119results about How to "Economical to make" patented technology

A combined measurement device (100) for measuring current and/or voltage of an electrical conductor, comprises a supporting body (101), a current sensor (5) housed inside the supporting body (101) and a voltage sensor located at least partially inside the supporting body. A shielding (11) is positioned around the current sensor (5). The current sensor (5) and the voltage sensor are mutually arranged so as the shielding (11) shields at least partially both the current sensor (5) and the voltage sensor against external electric field disturbances.

The invention discloses a flexible face brick. The flexible face brick is prepared from the following materials in parts by weight: 35-45 parts of cement, 5-10 parts of fly ash, 20-30 parts of quartz sand with a fineness of about 60 meshes, 5-15 parts of quartz sand with a fineness of about 100 meshes, 1-3 parts of lignocelluloses, 1-5 parts of silica powder, 3-8 parts of talcum powder, 1-5 parts of calcium oxide, 1-3 parts of sodium silicate, 0.5-1 part of antalkaline, 2-3 parts of acrylic rubber powder and 2-5 parts of an iron oxide pigment. The flexible face brick is prepared in the following steps of: mixing the materials in a formula; adding 28 parts of water, usually deionized water to 100 parts of materials; adding powder into the water; pulping a mixture into slurry with a homogenizer; uniformly coating 2/3 slurry to a die according to a proportion of about 3kg of slurry per square meter; paving at least one layer of 4# alkali-proof fiberglass gridding cloth; then uniformly coating the remaining 1/3 slurry; and finally removing scratches with a blacking brush.

Toroidal fluxgate current transducer comprising a ring shaped fluxgate sensing unit (6) comprising a ring-shaped support (40), a saturable magnetic core (38) mounted on the support (40), an excitation coil (44) wound around the support and saturable core and a magnetic shell (32) mounted around the excitation coil, ring-shaped support and saturable core. The support is ringed-shape and comprises terminals (50,48) fixed to the support, a first pair of said terminals connected to ends of the excitation coil, and a second pair of said terminals connected to ends of a secondary coil of the current transducer.

This invention relates to an anti-scale water treatment system, composition and related methods. The system suppresses hard scale formation by releasing small amounts of transforming agent into water.

A locking assembly is for the trip bar of a circuit breaker. A pivotal trip lever is coupled to the trip bar, in order to move therewith. The locking assembly includes: a locking mechanism, such as a commercially available key lock, with a pivotal element; a mounting plate, which receives the key lock and secures it to the circuit breaker; an extension member coupled to the pivotal element; and a flexible linkage interconnecting the pivotal trip lever and the extension member. The key lock has locked and unlocked positions corresponding to the trip bar of the circuit breaker being locked and unlocked, respectively. The flexible linkage is interchangeable or universally employable with a variety of commercially available locks, in order to lock the trip component of a wide variety of electrical switching apparatus.

The invention provides a Nb and N composite reinforced 400 MPa grade steel bar. The Nb and N composite reinforced 400 MPa grade steel bar is prepared from the following components in percentage by mass: 0.20-0.25% of C, 1.25-1.60% of Mn, 0.008-0.04% of Nb, 0.006-0.012% of N, less than or equal to 0.35% of Si, less than or equal to 0.045% of P, less than or equal to 0.045% of S, the balance of ironand inevitable impurity elements. The product yield strength of a ribbed steel bar finished product can stably reach more than 420 MPa, and the good anti-seismic performance is achieved.

The invention relates to a structure improvement of volumetric blade pump, which comprises a pump chamber formed by stator and end cover, and a rotor mounted inside the pump chamber, wherein the radial groove of rotor is mounted with blades that sliding matched; the inner side of the stator has radial sealing groove mounted with sealing blade that radial sliding to contact with rotor; the inner side of two end covers are made with sealing annular groove mounted with sealing ring that axially sliding to contact the rotor. Therefore, the invention can avoid pressure liquid leaked via the space between blade and stator, or avoid pressure liquid leaked via the space of bearings, to reduce the accuracy demand.

The invention provides a method for preparing polypropylene with high melt strength. The method comprises the following steps of 1) raw material refining; 2) polymerization reaction; 3) flash evaporation deactivation and 4) filtration and packaging. The method for preparing the polypropylene with the high melt strength is an industrial grade method that in a batch liquid phase bulk polymerizationtechnology, a method of one step in situ is adopted to directly perform polymerization in a 12-23-cubic meter polymeric kettle to prepare polypropylene powder with the high melt strength.

The invention relates to an indicator for a device for dispensing a liquid or powdery product, said indicator comprising an actuating element (1) that can be axially displaced between an idle position and an actuating position, a rotatable counting element (5), and a driving element (6). According to the invention, the driving element (6) transforms an axial displacement of the actuating element into a rotary displacement of the counting element (5), the counting element (5) comprising teeth (9) which co-operate with elastic means (7, 8) of the driving element (6). Said elastic means (7, 8) are provided with at least two flexible tabs (7, 8), at least one first flexible tab (7) co-operating with the teeth (9) of the counting element (5) in order to rotate the counting element (5) in a counting direction when the actuating element (1) is displaced from the idle position thereof towards the actuating position thereof, and at least one second flexible tab (8) co-operating with the teeth (9) of the counting element (5) in order to rotate the counting element in the same counting direction when the actuating element (1) returns from the actuating position thereof to the idle position thereof.

