1430 results about "Large head" patented technology

The invention provides a reciprocating type three-cylinder plunger pump for an oil and gas field. The reciprocating type three-cylinder plunger pump comprises a gear box assembly, a power end assemblyand a hydraulic end assembly which are transmitted in sequence; and the hydraulic end assembly comprises a disc root and a plunger, the power end assembly comprises a crankshaft, a connecting rod, asliding rail and a crosshead, power is transmitted from the crosshead to the plunger, a pull rod and a fender are arranged between the plunger and the crosshead, the pull rod is fixed on the cross head, the plunger is fixed to the pull rod, the fender is located between the pull rod and the plunger and fixed with the plunger, and the outer diameter of the fender is larger than that of the plungerand the pull rod. The reciprocating type three-cylinder plunger pump can solve the problems that a working medium in a hydraulic end assembly in the prior art is poured into a power end assembly alongthe plunger, a packing is inconvenient to replace, and a connecting rod large-head bearing bush is insufficient in lubrication and the like.

A connector structure with a detachable mounting tube comprises a mounting pipe with an inner sliding pipe detachably secured to an end of a connector. The connector structure not only can be provided for insertion of an ordinary screwdriver head to carry out screwing and unscrewing operation. Further, when the mounting tube is detached from the connector, a special tool head with a big head and a short length can also be inserted in the connector, thus overcoming the conventional technique bottleneck of needing two different connectors. Besides, the mounting tube is detachable from the connector, for the sake of simplification, the sliding pipe and the mounting tube are integral with each other.

An implant assembly for proximal femur fracture comprises of a targeting device and intramedullary nail having plurality of proximal holes directed towards head and neck of femur wherein the axis of the holes makes an ante version angle of about 5° to 20° with the horizontal plane and at the same time axis of plurality of distal holes making 90° angle to longitudinal axis of said nail that holds the femur wherein said nail has reducing cross section area from thigh end to knee end with grooved knee end with anterior curvature even in short length version, plurality of proximal sliding hip pins with smooth shaft for collapsibility, triflanged end with mores taper to hold proximal femur, large head and washer to get impaction and plurality of distal locking screw to hold distal fragment of femur, optional buttress plate and barrels supporting lateral cortex to get controlled limited guided collapse.

In a tunnel magnetoresistance effect element comprising a tunnel multilayered film having a tunnel barrier layer, a ferromagnetic free layer and a ferromagnetic pinned layer such that the tunnel barrier layer is held between the ferromagnetic free layer and the ferromagnetic pinned layer, three indexes representing a surface roughness state of the tunnel barrier layer are set such that Ra<=1 nm, Rmax<=10 nm and Rrms<=1.2 nm, wherein Ra is one of the three indexes and representing the center line average roughness, Rmax is one of the three indexes and representing the maximum height, and Rrms is one of the three indexes and representing the standard deviation roughness. Thus, the tunnel magnetoresistance effect element exhibits improved characteristics, particularly, a large head output.

A replacement assembly of a handle tool comprises a handle having an axial receiving hole; an adjust unit; the adjust unit being formed with a resisting block; an opener head; the opener head having a buckling groove; a fixing unit installed at one end of the receiving hole for confining the adjust unit; the fixing unit having a positioning hole for receiving an opener head; the fixing unit having at least one through hole which is communicated to the positioning hole; wherein the resisting block enters into the buckling groove of the opener head from the through hole of the fixing unit. The fixing unit has a large head and a small waist; the adjust unit is engaged to the waist and is confined by the head to be combined with the handle.

Antimicrobial compositions that provide enhanced immediate and residual anti-viral and antibacterial efficacy against rhinovirus, rotavirus, coronovirus, respiratory syncytial virus, Gram-positive bacteria, Gram-negative bacteria and combinations thereof. More specifically, antimicrobial compositions comprising an organic acid or organic acid mixture and a short-chain anionic surfactant having at least one of a large head group; a branched alkyl chain and an unsaturated alkyl chain. Further, products incorporating the antimicrobial compositions of the present invention and methods of using the antimicrobial compositions and products are disclosed herein.

