259 results about "Elastic string" patented technology

A bracket includes a rigid member that can be fastened to a fixture such as a wall, and flexible elements depend downwardly from the rigid member and are engaged with a tubular motor assembly of a window covering, awning, projector screen, or the like, to couple the motor assembly to the fixture while attenuating the propagation of vibrations from the tubular motor assembly to the fixture. This reduces noise in the room. The flexible elements may be flexible strings, elastic strings, or coil springs and have horizontal stiffness coefficients much lower than the vertical stiffness coefficient.

An apparatus and method for manufacturing an elastic composite structure for an absorbent sanitary product includes a bonding unit configured to bond a first web layer to a second web layer via a bond pattern that includes at least one bond line having at least one pair of adjacent bonds. The bonding unit secures an elastic thread within a passage defined by the at least one pair of adjacent bonds. The passage has a cross-sectional area smaller than a cross-sectional area of the elastic thread in a non-tensioned state.

The present invention relates to a foldable pole including: an upper tube having a handle mounted thereon, a lower tube having a head part mounted thereon, and one or more intermediate tubes disposed between the upper tube and the lower tube; an elastic string having one end portion fixed to the inner lower end of the lower tube or the inner upper end of the upper tube and the other end portion extended up to the inner intermediate portion of the lower tube or the upper tube; and a non-elastic string having one end portion connected to the other end portion of the elastic string and the other end portion extended fixedly up to the interior of the upper tube or the lower tube.

A decorative zipper tab construction with an elastic string of high tension comprises a holding base having an extrusion on the top, an elastic element mounted on the extrusion, and a decorative tab for covering the holding base and the elastic element. By way of the extrusion of the holding base, the elastic element can be firmly covered inside of the decorative tab and thereby lasting the life of use of the zipper tab. In addition, the user may draw the zipper smoothly by simply pulling the decorative tab.

The invention discloses a low-rigidity suspension system and an implementation method of the low-rigidity suspension system. The low-rigidity suspension system is implemented by obtaining design parameters such as length of elastic strings and number of elastic strings and the like required by the low-rigidity suspension system and by mastering a parallel system of a single unit length elastic string and a plurality of unit length elastic strings as well as characteristics of n-time unit length elastic strings by means of characteristics of good vertical nonlinearity and low-rigidity of the elastic strings. According to the low-rigidity suspension system and the implementation method of the low-rigidity suspension system provided by the invention, the rigidity characteristic of the elastic strings is obtained by a simple unit weight accumulating test method by means of current common elastic strings, and the low-rigidity suspension system which meets the demand of test can be erected rapidly through simple and convenient installation tools. The suspension system can particularly realize vertical i.e. gravity-direction lower rigidity, while the transverse rigidity can be used to control the length of the elastic string to obtain the low rigidity. The low-rigidity suspension system provided by the invention has the advantages of simplicity, rapidness, flexible design, low cost and the like, so convenience is provided for the implementation of the low-rigidity suspension test.

A diaper includes first and second sheets having elastic strings, and a crotch section with an absorbent body connected to the first and second sheets. The first sheet includes two first margins, each of which is contiguous to one of first outermost edges, and a first notch that is indented inwardly from one of the first outermost edges to extend inwardly through and beyond the adjacent first margin. The second sheet includes two second outermost edges, two second margins. The second margins are thermal bonded respectively to the first margins to form thermal seams. The first notch forms a first opening contiguous to one of the thermal seams to provide good ventilation and to ease tearing of the diaper at the thermal seam.

The invention relates to a launching frame and system for launching an unmanned aerial vehicle. The launching frame comprises a launching frame body, a skate frame, a launching rope and a driving device. The skate frame is arranged on the launching frame body and used for bearing and launching the unmanned aerial vehicle. The launching rope is arranged at the launching end of the launching frame body. The skate frame is arranged at the initial end of the launching body and can slide in the extending direction of the launching frame body. A driving device is connected with the skate frame and used for driving the skate frame to move in the extending direction of the launching frame body so that the skate frame can collide with the launching rope to launch the unmanned aerial vehicle. When the unmanned aerial vehicle is launched, the driving device is used for driving the skate frame to linearly move on the launching frame body, and motion of the skate frame does not need to be powered by stretching deformation of an elastic string, so that the launching frame is small in overall size, easy to operate and capable of improving the launching efficiency of the unmanned aerial vehicle.

