55results about How to "Concentrated force" patented technology

An adaptive cushion for reducing pressure on body parts of a person positioned on a chair or bed includes an overlay cushion having a plurality of individual air bladder cells, each having thereon a force sensor. The cushion includes a controller for inflating and deflating individual air bladder cells to air pressures that tend to reduce the interface pressures sensed by the force sensors. A pressure reduction method includes varying the inflation pressure in a first air bladder cell while measuring the sum of the interface pressures exerted on all or a plurality of the air bladder cells, re-pressurizing the first cell to that air pressure for which a minimum total interface pressure was obtained, repeating this process for the remaining air bladder cells.

A joint stabilizing apparatus having an expandable cylindrical housing is inserted into a circular hole drilled at a “loose joint” of a concrete slab that is to be stabilized against relative vertical displacement between adjacent slab sections. The hole is drilled downward into the concrete, centered on the plane of a lateral opening / joint in the concrete slab. The expandable housing comprises two rigid semi-circular housing halves, and the assembly is oriented inside of the circular hole such that the two housing halves are on opposite sides of the centerline of the lateral opening / joint. The housing halves are pushed apart by turning of a threaded bolt inside of the housing. Turning of the bolt causes two bi-laterally symmetric wedge blocks to draw towards each other, and pressing the bearing surfaces of the wedge blocks against inclined surfaces inside of the respective housing halves. As the housing halves are pushed apart, the outside surfaces of the expandable housing engage the walls of the drilled hole and apply opposing horizontal compressive forces to the slab sections. Friction between the expandable housing and the concrete slab sections prevent the slab sections from vertically moving relative to each other.In other embodiments of the invention, the joint stabilizing apparatus is used to prevent relative motion between non-horizontal construction members, and between four adjacent slab sections separated by intersecting loose joints.

A rotary type electric shaver with an outer cutter frame provided on a shaver main body. An outer cutter installed in this outer cutter frame and having its shaving surface on the upper surface of a ring-shaped thin layer portion. An inner cutter 16 having a cutter body that rotates and makes sliding contact from below with the lower surface of the outer cutter 14, wherein a thin layer portion 28 is formed in a substantially arc shape that is convex upward in a radial and vertical cross section that includes a center axis line which is the rotational center of the inner cutter. The thickness of the thin layer portion near the apex of the upward convex is smallest at the apex and gradually becomes thicker as distance increases away from the apex.

The invention discloses a full-mechanized hydraulic support fiber bragg grating pressure sensor, wherein the sensor adopts a cylindrical shell, and a pressure oil cavity, a sealing member and a sensing piston are arranged in the shell, the oil pressure change of the pressure oil cavity is transferred to the sensing piston, a belleville spring deforms under the action of oil pressure, sensing fiber bragg grating is attached onto a transmission device, the transmission device deforms when force is applied thereon so as to cause the wave length of the fiber bragg grating to change, and the fiberbragg grating adopts encapsulation with the temperature compensation function. The effects and the benefits of the invention are that the fiber bragg grating pressure sensor has high sensitivity, large measurement range, simple structure and long-term reliability, can real-timely monitor the measurement, and is beneficial to promote the application of the fiber bragg grating pressure sensor in mine mentoring.

The invention discloses a connecting structure and method for an externally-hung wallboard and a precast beam, and relates to the technical field of assembling construction of the externally-hung wallboard. The connecting structure comprises the externally-hung wallboard, the precast beam, L-shaped anchor plates A, L-shaped anchor plates B and a plurality of connecting pieces, wherein a mounting groove is formed in the connecting position of the externally-hung wallboard, the precast beam is horizontally arranged, and a step shaped like a Chinese character 'tu (convex)' is arranged at one end of the precast beam; the two sets of L-shaped anchor plates A are arranged at the upper inner right-angle position and the lower inner right-angle position of the mounting groove correspondingly, and the two sets of L-shaped anchor plates B are arranged at the upper step position and the lower step position of one end of the precast beam correspondingly; and the plurality of connecting pieces are connected between the L-shaped anchor plates A at the upper position and the lower position and the corresponding L-shaped anchor plates B. According to the connecting method, construction is conducted in sequence according to the structure. The connecting structure and method for the externally-hung wallboard and the precast beam have the advantages that stress of the step positions in the connecting structure for the externally-hung wallboard and the precast beam is greatly reduced, stability is improved, on-site mounting is rapid and convenient, and environmental friendliness and economy are achieved.