Therapeutic antimicrobial compositions and methods for providing enhanced immediate and residual anti-viral and antibacterial efficacy against rhinovirus, rotavirus, coronovirus, respitory syricytial virus, Gram-positive bacteria, Gram-negative bacteria and combinations thereof. More specifically, therapeutic antimicrobial compositions comprising an organic acid or organic acid mixture and a short-chain anionic surfactant having at least one of a large head group; a branched alkyl chain and an unsaturated alkyl chain, and therapeutic methods of use thereof.

The invention discloses a technical method for culturing gastrodia elata at one time under forest, which comprises gastrodia elata seed production technology, land selection and preparation technology, seed treatment technology, seeding technology, nutrient regulation and management technology and gastrodia elata harvest method. The method has the advantages of capacity of not struggling for land with crops, short production cycle, manual labor and bacteria conservation, capacity of avoiding variety degeneration and effectively preventing large head and small tail of the gastrodia elata body, and obvious ecological benefit, economic benefit and social benefit.

A mechanical broadhead including rearwardly deploying and/or sliding blades. The broadhead includes a ferrule defining a bore joined with a penetrating tip. A connector body, such as a carriage element or a pin, is slidably and moveably disposed within the bore, distal from the tip. One or more cutting blades is joined with the connector body. The connector body moves together in unison with the cutting blades as they expand from a retracted, in flight mode to a deployed, target penetrating mode. The connector body and blades can be joined with the ferrule so that the broadhead converts from a deployed mode to an unbarbed mode to facilitate broadhead removal. Optionally, the broadhead can include an internal retainer element that is resilient and durable enough to be used for multiple deployments. A related method of operating the broadhead also is provided.

The metal pile head set inside the sunken tube features the conic shape with large-headed horizontal pin on the inner wall. By means of the metal pile head, the sunken tube and corresponding piling method, the diameter ratio between the enlarged pedestal and the pile column may reach 1.5, and the routine enlarged pedestal has area up to 2.3 sq m and bearing capacity up to 270 T. Owing to the setting sunken tube, dry soil taking and air sucking, the pedestal enlarging process can clean the bottom of pile to reach the effective factor of 1.00. The existence of the sunken tube can ensure the reliability of the enlarged pedestal, and the bottom may be enlarged sufficiently and accurately.

Systems and methods for reducing head media spacing (HMS) from about 100 Angstroms to about 65 Angstroms or less, without substantial reductions in the carbon overcoat or lubricant thickness. A protruding feature extends above the actuated portion of the air bearing surface and generally covers the read-write sensors. The protruding feature can either be static or thermally actuated. The protruding feature is small enough to engage with the lubricant without causing large head media disturbances and lubricant pickup and re-distribution or preventing contact detection. The protruding feature is also extremely small relative to the size of the actuated portion of the air bearing surface, but large enough to provide a wear and corrosion resistance to head media spacing sensitive features.

A twist off tamper-proof fastener having an elongate flexible strap defining a plurality of parallel adjacent transverse teeth in opposing planar surfaces. First end portion of elongate strap is tapered to a rounded tip for insertion through a “T” slot defined in a dimensionally larger head portion carried at opposing end of the elongate strap. A fixed tooth and plural angulated teeth carried by a flexing arm irremovably engage with the teeth defined in the elongate strap. The head portion is elliptic with opposing spaced apart rounded ends and opposing planar sides to facilitate grasping and twisting by a user, and for identifying indicia. A circumferentially extending notch is defined in the elongate strap immediately adjacent the head portion. Twisting the head portion creates shearing forces that are focused at the circumferential notch breaking the fastener and allowing removal without tools.

