39results about How to "Reduce the force required" patented technology

Hardenable and hardened dental compositions that include thermally responsive additives, and articles including such hardenable and hardened compositions, are provided. Upon heating, the hardened compositions are useful for reducing the bond strengths of orthodontic appliances adhered to tooth structures with the hardened compositions.

Hardenable and hardened dental compositions that include radiation-to-heat converters, and articles including such hardenable and hardened compositions, are provided. Upon irradiating, the hardened compositions increase in temperature, which can be useful for reducing the bond strengths of orthodontic appliances adhered to tooth structures with the hardened compositions.

Hardenable and hardened dental compositions, and articles including such hardenable and hardened compositions, are provided. The hardenable dental compositions include a thermally labile component including one or more thermally labile groups. Upon heating, the hardened compositions are useful, for example, for reducing the bond strength of orthodontic appliances adhered to tooth structures with the hardened compositions.

A keeper (12), a clamp (14), a heater strip (16) and a heated air diffuser (18) are provided for a slider insertion apparatus (10) which inserts sliders (28) on the interlocked profiles (20, 22) of a zipper (23). The heater strip (16) and/or the diffuser (18) heat the zipper (23) to a predetermined temperature prior to slider insertion. The keeper (12) aligns the slider (32) within the insertion area (34) with the activator with pusher (26) of the slider insertion apparatus (10). By changing the mounting of the zipper guide (28) and by actuating the clamp (14) during slider insertion, the zipper (32) indexes to the slider insertion apparatus (10) in alternate directions.

A cap structure for a zipper includes a cap and a resilient tab. The cap has a containing groove formed on the bottom surface thereof. At least one lug is disposed on the bottom surface of the containing groove. The bottom of the concave portion is lower than the top of the lug. Two sides of the cap each have a side wall. Each of the side walls has a recess opening that communicates with the containing groove. The resilient tap is disposed within the containing groove and the resilient tap abuts against the limiting portions. One end of the resilient tap has an aperture that corresponds to the lug. Therefore, the resilient tap and cap are combined to form the cap structure. Because the space for the resilient tap to bend is bigger, the force for pulling the slide of the zipper is smaller.

The invention relates to the technical field of paddy rice cultivation, and specifically relates to an environment-friendly high-yield paddy rice cultivation method. The method comprises the following steps of: step S1, seedling raising, step S2, ditching, step S3, field steeping, step S4, transplanting, step S5, fish fry stocking, step 6, top-dressing, step 7, field management and step 8, harvesting. Further, the used organic fertilizer comprises, by weight, 50-60 parts of duck manure, 10-20 parts of pig manure, 10-20 parts of pond sludge fertilizer, and 10-20 parts of humic acid. The adopted fish fries are grass carp fries, crucian carp fries, spotted silver carp fries, red-face carp fries and Taiwan loach fries. The method can be widely applied. With the paddy rice-fish cultivation manner, space is fully utilized, and yield is improved. The natural farmyard organic fertilizer is adopted, such that the paddy rice and fish are both green and pollution-free products.

The invention discloses a no-tillage planting method of narrow-row soybeans. The method is implemented by virtue of the following technical scheme: (1) firstly, after winter harvest of conventional flat planting corns in the last year, directly crushing corn straws by virtue of corn harvesting machinery; (2) under the condition that any soil tillage is not carried out in the winter of the next year, directly sowing soybean seeds on corn stubbles at a row pitch of 19 cm by using a 19 cm narrow-row-pitch soybean no-tillage drill planter; (3) sowing at a sowing density of 550000 plants/hectare, and selecting a semi-dwarf lodging-resistant variety; (4) controlling and eliminating field weeds by applying a chemical weeding technology before and after sowing, managing the travelling path of the machinery in fields by applying a field traffic control technology, and preventing soil from being compacted at the same time; and (5) controlling soybean diseases and insect pests by adopting a comprehensive prevention and control technology during breeding. According to the method disclosed by the invention, no-tillage and returning straw mulching technologies are used for protecting soil, reducing soil erosion, improving the field fertility, avoiding straw burning in the field from polluting the environment, and increasing and reducing C emission.

The invention provides a static balance valve and belongs to the technical field of valves, and the static balance valve is used for solving the problem that the handwheel of an existing static balance valve is hard to rotate, a valve core structure is complicated and the like. The static balance valve comprises a valve body the interior of which is provided with a hollow cavity, wherein the left and right sides of the valve body are respectively provided with a water inlet and a water outlet, a valve core is positioned in the valve body, and the inner end of a valve rod is connected with the valve core; the outer end of the valve rod stretches out of the valve body so as to be connected with a handwheel, the valve rod is provided with a press plate, and the valve core comprises a large valve core and a small valve core; the small valve core is fixedly connected with the inner end of the valve rod and is positioned in the large valve core, and the outer side face of the small valve core is tightly adhered to the inner side face of the large valve core; and the valve body is internally provided with a restoring spring, one end of the restoring spring props against the bottom of the valve body, and the other end of the restoring spring props against the large valve core. The static balance valve provided by the invention has the advantages that the operation is labor-saving, the problem that a large caliber valve has a small opening so as to surge is solved, and the like.

