468results about How to "Increased torsional strength" patented technology

A mobile moving system that faculties freight movement includes movable approach ramps and a mobile base. The mobile base includes material handling devices configured to move freight longitudinally between a loading position, a transport position, and an unloading position. Parallel pocket members having a hollow-box-like shape are positioned along a portion of the plurality of the material handling devices to increase the torsional strength and rigidity of the material handling devices. The parallel pocket members are spaced apart and dimensioned so that each of the plurality of parallel pocket members may receive one or more prongs of an industrial vehicle.

A threaded metallic joint has the thread surface of pin (100) and box (200) covered with a coating comprising a first layer (24) laid on the overall surface of the pin member (100), and a second layer (25) laid on part of the surfaces of either one of the pin or box members. In a first aspect, the coating comprises a first layer with high friction and anti-seize properties laid on the overall surface of the pin member (100), and a second layer (25) with low friction properties laid on specific parts of the surfaces of either one of the pin or box members. Preferably the specific surfaces are those which are in reciprocal radial contact during make-up until pin and box reach the point where shoulders (9, 10) abut. The second layer may contain polytetrafluoroethylene (PTFE). In a second aspect the first layer with a high friction and anti-seize properties laid on the overall surface of the box member (200).

Apparatus for drilling a hole in material, the apparatus comprising:

• • an angled drill guide comprising a curved distal section, a less-curved proximal section, and a lumen extending therebetween, wherein the less-curved proximal section comprises a flat extending therealong for reducing the effective diameter of the less-curved proximal section so as to minimize interference between the angled drill guide and the side wall of an access cannula.

Bioresorbable scaffolds for bone engineering, such as repair of bone defects, particularly long bone defects, or augmentation of bone length are described. Scaffolds are porous and comprise multiple side channels. In one embodiment, scaffolds are made from layers of micro-filament meshes comprising polycaprolactone (PCL) or a PCL-composite sequentially laid in incremental 60 degrees of rotation to produce a 0/60/120 degree layering pattern, providing for the formation of interconnected pores. The scaffold can comprise a central channel filled, packed or infused with suitable agents such as bioactive agents. Furthermore, the scaffolds are stiff but yet fracture resistant and with sufficient bending, compressive and torsional strength suitable for bone engineering. The slow degradation of the scaffold is sufficient for the 3D matrix to maintain structure integrity and mechanical properties during the remodelling process.

A seat frame of a vehicle seat includes a seat cushion frame on a seat cushion side, a seat back frame on a backrest side, and a reclining device provided between the seat back frame and the seat cushion frame for adjusting an angle of incline of the seat back frame relative to the seat cushion frame. Either one of the seat back frame or the seat cushion frame includes a first member having a first fitting plane portion to the reclining device and a second member connected to the first member by holding a first space therebetween, and a hollow portion connected to the first space provided on an outer periphery of the first fitting plane portion.

The invention relates to a structural configuration of the rear fuselage (4) of an aircraft with propeller engines (1) comprising propellers (23) formed in turn by blades (3), the mentioned propeller engines (1) being located at the rear part of the aircraft and the empennage (5) of the aircraft in turn being located behind the plane of the propellers (23), characterized in that the structural configuration of the rear fuselage (4) comprises an outer skin (6) and an inner skin (7), both skins (6, 7) being joined by means of radial elements (13) configuring cells (14), such that the obtained structural configuration maximizes the torsional strength of the rear fuselage (4) of the aircraft in the event of damage of the mentioned rear fuselage (4) due to the detachment of one of the blades (3) of the propeller engines (1).

Aircraft fuselage section (32) subjected to impacts of external bodies, the aircraft fuselage having a curved shape with at least a vertical symmetry plane (A-A) and a central longitudinal axis and comprising a skin (35) and a plurality of frames (37) arranged perpendicularly to said longitudinal axis (33), the aircraft fuselage section also comprising at least an inner reticular structure (51, 53) mounted on a supporting structure (41, 43) comprising longitudinal beams (39) attached to the skin (35) and interconnected with said frames (37), said inner reticular structure (51, 53) being arranged for creating at least one closed cell (75) with the skin (35) for improving its resistance and its damage tolerance to said impacts. Said inner reticular structure (51, 53) can be formed by panels (61), rods (65, 65′), cables (67, 67′) or belts (69, 69′).

A golf shaft which features lightness, high crushing strength and high torsion strength with no interlayer peeling, as well as an excellent aesthetic design with a three-dimensional effect which gives the user a sense of depth, and a method for forming the same and a golf club using the same. The golf shaft is produced by baking a plurality of fiber prepreg layers. The shaft is a laminate comprising: a main layer of resin-impregnated high-strength high-elasticity fiber; a metal wire layer laid over the main layer; and a layer of low-elasticity fiber, laid over the metal wire layer, impregnated with resin through which the underlying metal wire layer can be seen.

