90results about How to "Low tech" patented technology

A two-stage space vehicle is provided for achieving low earth orbit that includes a carrier and an orbiter. The carrier has a large airfoil area relative to its dry weight, and the thrust of the rocket engine is controlled such that the carrier achieves a launch altitude and speed for the orbiter without exceeding a wingloading pressure beyond 3,500 Pa., which allows the carrier to be inexpensively constructed. Liquid propellant for the rocket engine is advantageously stored within the relatively large airfoil of the carrier, which is preferably a delta wing. The ratio of airfoil area to dry weight is about 33 m2 per ton, which allows the carrier to descend and land after launching the orbiter with low wingloading on the order of 300 Pa.

This invention relates to headgear for help in protecting the wearer against facial injury, especially skin damage from the elements and in particular sunburn and windburn, the headgear comprising a fabric wall which substantially surrounds the face and neck of the wearer and has in it an aperture for locating adjacent the wearer's eyes to allow vision. The wall is lightweight, flexible and porous and has stiffening means at the periphery of the aperture so as to support the aperture in open configuration in a vision-facilitating position adjacent the eyes of a wearer in use, and the wall provides protection to the wearer against ingress of particulate projectiles from around the transparent first membrane, as well as a degree of shielding from UV radiation while remaining lightweight and breathable.

The present invention is in related to an adjustable cup-holder, which is able to hold different types of cups. An adjustable cup-holder comprises: a bottom; a handle, a lower end of the handle connecting the bottom; and a horizontally flexible ring; wherein the flexible ring and an upper end of the handle are in an adjustable connection for different dimensions of cups.

To mitigate global climate change, a portfolio of strategies will be needed to keep the atmospheric CO2 concentration below a dangerous level. Here a carbon sequestration strategy is proposed in which certain dead or live trees are harvested via collection or selective cutting, then buried in trenches or stowed away in above-ground shelters. The largely anaerobic condition under a sufficiently thick layer of soil will prevent the decomposition of the buried wood. Because a large flux of CO2 is constantly being assimilated into the world's forests via photosynthesis, cutting off its return pathway to the atmosphere forms an effective carbon sink.

A panel with a bracket is used to install a component to a wallboard. The panel is inserted into an opening to a wallboard, and the junction between the panel and the wallboard is taped and spackled so that the wallboard and panel appear to be a single object. When the component is fully coupled to the bracket, the front of the component is slightly recessed from the front of the panel. A component cover could then be inserted into the newly created recess so that the component appears to be completely flush with the wallboard.

The invention provides a method for preparing composite modified starch for biodegrading plastic, comprising: adding an activator in dry starch, for pretreatment under 95-100 DEG C for 30min; adding an esterification reagent into the starch after activation, for making esterification reaction under 120-125 DEG C for 1h, wherein the whole press is carried out in a solid phase state; adding a solid coupling agent into the material after esterification, for making a phase coating reaction in case of stirring under 125-130 DEG C for 40-50min, wherein the whole press is carried out in a solid phase state; cooling the material until to room temperature, screening the material with 60 mesh sieves, and then packaging the material to obtain the finished product.

A relatively high-speed, high-efficiency CMOS two branch driver core that may operate under relatively low supply voltage may include thin oxide CMOS transistors configured to generate rail-to-rail output swings larger than twice a supply voltage and without exceeding safe operating area limits. Each of the two branches may include two stacked CMOS inverter pairs configured to drive a respective load capacitance coupled between respective CMOS inverter outputs, in phase opposition to the other branch. A pre-driver circuit input with a differential modulating signal may output two synchronous differential voltage drive signals of a swing of half of the supply voltage and DC-shifted by half of the supply voltage with respect to each other and that may be applied to the respective CMOS inverter inputs of the two branches.

