357 results about "Curved beam" patented technology

Precision-folded, high strength, fatigue-resistant structures and a sheet therefore are disclosed. To form the structures, methods for precision bending of a sheet of material along a bend line and a sheet of material formed with bending strap-defining structures, such as slits or grooves, are disclosed. Methods include steps of designing and then separately forming longitudinally extending slits or grooves through the sheet of material in axially spaced relation to produce precise bending of the sheet when bent along the bend line. The bending straps have a configuration and orientation which increases their strength and fatigue resistance, and most preferably slits or arcs are used which causes edges to be engaged and supported on faces of the sheet material on opposite sides of the slits or arcs. The edge-to-face contact produces bending along a virtual fulcrum position in superimposed relation to the bend line. Several slit embodiments suitable for producing edge-to-face engagement support and precise bending are disclosed. With these teachings, forming numerous three-dimensional load-bearing structures from a two dimensional sheet are enabled. Examples of straight and curved beams, chassis, and exoskeletons are disclosed.

A cardiac valve repair device has a membrane assembly and a frame. The frame has a central structure that defines a central separation, a pair of sleeves positioned below the central structure, and a pair of atrial alignment expansion beams. Each atrial alignment expansion beam has a curved section and inner section at each opposite end that defines a scissor-crossing where they overlap each other to form a separate lower expansion clip beam at each of the opposite ends thereof. The cardiac valve repair device also includes a pair of upper expansion clip beams. A V-shaped ventricular expansion curved beam extends below the two sleeves, with the membrane assembly secured to the V-shaped ventricular expansion curved beam. A pair of ventricular alignment stabilizing beams extends downwardly from the two sleeves.

A beam-type wiper blade reclosable package that includes a pair of package halves joined by an elongate compliant joint that preferably enables one of the package halves to function as a cover that can be closed over a base that includes a curved beam-type wiper blade compartment formed therein. The compartment includes a wiper blade beam or backbone seat and a wiping blade element land, an adapter clearance recess defining a lip that facilitates package opening and closing and wiper blade removal facilitating pockets. The compliant joint preferably is a living hinge of double fold construction that serves to strengthen the package when closed.

A slide clamp includes a slot formed in a plate though which a fluid tube is mounted. The tube may be moved to a flow section of the slot or to an occluding section of the slot. Interconnecting the flow and occluding sections is a pinch zone in which the slot is narrower than the occluding section. Because of this narrow slot, the pinch zone resists movement of the tube from either the occluding or the flow sections into another section. The pinch zone includes a pair of curved beams that are formed as a result of apertures formed in the plate at locations laterally outward from the slot of the pinch zone. As a tube is forced from the occluding section to the flow section the curved beams flex outwardly permitting the tube to pass. However, if enough force is not applied to the tube, it will not overcome the curved beams and they will stop movement of the tube. After the tube has passed, the curved beams resiliently return to their rest position once again providing a stop. The beams are symmetrically shaped and will permit movement of the tube in either direction. The apertures also provide identification markers for the slide clamp.

The system of the present invention includes an actuator having at least two electrodes, an elastomeric dielectric film disposed between the two electrodes, and a frame attached to the elastomeric dielectric film. The frame provides a linear actuation force characteristic over a displacement range. The displacement range is preferably the stroke of the actuator. The displacement range can be about 5 mm and greater. Further, the frame can include a plurality of configurations, for example, at least a rigid members coupled to a flexible member wherein the frame provides an elastic restoring force. In preferred embodiments, the rigid member can be, but is not limited to, curved beams, parallel beams, rods and plates.

In a preferred embodiment the actuator can further include a passive element disposed between two flexible members such as, for example, links to tune a stiffness characteristic of the actuator. The passive element can be a bi-stable element. Further, the actuator can include a plurality of layers of the elastomeric dielectric film integrated into the frame. The elastomeric film can be made of different materials such as, for example, acrylic, silicone and latex.

A pupil expansion apparatus is placed in the eye during an ophthalmic surgical procedure. In one embodiment, the pupil expansion apparatus is a square frame structure that comprises four straight beams which cross each other at their ends to form a cross beam arrangement. However, the expansion apparatus is not limited to being a square frame structure, and may have a circular, or any multi-sided frame structure. The crossed ends of the straight beams are connected by one or more curved beams, which also form iris supporting portions. The iris supporting portion is shaped in an open, curved form so as to be perpendicular to the plane formed by the frame. It receives the rim of the iris tissue when the pupil expansion apparatus is in its extended position and gently presses the iris to the periphery.