A toner cartridge can be attached to and detached from an apparatus main body. The toner cartridge includes an outer housing having a substantially rectangular upper cross section and a substantially semi-circular lower cross section, and an inner housing that is disposed inside of a lower portion of the outer housing and that has a cylindrical shape with an opening formed at its side surface, the inner housing being rotatably supported in the lower portion of the outer housing, and at the opening a bridging portion being formed along a longitudinal direction of the inner housing.

In a surface light source device including: a light source section having a light emitting face; an optical panel arranged so as to cover the light emitting face; and a at least one frame having a front face portion that covers the peripheral portion of the light emitting face, the at least one frame is composed of a plurality of divisional members connected with each other and a light shielding portion is provided at each slit between the divisional members in the front face portion of the at least one frame. Whereby, light from the light source section is prevented from leaking through each slit between the divisional members in the front face portion of the at least one frame.

The tube (6) comprises a wall which is composed of a plurality of layers (2; 3; 5; 4). Longitudinally extending wires (3) are provided in the wall. At least one layer (2, 4) which is wound over the circumference of the tube (6) is present inside and/or outside with respect to the longitudinally extending wires (3).

The invention provides a fiber reinforced pipe for a mine and a production method thereof. The fiber reinforced pipe comprises a lined pipe, wherein the lined pipe is made of an antiflaming and antistatic special polyethylene material, so that the fire resistance and anti-static electricity performance of a pipe are improved; therefore, the safety of the pipe is improved; the weight of the polyethylene is light, so that the pipe can be conveniently installed and transported; moreover, the fiber reinforced pipe has a simple structure and can be processed conveniently; and the processing method of the fiber reinforced pipe is easy to operate, and can improve the fire resistance of the fiber reinforced pipe.

A method for connecting a tube and a cast component includes widening an end section of the tube to form a widened section, positioning the cast component adjacent to the widened section, and welding the cast component to enclose at least a portion of the widened section with a weld deposit in at least one step, thereby locking the tube and the cast component together. A connection between a tube and a cast component is also provided.

A flexible drill bit comprising:

• • a proximal shaft portion for connecting to a source of turning;
  • a distal cutting tip portion for boring into a material; and
  • an intermediate shaft portion extending between the proximal shaft portion and the distal cutting tip portion, the intermediate shaft portion being characterized by (i) sufficient longitudinal flexibility so as to permit the flexible drill bit to be passed along a curve, and (ii) sufficient torsional strength to permit the flexible drill bit to bore into the material.

Structural building components and a method of constructing the same enable improved beams that can be constructed at a place of use. The method includes providing a first flange (16) and a second flange (18) defining a central beam axis (55). A number of separately formed web sections (12) are provided, each having two convergent side walls (42) and a central wall (40) extending between converging ends of the side walls (42). The web sections (12) are arranged side by side in an alternating arrangement wherein the central walls (40) of adjacent web sections (12) are spaced substantially parallel to each other and are transversely staggered relative to the central beam axis (55). The side walls of adjacent web sections (12) are connected to one another, and the web sections (12) are connected to both the first flange (16) and second flange (18).

The invention provides a high-strength pretightening-force yield anchor rod of glass fiber reinforced plastic, which effectively solves the problems of small tensioning force resistance and poor anchoring effect of the original anchor rod. A metal yield ring is arranged between a nut and a tray on an anchor rod assembly. The front end of the anchor rod of glass fiber reinforced plastic is a flat-annular body, and the diameter of the flat-annular body on the front end of the anchor rod is bigger than that of the tail part of the anchor rod. The anchor rod of glass fiber reinforced plastic is effectively prevented from being broken by over-high stress, and the tail part of the rod body is prevented from being broken by applying pretightening force, thereby the torsional resistance of the anchor rod of glass fiber reinforced plastic is improved.

The invention discloses a novel earthquake damage control system for a thin-wall hollow pier. The novel earthquake damage control system comprises a pier base, a thin-wall hollow pier, high-tenacity fiber-enhanced cement-based composite material expanded sections, an unbonded prestressed tendon and steel energy consumption elements, wherein the thin-wall hollow pier is arranged on the upper end surface of the pier base, so that the torsional strength and the energy-dissipating capacity of the thin-wall pier are improved. The high-tenacity fiber-enhanced cement-based composite material expanded sections are arranged on the inner side and the outer side of the lower part of thin-wall hollow pier; a series of steel energy consumption elements are arranged in the thin-wall hollow pier along the pier height; the lower part of the unbonded prestressed tendon is anchored on the pier base; and the upper part of the unbonded prestressed tendon is anchored at the center of the first steel energy consumption element from bottom to top. By virtue of the unbonded prestressed tendon, the self-resetting capacity of the pier after the earthquake is provided; and the crack width of the pier after the earthquake is reduced. By virtue of the high-tenacity fiber-enhanced cement-based composite material expanded sections, the axis-compression ratio of the bottom section of the thin-wall hollow pier is reduced; the shear-bearing capacity and the anti-bending capacity of the thin-wall hollow pier are increased; and the steel energy consumption elements can be arranged as rapid exchange components, so that the repairability after the earthquake is increased.