The invention provides an ecological utilization method for purifying the rural household sewage and sewage generated by aquatic bird breeding. The method comprises the following steps: preprocessing rural household sewage and sewage generated by aquatic bird breeding, introducing preprocessed sewage into an ammonification and phosphorization biological tank, wherein the ammonification and phosphorization biological tank contains sludge, which comprises bacillus and pseudomonas, and the microbes can convert the organic nitrogen and organic phosphorous in sewage into ammonia nitrogen and inorganic phosphorous; introducing the sewage into a phytase mixing tank, processing sewage in the phytase mixing tank; then introducing the sewage into a ditch, wherein in the ditch, optical fertilizer type aquatic vegetables are planted in the ditch, a greenhouse is arranged over the ditch, the greenhouse is covered by a light conversion membrane, which can absorb the UV light in sunlight and convert UV light into blue light and red light, and the top of the greenhouse is provided with a solar-LED high efficient vegetable light source system for supplying light to the vegetable; and finally introducing the effluent from the ditch into a biological tank, which has aquatic plants and animals. The processed water can be used for irrigation or reusing. The provided method organically combines sewage treatment and vegetable planting. The organic nitrogen and phosphorous in sewage can be decomposed and converted into fertilizer for vegetables high efficiently, and economic benefit can be generated.

A method of repurposing dual-paned insulated glass window units (IGUs) that would otherwise be put to waste into thermal solar panels capable of generating hot water for a residence or other structure. The method includes the steps of removing an existing IGU, disassembling and cleaning the IGU, and reassembling the IGU with a new silicon seal and fluid channels for connection to a looped solar heating system. The space between the panes may be filled with a liquid to be heated by solar radiation, or alternatively by a conduit which transports the liquid through the panel.

A sign attached to the back of a poker or blackjack dealer's chair to provide ease of visibility for a casino's floor staff and players waiting to enter a gaming area as to the availability of a vacant seat and as to the betting limits associated with the table, with the sign being operated by a pull-cord arrangement at the dealer's chair.

The invention relates to an electric eccentric screwdriver, and belongs to the field of electric appliance tools. The electric eccentric screwdriver comprises a hollow screwdriver handle, a hollow L-shaped screwdriver rod is coaxially and fixedly connected to the front end of the screwdriver handle, a front baffle and a rear baffle are arranged in the screwdriver handle so as to enable a cavity ofthe whole screwdriver handle to be divided into a front cavity, a middle cavity and a rear cavity, a power control part is arranged in the middle cavity, and comprises a motor, the motor is arrangedon the front baffle, and a rotating shaft of the motor penetrates the front baffle to be coaxially mounted on a shaft hole in one side of the front baffle. The screwdriver is reasonable and novel in structural design, and suitable for being used for screw dismantling and mantling of a screw hole with sheltering on the upper portion, and for the screw hole with sheltering, the L-shaped screwdriverrod can exert the maximum effect.

The invention provides a kind of method for artificially inducing the new aerial root germination of dragon fruit, comprising the steps of: (A) selecting healthy plants born in 1-2 years, peeling off the main stem of dragon fruit at the position of 30-40cm from the ground After the meat is taken out, disinfect the peeled area; (B) Wrap the peeled area with wet cloth, and spray fertilizer after the aerial roots germinate. The method for artificially inducing the new aerial root germination of dragon fruit of the embodiment of the present invention is by selecting suitable plant and adding suitable treatment, the step of spraying liquid medicine is combined, finally reached the growth of the organ that increases the absorption of nutrition of dragon fruit, also improves The growth of branches of dragon fruit is increased, the output is increased, the planting area of ​​dragon fruit is expanded, the planting efficiency is finally improved, and certain economic benefits are created. It is worthy of wide recommendation and application, and has certain reference value.

The embodiment of the invention discloses a novel anti-theft anti-looseness bolt and nut locking device. The device comprises a bolt, an anti-looseness nut is connected to the side wall of the bolt ina screwed mode, a locking mechanism is arranged at the lower end of the anti-looseness nut, a lock bolt hole is formed in the position, corresponding to the locking mechanism, of the side wall of thelower end of the bolt, and a locking assembly for limiting the locking mechanism is arranged in the lock bolt hole. According to the novel anti-theft anti-looseness bolt and nut locking device, the locking assembly is arranged, the locking assembly can be used in a mode of cooperating with the locking mechanism, when the anti-looseness nut is screwed on the bolt, a lock bolt body on the locking assembly can be embedded into the tooth surface to form a locking structure, therefore, the phenomenon that the bolt is easily loosen due to strong impact cannot occur, and then the situation that a large amount of time is consumed for maintenance is avoided; and meanwhile, when the locking structure is formed, the lock bolt body is always embedded into the tooth surface so that reverse rotation cannot occur to the locking nut again, then the anti-theft effect is achieved, the structure is compact, the flexibility is high, and mounting is convenient.