The invention relates to a circular awning with a cable dome and a spatial steel truss being combined and a construction method of the circular awning. The circular awning comprises an awning roof and a main body; the circular awning is an approximately spherical segment surface; the awning roof is of a cable dome structure; the main body is of a spatial steel truss structure; the bottom end of the cable dome is fixedly connected with the top end of the spatial steel truss structure. The spatial steel truss structure comprises at least one layer of weft curved beam which is a polygonal spatial steel truss. The spatial steel truss structure comprises at least two layers of weft curved beams and radial curved pillars; the radial curved pillars are connected with each layer of weft curved beams, and every two adjacent radial curved pillars are connected through weft pull rods which are arranged at intervals according to fixed latitudes. The circular awning disclosed by the invention combines tensile and rigid structures, integrates inward tension of the tensile structure and outward thrust of the spatial steel truss structure, and realizes self-balance of inside and outside stresses; the stress of an arched steel structure is reduced, the integral structural stability is better, and meanwhile, the horizontal thrust of the lower part of the steel truss structure and a support is reduced, the maintenance cost of late-stage anticorrosion is reduced, and the construction efficiency is high.

An ion implantation apparatus is disclosed in this invention. The ion implantation apparatus includes a target chamber for containing a target for implantation and an ion source chamber includes an ion source for generating an ion beam. The ion source chamber further includes an ion beam steering means for steering the ion beam through a curved beam-trajectory to a targeted ion-beam direction. The ion source chamber further includes a beam deceleration optics for decelerating and filtering the ion beam for spreading out the ion beam over an angular range according to an energy and an electric charge of each ion of the ion beam. The ion beam apparatus is able to more accurately direct a low energy ion to a target wafer. The ion beam steering means coordinating with the beam deceleration means for generating an electromagnetic field for separating neutralized particles from charged particles by steering the neutralized particles to transmit in a neutralized-particle direction slightly different than the targeted ion-beam direction. The beam deceleration optics further includes a plurality of electrodes for generating an electric field for spreading the charged ion beam over an angular range to accurately control the trajectory paths of ions of different energy levels. The purpose is to eliminate the energy contamination by more accurately controlling the energy range of the charged ions to reach the target for implantation and to block the neutralized particle and ions of higher energy from reaching the target for implantation.

The invention relates to a tire walking full-hydraulic lining trolley and belongs to the technical field of tunnel construction. The trolley comprises a trolley body. A trolley hydraulic leveling supporting and walking system, gantries and a template and hydraulic template supporting adjusting system are arranged successively from the bottom to the top according to the trolley height direction. The trolley hydraulic leveling supporting and walking system comprises trolley overall leveling and supporting hydraulic oil cylinders, a curved beam and tire walking systems. The trolley overall leveling and supporting hydraulic oil cylinders are fixed on the curved beam, and the tire walking systems are arranged at the bottom of the curved beam. The gantries comprise lower bearing gantries and upper bearing gantries, the lower bearing gantries are fixed on the upper portion of the curved beam, and the gantries and the trolley overall leveling and supporting hydraulic oil cylinders are arranged on a same perpendicular line. The template and hydraulic template supporting adjusting system comprises templates, lateral template supporting hydraulic adjusting supporting oil cylinders, vertical template supporting hydraulic adjusting oil cylinders and horizontal template supporting hydraulic adjusting oil cylinders.

An elongate article holding package for a pre-curved beam blade wiper blade includes a pair of packaging panels joined by a living hinge. In a currently preferred embodiment, the package has two panels joined by a living hinge. A first panel is configured to retain the wiper blade in a substantially straight configuration within a cavity formed in the panel, and the second panel is pivotally connected by the living hinge to be disposed in either a closed or an open position with the first panel. The first panel preferably includes a first channel having a first bottom wall and a second channel disposed in the first bottom wall and in communication with the first channel. The first panel preferably also includes retention fingers to positively retain the wiper blade and recessed sidewall portions to facilitate insertion and extraction of the wiper blade into the first panel.

The invention discloses a recoverable six-way buffer energy-absorbing metamaterial and a design method thereof, and relates to the technical field of metamaterials. The recoverable six-way buffer energy-absorbing metamaterial comprises a multi-cell metamaterial structure formed by periodically arranging a plurality of unit cells, wherein each unit cell is composed of a cuboid frame and a crossed curved beam, the cuboid frame is composed of 10 straight beams, the crossed curved beam is composed of two curved beams, six sets of crossed curved beams are installed in six surfaces of the cuboid frame, the ends of the crossed curved beams are fixedly connected with the cuboid frame, the bending directions of the crossed curved beams arranged on the opposite surfaces of the cuboid frame are consistent, the middle parts of the crossed curved beams in different unit cells are connected together through connecting rods, and the multiple unit cells are periodically arranged to form the multi-cellmetamaterial structure. The metamaterial is formed by periodically arranging the unit cells, the mechanical properties of the metamaterial in all directions can be adjusted by compiling the mechanical properties of the crossed curved beams in the unit cells, and the metamaterial is wide in application range, easy to machine, capable of being directly manufactured through the 3D printing technology and convenient to apply and popularize on a large scale.