The invention discloses a Chinese medicinal composition for treating hypertension, hyperlipidemia and hyperglycemia, which is prepared from the following raw material medicaments: kudzuvine root, root of red-rooted salvia, angelica dahurlica, ligusticum sinense oliver, flos chrysanthemi, sea-ear shell, cassia seed, astragalus, szechwon tangshen root, large-headed atractylodes rhizome, poria, liquoric root, platycladi seed, Chinese angelica, Chinese magnoliavine fruit, szechuan lovage rhizome, ginkgo leaf, tea leaf and raw hawthorn fruit. The Chinese medicinal composition has the good effects of reducing blood pressure, blood fat and blood sugar, preventing and treating arteriosclerosis and improving blood circulation, and has excellent prevention and treatment effect on cardiovascular and cerebrovascular diseases.

The invention discloses a medicament for stimulating the appetite of children. The medicament consists of the following components in parts by mass: 28-33 parts of dangshen, 28-32 parts of poria, 25-30 parts of large-head atractylodes rhizome, 12-16 parts of dried orange peel, 28-32 parts of hyacinth bean, 26-30 parts of Chinese yam, 30-33 parts of lotus seed, 18-22 parts of amomum fruit, 26-33 parts of coix seed, 16-20 parts of platycodon root, 10-12 parts of cassia bark, 27-32 parts of chicken gizzard membrane, 27-32 parts of massa medicata fermentata fujianensis, 30-35 parts of fructus crataegi and 26-30 parts of malt. All components are ground into powder, and the powder is taken 2-3 times every day, each time for 5-8 grams. A treatment course lasts for seven days, and the medicament is generally required to be taken for 1-3 treatment courses according to the medicament taking effect. The medicament has quick response. In general, a remarkable effect can be achieved after one treatment course, the appetite of a child is improved remarkably, and an anorectic child can basically take food actively. After the medicament is taken, the phenomena of food picking and food preference of a child can be improved remarkably.

The invention provides a construction method of a concrete supporting structure, comprising the following steps: step (101) of excavating working surface, step (102) of injecting a first layer of concrete retaining wall, step (103) of arranging hole sites, step (104) of pore-forming, step (105) of borehole cleaning, step (106) of installing a supporting structure, step (107) of pressure slip casting, step (108) of hanging and paving steel mesh sheets, step (109) of injecting a second layer of concrete pavement, step (110) of concrete pavement backside back fill grouting, step (111) of concrete pavement curing, the step of using drilling equipment to drill at preset design positions in the step (104) of pore-forming and the step of using a hole extruding and chambering device to expand bore diameter of boreholes when drilling is to reach preset depth to form a supporting structure with a big-head tail end and with diameter being larger than bore diameter. With the design adopted, reinforcing capacity of the concrete supporting structure can be fully enhanced.

The anchor rod construction process includes the steps of: assembling the detachable anchor rod assembly with anchor ribs to the front end of drilling rod; rotating the drilling rod to set the said anchor rod assembly into soil and to required position while drilling hole; depositing solidifying liquid via the hollow passage in the drilling rod to the bottom of the hole to form large head for anchoring; and separating the anchor rod assembly from the front end of the drilling rod so as to withdrawing the drilling rod while retaining the anchor rod assembly inside the hole.

The invention relates to a fluid pulse spraying device, which comprises a shell and a piston. The piston enables a shell cavity to be separated into a water inlet cavity and a compression cavity, the water inlet cavity is connected with a fluid-power pressure source such as a water pump through a water inlet channel, a compression cavity water replenishing check valve and an elastic water stopping ring are arranged on the piston, a compression spring, a tower-shaped spring, a spheroidal elastic valve body and a spraying hole are arranged in the compression cavity, the compression spring is sleeved outside the tower-shaped spring, one end of the compression spring abuts against the piston, the other end of the compression spring abuts against the inner wall of the shell adjacent to the spraying hole, the large head end of the tower-shaped spring is fixed on the piston, the small head end of the tower-shaped spring is fixed on the spheroidal elastic valve body, and the curved surface ofan water inlet of the spraying hole is coincided with that of the spheroidal elastic valve body. The fluid pulse spraying device is simple in structure, free of electric drive and control, low in cost, convenient to use and particularly suitable for a pulse micro spray irrigation system, substitutes for a pulse solenoid valve deashing device of a bag-type dust collector, and can overcome the defect that a pilot hole is easy to block and be out of order, membrane opening time is long and membrane is short in service life.