The invention discloses a composite hydraulic system broad-spectrum fluid pressure pulsation attenuator. The two ends of a shell are provided with a front end cap and a rear end cap. A small-diameter inner pipe, a large-diameter inner pipe and a fluid attenuation assembly are fixedly mounted in the portions, between the front end cap and the rear end cap, of the shell. The two ends of the small-diameter inner pipe separately communicate with a fluid inlet and a fluid outlet. The pipe walls of the small-diameter inner pipe and the large-diameter inner pipe are both provided with damping holes. The fluid attenuation assembly comprises circular hole screen heads arranged at the two ends of the small-diameter inner pipe, a mesh enclosure particle assembly arranged in the small-diameter inner pipe and an elastic string barrel arranged between the small-diameter inner pipe and the large-diameter inner pipe. By adoption of the composite hydraulic system broad-spectrum fluid pressure pulsation attenuator, pulsation energy can be effective attenuated in the mode that a dissipation system and a mass-spring system are combined, fluid is guided to flow, the transmission speed is greatly decreased to control fluid fluctuation, the pulsation amplitude of the pressure fluid flowing through the attenuator is effectively and greatly decreased, the frequency bandwidth of pulsation attenuation is further broadened, broad spectrum and maximization of the attenuation effect are achieved, and the double-filtering effect of structure resonance and fluid resonance is achieved.

The invention discloses a fruit grabbing manipulator and a grabbing method thereof. The fruit grabbing manipulator comprises a flexible clamping jaw, a rigid clamping jaw and an opening and closing driving mechanism; the flexible clamping jaw and the rigid clamping jaw are connected with the opening and closing driving mechanism, and a fruit clamping space is formed between the flexible clamping jaw and the rigid clamping jaw; and the flexible clamping jaw comprises a jaw frame and elastic strings, and a plurality of the elastic strings are distributed on the side, facing the rigid clamping jaw, of the jaw frame. The grabbing method comprises the steps that after the fruit grabbing manipulator moves to the position over to-be-grabbed fruit, the opening and closing driving mechanism drivesthe flexible clamping jaw and the rigid clamping jaw to be opened towards the two sides, after the fruit enters the fruit clamping space, the opening and closing driving mechanism drives the flexibleclamping jaw and the rigid clamping jaw to be folded, and the fruit is flexibly clamped through the elastic force of the elastic strings arranged on the flexible clamping jaw. The fruit grabbing manipulator can achieve flexible clamping, can effectively adapt to fruit appearance and outer diameter size changes and is wide in application range.

The invention discloses an intelligent safety rope device for building protection. The intelligent safety rope device comprises a stroke guide rail, a stroke motor, a control central pivot, a protective cover, a rope motor, a rope roller, a safety rope, an auxiliary elastic string, a rope detector, a safe fixed seat, a controller, a positioning signal projector and a positioning receiving matrix. According to the invention, the intelligent safety rope device can monitor the dynamic state of building constructors in real time, automatically shrinks for rescue in case of a fall danger, decreases the accident rate of occupational injury, is of great significance for personal safety guarantee of the building constructors, and is suitable for application and popularization.

An exerciser includes a safety block having two through holes defined through the safety block and two cutouts defined in two opposite sides of the safety block, two elastic strings respectively extending through and securely received the two through holes of the safety block, two safety pads each provided to opposite sides of the safety block to securely connect to one end of the two elastic to allow an operator to work on thigh muscles and two rings connected to a corresponding one of the two safety pads to allow the operator to work on chest muscles.

The invention discloses a six-station numerical-control machining device, and relates to the technical field of numerical-control machine tools. The six-station numerical-control machining device comprises a machine tool shell; the middle of the inner wall of the machine tool shell is fixedly connected with a supporting sloping plate, the top of the supporting sloping plate is fixedly connected with a case and a rail from left to right in sequence, the top of the rail is slidably connected with a cutter holder, and the top of the cutter holder is fixedly connected with a cutter frame; the right side of the case is rotationally connected with a clamping device; and the top of the clamping device is fixedly connected with a springing box. According to the six-station numerical-control machining device, when a chuck key is inserted and a workpiece is fastened, the column section of the chuck key presses a push ring downwards, accordingly, a first spring is compressed, after fastening is completed, the chuck key automatically bounces out through the resilience force of the first spring to be separated from the clamping device, meanwhile, the chuck key can be lifted through the elasticforce of a lengthened elastic string, the situation that a worker forgets to taken down the chuck key after fastening, then, a machine is started, and risk occurs is avoided, and the using safety of the device is improved.