The invention relates to the technical field of monorail traffic tracks, in particular to a replacing beam turnout structure and a turnout switch method. The replacing beam turnout structure comprises a straight beam, a curved beam, a drive device and locking devices. A connection rod is hinged between the straight beam and the curved beam. The straight beam is used for straight rib communication of a turnout and track beams. The curved beam is used for side rib communication of the turnout and the track beams. The drive device is fixed to the ground. The other end of a push rod of the drive device is hinged to the middle of the straight beam. The drive device is used for releasing swinging power of the straight beam. The tail end of the straight beam and the tail end of the curved beam are both connected with the single surface of a foundation bottom plate in a rotating manner through a rotating assembly. The head end of the straight beam and the head end of the curved beam are both provided with the locking devices. The locking devices are used for locking connection of the straight beam or the curved beam and the track beams. According to the replacing beam turnout structure and the turnout switch method, when the turnout switches, the drive device drives the straight beam to swing, the curved beam swings under the pull action force of the connection rod so as to connect the track beams at the two ends of the turnout through the straight beam or the curved beam, the locking devices conduct locking, and the turnout switch function is achieved.

The invention provides a compound energy consumption one-way bridge support with a simple construction, convenient machining and stable performance. By using the characteristics of curve and tensile deformation of soft steel curved beams, the support mainly comprises a lower basin (1), an upper basin (2), a spherical cap lining plate (3), a curved beam (4), anchored steel sleeves (9), and anchor bolts (10). The spherical cap lining plate (3) is positioned between the upper basin (2) and the lower basin (1), and is concentrically matched with the upper basin (2). The upper basin (2) and the lower basin (1) are provided with four anchored steel sleeves (9) and the anchor bolts (10) respectively. The curved beam (4) is symmetrically arranged between the upper basin (2) and the lower basin (1), and two ends of the curved beam (4) are hinged with the spherical lining plate (3) and the lower basin (1) respectively. The support allows for the longitudinal bridge deviation between the upper basin and the lower basin, while the transverse bridge deviation is restrained. When the longitudinal bridge deviation between the upper basin and the lower basin occurs, the energy of the system is consumed through the deformation (curve, stretch) of the curved beams to achieve the aim of reducing the vibration; therefore, the conventional support has the function of energy consumption.

The invention discloses a ceiling fault surface structure of an urban rail stainless steel vehicle. The ceiling fault surface structure comprises two upper chord beams and a plurality of curved beams which are laterally arranged at intervals on the upper chord beams in parallel, wherein two ends of each of the curved beams are respectively butted against on the positioning surfaces of the upper chord beams; the top surfaces of two ends of each of the curved beams are respectively combined with a side top plate in a clamping manner; a covering surface is arranged on the upper central surfaces of curved beams; the covering surface comprises a corrugated plate region and an arc plate region which are in arc welding connection; an air conditioner platform is arranged in the arc plate region; the top surface of the corrugated plate region and the top surface of the arc plate region are on the same plane. The novel stainless steel ceiling fault surface structure effectively solves the problem of light weight design of a vehicle body structure, the weight of the vehicle body structure per unit length can be reduced by about 20kg, the production technology flows are simplified, and the production efficiency is improved. Material consumption is reduced, so that the material cost is reduced. The number of small built-in steel structure components is obviously reduced, the small components are simple in structure and easy to produce and weld, and a design basis is provided for the novel stainless steel vehicle body structure.

The invention relates to a periodic curved beam structure floating raft based on wave mode conversion. The periodic curved beam structure floating raft mainly comprises an upper panel, a plurality of middle periodic curved beam structures and a lower panel, wherein the plurality of the periodic curved beam structures are arranged in the length direction and the width direction of the panels side by side and periodicity is formed in each of the length direction and the width direction; in the thickness direction of the panels, the periodic curved beam structures are of the periodic structures formed by multiple layers of small panels and curved beams; when vibration is propagated along the thickness direction via the curved beams, transfer and conversion of waves can occur, the stop band characteristics of the periodic structures are formed, and the vibration can be greatly attenuated; and the small panels of all the periodic curved beam structures are connected with the upper panel and the lower panel. The floating raft provided by the invention utilizes the stop band characteristics of the periodic structures and utilizes the curved beams with a wave mode conversion effect as elastic elements for providing static stiffness and dynamic stiffness, thereby increasing vibration attenuation, realizing a wideband gap in a lower frequency band and increasing the vibration isolation performances of a low frequency band and a wide frequency band of a vibration isolation device of the floating raft.