of the input member in a closing direction of the throttle valve.

An XYZ three-freedom-degree precise positioning device comprises an XY motion base and a Z axis motion module; the Z axis motion module is mounted on the XY motion base, and the XY motion base comprises a base plate; displacement devices and a motion platform are arranged on the base plate, two displacement devices are located on the X axis and the Y axis correspondingly, and are flexible mechanisms with piezoelectric ceramics, and each displacement device comprises a left lever, a right lever, an input end mounting block and an output end mounting block, first containing grooves are formed in the base plate, the displacement devices are mounted in the first containing grooves, the lower ends of the left levers and the lower ends of the right levers are hinged to the lower groove walls of the first containing grooves through hinges, the input end mounting blocks are hinged to the lower portions of the right sides of the left levers and the lower portions of the left sides of the right levers through hinges, the output end mounting blocks are hinged to the upper portions of the right sides of the left levers and the upper portions of the left sides of the right levers through straight beam type flexible hinges, and the output end mounting blocks are mounted on the motion platform through the straight beam type flexible hinges.

A cultivation device capable of freely adjusting angles for gardens comprises a base. The upper part of the base is provided with a connecting rod and rotary seat; one side of the rotary seat is hinged to the base; a water supply pipe is installed on the rotary seat; a plurality of soilless cultivation tubes are installed on the water supply pipe in a line; the lower end of the connecting rod is hinged to the base; the upper end of the connecting rod is provided with a bearing. According to the invention, the angle of the rotary seat can be freely adjusted by the cooperation of a screw and a nut so that the plants on the soilless cultivation tubes can be exposed to the light with suitable angles and therefore the plant quality is greatly increased. Prolonging plates of the invention can prolong the screw and therefore the rotating range of the rotary seat is greatly enlarged.

A flexible pivot includes a first stage including a first cylinder and interface structure and a second stage including a second cylinder and interface structure in axial alignment with those of the first stage. Flexible connecting members are arranged for connecting the first and the second stages. Each flexible connecting member includes a pair of legs and a cross member joining the legs, each leg extending in a direction transverse to the axis of the cylinders, the legs being attached to the first and the second cylinders respectively. The first cylinder and the first interface structure are concentric. Flexible spokes are attached to the first cylinder by one end and to the first interface structure by the other. Each spoke extends in a direction transverse to the axis of the cylinders. Finally, the second stage includes flexible connection unit arranged to connect the second cylinder to the second interface structure.

A hydraulic excavator tool adapted to be secured to the distal working end of an excavator boom including a main tool assembly with a tool framework, a spaced apart pair of connection flanges fast with the tool framework, and, a structural tubular casing integral with the tool framework extending across and through the tool framework and through the flanges, plus a rotary hydraulic actuator within the tubular casing extending between the connection flanges and providing a rotational drive motion to a drive axle extending between the connection flanges adapted to provide a controlled rotary drive motion of the axle adjacent the connection flanges, and a working tool framework fast to the axle adjacent each of the connection flanges for relative controlled rotation of the working tool framework about the drive axle between the tool framework and a working position.

The invention discloses a novel all-dimensional twisting energy dissipation damping supporting seat. The novel all-dimensional twisting energy dissipation damping supporting seat includes a base and atop seat, the base is provided with at least three energy dissipation supporting columns, the energy dissipation supporting columns are provided with limiting parts which are connected with the base,and the energy dissipation supporting columns are connected with connecting parts which are rotatably provided with sliding blocks in a connecting mode; each of the sliding blocks is suitably matchedwith a corresponding sliding groove, the sliding grooves are connected at the lower surface of the top base, and the sliding blocks can slide in correspondence with corresponding sliding grooves; andthe sliding grooves are located at the same plane, at least two sliding grooves are not mutually parallel, and the energy dissipation supporting columns are mild steel members. According to the novelall-dimensional twisting energy dissipation damping supporting seat, the principle of a traditional supporting seat energy dissipation due to friction can be broken, deformation capability of materials can be fully played, earthquake kinetic energy amount can be effectively consumed, the blindness and the directionality in present designing and installing process can be avoided, the energy dissipation effect of the supporting seat is improved, and the entire anti-quake performance and safety of a structure can be improved.