The invention discloses a Chinese medicinal compound extract for whitening and removing freckles and a preparation method thereof, relates to a medicament for whitening and removing the freckles, and solves the problems of slow curative effect, low cure rate and inconvenient administration of Chinese medicaments for a long term in the treatment for chloasma at present. The Chinese medicinal compound extract for whitening and removing the freckles is prepared from bupleurum, Chinese angelica, white paeony root, dogwood, large-head atractylodes rhizome, Indian buead, szechuan lovage rhizome, peach seed, white muscardine silkworm, roasted ginger, mint and radix glycyrrhizae preparata; and the product is prepared by adopting carbon dioxide supercritical extraction technology. The method has the advantages of simpleness and convenient operation, and can highly enrich active ingredients. Therefore, the bioavailability is improved; the pharmacological activity is obviously enhanced; and the obtained product has small volume and does not contain solid impurities which cannot be emulsified. The Chinese medicinal compound extract effectively suppresses the activity of tyrosinase and melanogensis, removes or improves the chloasma, and responds within about one month, and the cure rate reaches 99.98 percent. The Chinese medicinal compound extract can be used as an active ingredient for directly preparing an external medicinal preparation and cosmetics for whitening and removing the freckles, is easy to carry, and is convenient to use.

The invention discloses skin-protecting and acne-removing Chinese medicinal facial mask powder, which relates to an acne-removing and skin-protecting Chinese medicine. The skin-protecting and acne-removing Chinese medicinal facial mask powder comprises large-head atractylodes rhizome, common bletilla tuber, Japanese ampelopsis root, white poria, white paeony root and natural pearl powder. The skin-protecting and acne-removing Chinese medicinal facial mask powder is characterized in that: the facial mask powder comprises the following components in parts by weight after components are added: 2-6 parts of large-head atractylodes rhizome, 2-6 parts of common bletilla tuber, 5-15 parts of Japanese ampelopsis root, 5-15 parts of white poria, 5-15 parts of white paeony root, 5-15 parts of natural pearl powder, 2-6 parts of bitter almond kernel, 2-6 parts of giant typhonium rhizome, 10-30 parts of pearl barley, 10-30 parts of mung bean, 10-30 parts of soybean, 5-15 parts of edible talc powder, 5-15 parts of hungaian morningglory root, 5-15 parts of larva of silkworm with batrytis, 5-10 parts of ginkgo, 5-15 parts of tribulusterrestris and 5-15 parts of common perilla. The facial mask powder is prepared by the following steps of: smashing each component into coarse powder of 100 meshes respectively; proportioning coarse powder, and stirring; smashing into fine powder of 200-500 meshes; cooling to the normal temperature; and packing the fine powder. The skin-protecting and acne-removing Chinese medicinal facial mask powder has the effects of effectively repairing skin corium broken collagen fibers, promoting blood circulation by removing blood stasis, diminishing inflammation, resisting bacteria, and softening and relieving the formation of acne marks, acne scars and pigmentation.

A method for using laser to premachine the cracking slots before dividing connecting rods from each other includes such steps as fixing the laser cutting head above the position to be machined, which is near the hole on big end of connecting rod, regulating the incident angle of laser beam to 0-70 deg.C, turning on laser device, vertically moving the laser cutting head to machine the cracking slot to predefined depth, and repeating said steps to machine another cracking slot at another end of aconnecting rod.