The invention discloses a head fixing device for surgical nursing. The head fixing device comprises a reclining plate, wherein the bottom end of the reclining plate is welded with a height adjustmentdevice, a reclining groove is formed in the center of the upper surface of the reclining plate, the inner portion of the reclining groove is internally bonded with a latex pad, a sliding groove is formed in a transverse plate, the center of the bottom end of a rectangular elastic string is bonded with a rubber pad, the top end of a pressing plate is welded with a cylinder, the inner portion of thecylinder is in threaded connection with a first threaded rod, the top end of the first threaded rod is welded with a disc, the bottom end of the first threaded rod is welded with the pressing plate,the outer wall of the top end of the transverse plate is welded with a supporting rod, the top end of the supporting rod is welded with an electric telescopic rod, and one end of the electric telescopic rod is welded to the outer wall of a placement seat. The head fixing device for surgical nursing has the advantages that the head of a patient is fixed more easily, the labor amount of medical workers is reduced, and the treatment efficiency is improved.

This lanyard, which is movable by elasticity between a rest position and a stretched position, comprises a tubular sheath made from non-stretchable material, and a set of elastic threads joined to the sheath.

According to the invention, the elastic threads define at least one longitudinal weaving zone in which they are woven on one surface of the sheath only, each weaving zone being proper to form a bending zone of the lanyard, in the rest position, in which the elastic threads are folded onto themselves.

The invention discloses a novel floor drain. The novel floor drain comprises a base, a metal cover plate, a filter screen and an air seal, wherein the metal cover plate is a downwards-recessed arc cover plate, and the middle part of the metal cover plate is hollow-out; the filter screen is in the shape of a barrel with the upper end open, and the opening of the filter screen is in butt joint with the hollow-out part of the metal cover plate; the air seal is in the shape of a barrel with the upper end open and is arranged on the periphery of the filter screen to wrap the filter screen; a sealing cover is arranged at the bottom of the air seal and connected to the bottom of the filter screen through an elastic string; the base is provided with a slot matched with the air seal in shape; the filter screen and the air seal are arranged inside the slot of the base; the metal cover plate is matched with the base in shape. The novel floor drain is convenient to clean, odor-resistant, insectproof, ant-blocking and high in sealing performance.

The invention discloses reduction spiral spring for tubing paraffin removal of a pumping well. The reduction spiral spring for the tubing paraffin removal of the pumping well comprises a body which is spiral springs made of elastic wire materials. The body which is arranged on a pumping rod which is arranged in the pumping well in a matching mode is corresponding to a tubing which is arranged inside the pumping well. The reduction spiral spring for the tubing paraffin removal of the pumping well is characterized in that a small diameter section spiral spring is connected with a large diameter section spiral spring to form into the body; the inner diameter of the small diameter section spiral spring is slightly smaller than the diameter of the pumping rod; and the outer diameter of the large diameter section spiral spring is slightly smaller than the inner diameter of the tubing. Compared with the prior art, the reduction spiral spring has the advantages of being high in rigidity, good in abrasion performance and long in service life due to the facts that the reduction spiral spring is made of elastic wire materials and the surface is covered with chromium coating; preventing blocking of the tubing due to the fact that paraffin coagulated on the tubing is scraped through the large diameter section spiral spring when the reduction spiral springs are performing up-and-down motion along the pumping rod; and being simple in structure and convenient to install and disassemble.

The invention discloses a drop-prevention walking aid vehicle for lower limb rehabilitation training and a rehabilitation training method. The drop-prevention walking aid vehicle comprises a vehicle frame with narrow-end-down design, universal wheels located at the bottom of the vehicle frame, an anti-collision frame located at the bottom of the vehicle frame, a seat cushion located in inner spaceof the vehicle frame, elastic strings connecting the seat cushion with the vehicle frame and an elasticity adjusting device respectively and a tray frame located at the top of the vehicle frame; thefront end of the tray frame and a vehicle frame connecting rod can both be opened. The drop-prevention walking aid vehicle has the advantages that a rehabilitation training process is not restricted by the environment any more, and a patient can perform rehabilitation training activities in the outdoor environment; the walking aid vehicle based on an original lower limb external skeleton rehabilitation robot, combined with a robot control technology and the drop-prevention walking aid vehicle and based on a clinically commonly effective dyskinesia rehabilitation method can bring better experience to the rehabilitation training process of the patient.