The invention belongs to the technical field of solar energy, and particularly discloses a horizontal rotating mechanism and a heliostat system. The horizontal rotating mechanism comprises a fixing seat, a rotary seat, a rotary disc, a first rotary arm, a second rotary arm, a horizontal driving assembly; the rotary seat is connected with the fixing seat in a pin joint mode; the rotary disc is arranged above the rotary seat, and is fixedly connected with the rotary seat; the first rotary arm is arranged on one side of the rotary seat, and one end of the first rotary arm is connected with the rotary disc in a pin joint mode; the second rotary arm is arranged on the other side of the rotary seat, one end of the second rotary arm is connected with the other end of the first rotary arm in a pinjoint mode, and the other end of the second rotary arm is connected with the fixing base in a pin joint mode; and the horizontal driving assembly comprises a push rod and a push rod driving assemblywhich are connected with each other, the push rod driving assembly drives the push rod to move in the axial direction of the push rod, one end of the push rod is connected with the push rod driving assembly, the other end of the push rod is connected with the first rotary arm, and the push rod driving assembly is connected with the fixing seat in a pin joint mode. According to the horizontal rotating mechanism and the heliostat system, the horizontal rotating range can be expanded, and the horizontal rotating stability can be improved.

A throttle valve controller configured to control opening and closing of a throttle valve disposed in an air-intake passage of a throttle body coupled to an engine, including an input member that is rotatable in association with a rider's hand operation, a power transmission device with an input part thereof coupled to the input member, an output member that is coupled to an output part of the power transmission device and causes the throttle valve to rotate in association therewith, an actuator configured to drive the power transmission device to cause the output member to rotate relative to the input member to change a rotational ratio of the output member to the input member independently of the hand operation, and a movable stopper configured to change and restrict a rotational range of the input member in a closing direction of the throttle valve.

The invention provides an illuminating lamp for stage performance and relates to the field of stage performance props. The illuminating lamp for stage performance comprises a base. A rotary device isarranged at the bottom of the base. A rotary shaft is fixedly installed at the bottom of the inner wall of the rotary device. The outer surface of the rotary shaft is fixedly sleeved with two holdingblocks. A bevel gear is movably installed at the top of the rotary shaft and located at the top of the holding block on the upper side of the rotary shaft. A movable plate is movably connected to theouter surface of the rotary shaft and located at the top of the holding block on the lower side of the rotary shaft in a sleeving mode. A clamping block is fixedly installed on the left side of the top of the movable plate. According to the illuminating lamp for stage performance, a first motor drives a cylinder to do circular motion, thus the movable plate rotates front and back, a barb of the clamping block hooks the bevel gear to rotate, a rotation purpose is achieved, thus the illuminating lamp can rotate horizontally, practicability of the illuminating lamp for stage performance is improved, and much convenience is brought to people.

The invention discloses a modified starch reaction kettle which comprises a kettle body. A heat insulation layer is installed on the outer side wall of the kettle body, the side wall of the heat insulation layer is sleeved with an installing sleeve, multiple supporting legs are symmetrically welded on the installing sleeve, a feeding pipe is communicated to the kettle body, a temperature measuringprobe is plugged into the kettle body, the lower end of the kettle body is communicated with a discharging pipe, a first valve is installed on the discharging pipe, a gear box is installed at the upper end of the kettle body, two rotary shafts are symmetrically installed in the gear box, the lower end of each rotary shaft extends into the kettle body and is fixedly connected with a cam, a stirring shaft is fixedly connected to the cam, a motor is installed on the upper surface of the gear box, an output shaft of the motor extends into the gear box and is provided with a driving wheel, and twofilter plates are symmetrically and rotatably connected in the kettle body. The modified starch reaction kettle is ingenious in structure, convenient and quick to use, uniform in stirring and capableof filtering solid precipitates and can be flushed without filter plate dismounting.

The present invention provides a multi-degree-of-freedom large-tolerance circular self-floating connector. The connector comprises a floating plug and a fixed socket which can be in butt joint with each other, the floating plug comprises a plug shell, a clamping ring, a check ring, a floating sleeve and a floating shell, the outer ring of the plug shell is sleeved with the floating sleeve, the floating sleeve is slidably installed in an inner cavity of the floating shell, and one end of the floating shell is provided with the check ring; a corrugated spring is arranged between the floating sleeve and the baffle ring, the check ring is fixedly installed at the other end of the floating shell through a clamping ring, a flange plate is arranged on the outer ring of the plug shell, the flangeplate is limited between the check ring and the floating sleeve, and the floating sleeve abuts against the flange plate under the elastic action of the corrugated spring. According to the multi-degree-of-freedom large-tolerance circular self-floating connector provided by the invention, the floating tolerance range is expanded through structural and elastic force setting optimization, and the requirement of rapid development of a space docking technology is met.