817results about How to "Uniform tension" patented technology

A net member is stretched over a frame for a seat and backrest of a chair. An engagement member attached to the end of the net member is inserted into an engagement groove on the lower surface of the basic frame. A binding frame is pressed onto the lower surface of the basic frame and the net member is fixed between the basic frame and the binding frame by the engagement piece.

Warps are woven or knitted in a mesh structure over the seat and backrest to wefts comprising elastic yarns and chenille yarns.

A linerless tank structure has a body that defines an enclosed interior volume. The body has a cylindrical section having an axis of symmetry and a dome section coupled with the cylindrical section. The construction of the pressure vessel includes multiple fiber plies. At least one of the fiber plies is a helical ply having fibers traversing the dome helically about the axis of symmetry. At least a second of the fiber plies is a braided or woven ply.

A tensioned touch panel includes a support structure having a substrate with a generally planer conductive surface disposed thereon and an insulating spacer generally about the periphery of the substrate. A pretensioned conductive member overlies the support structure. The spacer separates the conductive membrane and the conductive surface thereby to define an air gap therebetween. A conductive membrane is secured to the support structure under sufficient tension to inhibit slack from developing in the conductive membrane as a result of changes in environmental conditions. A method of assembling a tensioned touch panel is also provided.

Disclosed is a two-component device for closing a laceration or incision. The device includes a first component comprising a first adhesive-backed anchoring member and one or more first connecting members extending from one edge thereof in a first direction. Also included is a second component comprising a second adhesive-backed anchoring member and one or more second connecting members extending from one edge thereof in a second direction generally opposite to the first direction. Adhesive is provided for attaching the one or more first connecting members to the second anchoring member and for attaching the one or more second connecting members to the first anchoring member. The attachment of the connecting members to the anchoring members forms attached and bridging portions of the one or more connecting members, the attached portions being attached to an anchoring member, and the bridging portions spanning the over-laceration area between the first and second anchoring members. Adhesive is applied to at least a portion of a lower surface of the connecting members, and the lower surface of the bridging portion contains less adhesive than the attached portion. In preferred embodiments, the lower surface of the bridging portion is substantially free of adhesive. Methods of use are also disclosed.

The invention provides a hand-held automatic binding tool which comprises a main machine, a gun head, a feeding pipe and a data line. The main machine is connected with the gun head through the feeding pipe and the data line. The hand-held automatic binding tool further comprises a vibrating plate and straight vibrator. The vibrating plate is located on the left side of the main machine. The straight vibrator is connected to the right side of the vibrating plate. The straight vibrator is connected with a pushing chamber. The vibrating plate screens and sorts bulk binding bands. When an optical fiber sensor detects that the front-most binding band is in position, an air cylinder pushes the front-most binding band into the feeding pipe, a trigger is pulled to allow compressed air to feed the binding band into the gun head, and the gun head completes winding, perforating, tightening and cutting off. The hand-held automatic binding tool has the advantages that binding efficiency is increased greatly, binding can be completed while hands are not in contact with the binding bands, labor intensity of workers is relieved greatly, the gun head is small in size and lightweight, and the gun head is connected with main machine through the flexible pipeline.

A tension control device (10) for regulating the payout of filamentary material (24) from a spool (22) includes a fixed support (12, 14), a swing frame assembly (16) pivotably mounted on the fixed support and predisposed to a holding position, and a spindle assembly (20) carried by the swing frame assembly. The spindle assembly (20) carries the spool (22) and rotates with the spool as the filament is pulled off the spool. A braking assembly (18) is pivotably mounted on the fixed support (14) and is movable with the swing frame assembly (16). A cam (30) is fixably mounted on the fixed support and bears against the braking assembly (18) and forces the braking assembly to control the rotation of the spindle assembly. A pull-off force applied by filamentary material causes the swing frame assembly to move away from the holding position and allows rotation of the spindle assembly. A loading assembly fixably mounted on the fixed support positions the swing frame assembly and the braking assembly to a holding position that must be overcome by tension applied by the filament in order for the spool to begin rotation.

A clamp system for releasably securing a screen to a vibratory separator apparatus, and methods of its use, and a plate for such a system, the clamp system having, in certain aspects, a plate for contacting a screen end of a screen to be mounted to a vibratory separator apparatus, the plate having a plate linear dimension and the screen end having a screen linear dimension, the plate having a plate body, a bolt with a first end extendable through the plate and a second end extendable through part of the vibratory separator apparatus, the bolt tightenable in place to hold the plate in position with respect to the screen and the vibratory separator apparatus, and the plate linear dimension substantially equal to the screen end linear dimension.