The invention discloses a low-temperature emergency release coupler. The low-temperature emergency release coupler comprises coupler bodies. A hoop is arranged on the coupler bodies. A release mechanism is arranged at one end of the hoop. The low-temperature emergency release coupler has the beneficial effects that the novel low-temperature emergency release coupler provided with the hoop release mechanism is provided, the first valve body and the second valve body are well fixed to each other, unnecessary release of the emergency release coupler can be avoided through the hoop, the release difficulty is avoided, safety release and security are achieved, the stress is concentrated, release is sensitive, rapid and effective, the disengaged hoop cannot generate potential safety hazards after release, a seal action is rapidly conducted, and leakage of a low-temperature medium is effectively avoided.

A damper opening and closing angle varying mechanism of a hinge comprises a blocking element, a connection element and a lever element which are in hinge fit with one another. A damper is arranged between the blocking element and the connection element. One end of the damper is rotationally arranged on the blocking element, and the other end of the damper abuts against the connection element. The connection element, the lever element and the damper are linked with one other relative to the blocking element when the hinge is opened or closed. When the hinge is closed by at least one certain angle, the lever element acts on the damper and drives the damper to slide on the connection element in a limited mode, the damper is compressed and generates damping force, and thus, damped closing of the hinge is achieved. Through the structure improvement, the damper opening and closing angle varying mechanism of the hinge has the characteristics that the structure is simple and reasonable, safety and reliability are achieved, production and implementation are easy, adjustment is fast, operation is convenient, the service life is long, practicability is high, and the opening and closing process is labor-saving, smooth, small in collision and low in noise.

The invention discloses a mold locking mechanism of a plastic injection molding machine, comprising a base, a thrust seat, a moving mold plate and a fixed mold plate which are arranged in sequence, wherein the centers of the base, the thrust seat, the moving mold plate and the fixed mold plate are positioned on the same central axis; a guide rod is fixedly arranged on the base; the thrust seat and the moving mold plate are sheathed on the guide rod; the fixed mold plate is fixedly connected with the end part of the guide rod; and a connecting rod group is arranged between the moving mold plate and the base. The mold locking mechanism is characterized in that the thrust seat is internally and fixedly provided with at least one oil cylinder; and a piston rod of the oil cylinder is fixedly connected with the moving mold plate. The mold locking mechanism has the advantages that the length of the whole mold locking mechanism is reduced, the structure of the whole mechanism becomes compact, and the whole volume is reduced; and when the moving mold plate and the fixed mold plate are positioned in a locking state, the included angle of the center connecting line of a first connecting rod and a second connecting rod and the horizontal surface of the central axis is more than 0 degree but less than or equal to 10 degrees. In the structure, the acting force of the mold locking mechanism on the mold tends to the center of the mold, the stressing of the mold is more concentrated, and the qualification rate of plastic products is effectively improved.

A damping buffer closing structure for a furniture hinge comprises a connecting arm, elastic pieces, a hinge cup seat, a damper, a transmission arm assembly and a poking assembly. The poking assembly is arranged on the transmission arm assembly. The damper is arranged on the connecting arm. The two ends of the transmission arm assembly are rotationally connected with the connecting arm and the hinge cup seat correspondingly. The connecting arm is hinged to the hinge cup seat to open and close the furniture hinge in a hinged manner through cooperation of the transmission arm assembly and the elastic pieces, and an included angle A is formed between the connecting arm and the hinge cup seat. The poking assembly comprises a poking element and an elastic poking element. The poking element is elastically and rotationally located to the transmission arm assembly through the elastic poking element. The damper is provided with an elastic damping element. The damper elastically stretches and contracts to slide on the connecting arm through the elastic damping element. By improving the structure, the damping buffer closing structure has the beneficial effects of being simple and reasonable in structure, excellent in performance, fast and convenient to assemble, long in service life, low in manufacturing cost, easy to produce, easy to implement, safe, reliable, high in practicability and the like.