The invention belongs to the field of vascular stents, in particular to a covered stent. The frame body includes at least one keel. A membrane is arranged on that frame body to form a tubular structure. An adjusting member is arranged along the extension direction of the keel, one end of which is fixedly connected with the upper fixing part of the keel, the other part of which is a movable part movable in the longitudinal direction relative to the keel, and the other end of which can bend the keel under the action of an external force. A locking structure is arranged between the adjusting member and the keel, and is adapted to lock the relative position between the movable part and the keel. The covered stent has good universality and can be matched with the curved configuration of the curved aortic arch.

The invention relates to the technical field of constructional engineering, and discloses a building material cutting device for building engineering. The building material cutting device comprises a machine body, wherein a hydraulic telescopic rod is fixedly connected to the inner wall of the top end of the machine body, a cross beam is fixedly connected to the bottom end of the hydraulic telescopic rod, a first gear is rotatably connected to the bottom end of the cross beam, a sliding block is slidably connected to the surface of the cross beam, a motor is fixedly connected to the interior of the sliding block, a second gear is fixedly connected to the bottom end of the motor, a rotating rod is fixedly connected to the bottom end of the second gear, and a cutting blade is fixedly connected to the bottom end of the rotating rod. The automatic clamping device is formed by arranging a photoresistor, an illumination lamp, a magnet, a rotating disc, a triangular plate, a ball and a fixing frame, and has a telescopic buffering function, so that clamping of raw materials can be guaranteed, damage of clamping force to the raw materials can be reduced, and functionality and practicability of the device are improved.

The invention relates to a handbrake lever (14) for brake devices (4) of vehicle trailers (1). The pivotable handbrake lever (14) has a variable length and a telescopic grip part (21) having a variable extending length ?L. The grip part (21) has a positive guidance means (27) which controls the extending length ?L as a function of the rotational position of the handbrake lever (14) in such a way that the extending length ?L is at a maximum in the actuating position of the handbrake lever (14) and at a minimum in the release position.

A support structure for a heating or cooling system includes a plurality of projections designed to be capable of retaining one or more thermal elements positioned adjacent thereto. The projections are positioned so as to form a first set of substantially parallel undulating channels, each channel having one of the projections forming at least a part of the inner radius of each undulation, with each projection having a recess formed in a side wall thereof facing said channel. The undulations of the channel ensure that a thermal element positioned in the channel will make contact with the projections each time it has to bend around one, without requiring spacing of the projections to squeeze the thermal element. The thermal element can thus be held securely without any play (unwanted lateral movement) in a channel that is slightly wider than the thermal element. Recesses in the channels at the contact points also restrict movement in the vertical direction, thus preventing the thermal element from ‘popping out’ of the channel, while not requiring any restriction narrower than the thermal element.

The invention discloses a lower limb nursing and massaging device for the neurology department. The lower limb nursing and massaging device comprises an upper half ring and a lower half ring, one endof the upper half ring is movably connected with one end of the lower half ring through a hinge, and locking heads are arranged at the ends, away from the hinge, of the upper half ring and the lower half ring; and a plurality of massaging rods are evenly arranged on the inner wall of the upper half ring and the inner wall of the lower half ring, massaging heads are arranged at the top ends of themassaging rods, and an inner sleeve is arranged in a cavity defined by the upper half ring and the lower half ring and attached to the tops of the massaging heads. The massaging rods are evenly arranged on the upper half ring and the lower half ring, and therefore, lower limbs are nursed and massaged by 360 degrees in all directions; the lower limbs are massaged in a knocking mode through verticalmovement of the massaging rods, and the phenomena of itching, swelling and even skin scratching caused by rubbing type massaging are avoided; and in addition, the massaging force can be reduced through the inner sleeve, and therefore the lower limbs are massaged more evenly. The lower limb nursing and massaging device is simple in structure, easy to operate, not prone to faults and low in use cost.

The invention provides a pulling device which comprises a mounting part, a pulling control part and a pulled device fixing part, a groove for mounting a pulled object is formed in the upper surface of the mounting part, and the pulling control part and the pulled device fixing part are arranged at the left end and the right end of the mounting part. The pulling control part is used for controlling the position of the pulled device fixing part; one end of the pulled device fixing part is hinged to the pulling control part, the other end of the pulled device fixing part is a protrusion matched with a clamping groove of a pulled device, in the first state, the pulling control part controls the protrusion of the pulled device fixing part to be located in the clamping groove, and in the second state, the pulling control part controls the protrusion of the pulled device fixing part to be located in the clamping groove. The pulling control part controls the protrusion of the pulled device fixing part to be separated from the clamping groove. According to the invention, an object to be pulled is fixed and pulled, so that the force required for pulling the object is reduced, and the pulling time is shortened.