The invention provides an ultra-deep mine hoist multi-rope cooperative control system and method, and belongs to a hoist multi-rope control system and method. An output shaft of each variable frequency motor is connected with a hoist winding drum, a variable frequency motor controller is connected with the variable frequency motors, each steel wire rope is connected between the corresponding hoist winding drum and a container, a servo hydraulic cylinder is arranged on the path, between the corresponding hoist winding drum and the container, of each steel wire rope, a servo hydraulic cylinder control system is connected with the servo hydraulic cylinders, the top of each servo hydraulic cylinder is connected with a hoisting sheave through a hinge support, each steel wire rope is connected with a tension and pressure sensor, and the container is connected with a position-posture-angle sensor; the servo hydraulic cylinders are connected with proportional servo valves, and the input port of each proportional servo valve is connected with an energy accumulator, an overflow valve, a one-way valve and a stop valve at the same time; the servo hydraulic cylinder control system is provided with a wireless receiver, the position-posture-angle sensor and the tension and pressure sensor are provided with wireless emitters, the position-posture-angle sensor feeds back position and posture conditions of the container and adjusts stretching out and drawing back of the hydraulic cylinders, and the situation that the container is inclined due to the fact the steel wire ropes move in a non-synchronous mode is avoided.

A drumhead with an outer ring member anchored to the outer periphery of a drum and having a threaded interior surface. An inner ring member having a threaded exterior surface matingly threaded to the interior surface of the outer ring.

Rotating the inner ring in a first direction relative to the outer ring, increases the tension exerted on the drum skin. Similarly, rotating the inner ring in a second direction relative to the outer ring, decreases the tension exerted on the drum skin.

Vertical pressure is exerted on the drum skin and drum ring when the inner ring is rotated in a first direction relative to the outer ring. Conversely, the pressure is released on the drum skin and the drum ring when the inner ring is rotated in a second direction relative to the outer ring.

The invention relates to a steam drying device of a continuous pigment dyeing padding mangle, which comprises steam drying cylinders, drying transmission mechanisms, a second humidity-discharging device, a water ratio detecting device and an electric cabinet which are arranged on a second mangle frame, wherein the steam drying cylinders are divided into two groups; and the drying transmission mechanisms are divided into two groups correspondingly. During operation, the drying transmission mechanisms drive a fabric to advances sequentially to be dried on the steam drying cylinders. If the water ratio detecting device detects that a water ratio is overhigh, the electric cabinet can be operated in an automatic or a manual mode to reduce the rotating speed of a transmission motor to increase drying time; and otherwise, the rotating speed of the transmission motor is increased to reduce the drying time. Because two groups of steam drying cylinders are adopted to achieve a high advancing speed of the fabric, the steam drying device of the continuous pigment dyeing padding mangle improves the drying efficiency and has a high processing capacity of the drying fabric.

The invention discloses a topological structure design method for a foldable paraboloid antenna cable net surface based on electrical performance optimization, and the foldable paraboloid antenna cable net surface consists of a front cable net surface and a rear cable net surface. The design of the front cable net surface comprises the steps: taking internal nodes of the front cable net surface as design variables, taking boundary node fixing as the boundary condition, obtaining all node coordinates of the front cable net surface under the conditions that all internal nodes are not limited by an ideal paraboloid and the internal nodes are in the state of force balance, carrying out the axial translation optimization of all node coordinates based on the antenna gain electrical performances, and achieving the minimization of an illumination weighted profile error of a front cable net surface. The design of the rear cable net surface comprises the steps: employing the same design method as the front cable net surface under the condition that the total height of a foldable paraboloid antenna is met, and obtaining the structure of the rear cable net surface. The method achieves the excellent structural layout of the foldable paraboloid antenna cable net surface, can remarkably improve the profile precision, stability and electrical performance of the foldable paraboloid antenna.

The invention is concerned with test method for large windlass before leaving factory. It adopts two windlasses to carry the draw loading test and it will carry all tests according to the provision, such as static load, dynamic load, rating speed and braking capability. Put one tested windlass and one load windlass face to face and connect the two roll canisters of windlass with steel wire. The pull of steel wire is the internal force of windlass while the windlass does not need to be fixed with the ground. Add middle hydraulic pressure oil jar support equipment between the two tested windlasses to adjust the pull of two steel wires. The invention only uses the drive system of windlass without adding expert test equipment and solves the loading course test problem to large and heavy windlass to save lot of investment and test field. The type and test method of large windlass fit for test to double uniting roll canister, single roll canister and all kinds of roll canister.