The invention relates to a capacitive fill level sensor (10) for measuring the fill level (H1, H2; H1', H2') of a medium (18) in a container (14), having an electrode unit (12), which contains a strip-shaped measurement electrode (22), a strip-shaped counter electrode (24) and a strip-shaped shielding electrode (26, 28, 40), the shielding electrode (26, 28, 40) at least partially surrounding the measurement electrode (22). The capacitive fill level sensor (10) according to the invention is characterized in that a first AC voltage source (60) having a predefined frequency and amplitude is provided, to which the shielding electrode (26, 28, 40) is connected such that a shielding capacitor (54, 56, 58) formed between the shielding electrode (26, 28, 40) and the measurement electrode (22) has a shielding capacitance that is proportional to the length of the shielding electrode (26, 28, 40), that a second AC voltage source (68) of equal frequency and a predefined second amplitude is provided, the second amplitude being in phase opposition to the first amplitude, to which AC voltage source the counter electrode (24) is connected, such that a measurement capacitor (52) formed between the counter electrode (24) and the measurement electrode (22) has a measurement capacitance that is proportional to the fill level (H1, H2; H1', H2'), and that the measurement electrode voltage (72) present at the measurement electrode (22) is used to determine the fill level (H1, H2; H1', H2').

The invention discloses a device for manufacturing a cement paste test-piece and an application method thereof. The device comprises a bottom mold and an upper mold; two baffle plates are integrally molded in the cavity of the bottom mold; the cavity of the bottom mold is divided into three mutually independent test-piece molds by the two baffle plates to form a triple test mold with a bottom; each test-piece mold cavity is cube mold cavities with the same size, and an air inlet is formed in the bottom surface of each test-piece mold cavity; the upper mold is detachably hermetically connectedwith the upper opening of the bottom mold. The application method of the device comprises assembling a device, painting machine oil, collecting cement paste, injecting the cement paste into the bottommold, molding a test-piece body, standing the test-piece body, demolding the test-piece body and maintaining the test-piece body to a test age. By using the cement paste test-piece provided by the invention, the cement paste can be molded by one-time casting, with no need to secondarily replenish slurry, after the test-piece is cured, the secondary treatment is not needed either; the applicationmethod is simple and convenient, convenient to operate, and low in manufacturing cost of the test-piece.

A hollow cannula (4) having a piercing tip (5) for piercing a piercing site, said piercing tip (5) being provided with an opening (6), said opening (6) defining a peripheral edge (7) that extends about said opening (6) and has a distal axial end and a proximal axial end, said distal axial end of said peripheral edge (7) forming the distal axial end (59) of the piercing tip (5), said distal axial end (59) of the piercing tip (5) being disposed on the longitudinal central axis (A) of said cannula (4), said piercing tip (5) having a rounded external shape in the radial direction and said distal axial end (59) of said piercing tip (5) having a rounded shape in the axial direction.

The invention discloses a housing for receiving and installing an operation panel and/or a computer with an operation panel. The invention provides a plastic housing for an operation panel, a display or a computer with an operation panel, which has indispensable stability in the case of openning with a large window. The housing (1) has a double-walled frame, which consists of inner (3) and outer (4) walls. The inner (3) and outer (4) walls run substantially parallel to each other and interlink through bracing/ribbing(5a, 5b). On the front side, a double-walled frame (2) has a screen (9). The bracing/ribbing can run between the walls at right angles or at a 45 deg. degree angle to the walls. Through the bracing/ribbing between the inner (3) and outer (4) walls, the double-walled frame (2) obtains a higher stability.

The machine for the production of ice, comprises a tubular pipe to form the ice, covered by a refrigerator group evaporator, and having an auger inside to move the ice towards the delivery outlet, associated with a ring nut having a plurality of drawing holes arranged angularly spaced along a circumference, the delivery outlet of the tubular pipe is associated with the terminal inlet part of conveyor means of ice, having a substantially upward axial extension and a terminal outlet part positioned at a level substantially higher than the top of the machine.

The utility model discloses a bamboo-wood composite carriage baffle for a truck as well as a manufacturing method of same. The surface layer of the baffle is made of full longitudinal thin bamboo curtain laminated timber, and the core layer of the baffle is a Chinese fir finger-joint board; a surface board has the advantages of higher mechanical property, small water sucking expansion ratio, good abrasive resistance, excellent appearance and no phenomena of insect damage, crack, deformation and the like; and a core board is made of timber with lower density. The bamboo-wood composite carriage baffle for the truck integrates the properties of a bamboo plywood and a wood plywood, and the properties of the baffle are superior to the properties of a hardwood plywood and a common bamboo plywood; and the bamboo-wood composite carriage baffle has the advantages of light weight, good thermal insulation, good sound insulation, high shock resistance, and low manufacturing cost.

The invention discloses a rectal drug delivery apparatus for the pediatric department. The rectal drug delivery apparatus comprises an injection device and a drug delivery device. Protrusions are arranged at the bottom of the injection device, first grooves are formed in the inner wall of the drug delivery device, the protrusions at the bottom of the injection device are cooperatively connected with the drug delivery device through the first grooves, the outer side of the injection device is provided with a housing, and the injection device comprises an injection piston and an injection tube;the injection piston is provided with a push rod, the injection tube is provided with a transparent sealing strip, scale lines are arranged on the transparent sealing strip, the drug delivery device comprises an integrally formed drug delivery tube and a drug delivery hole formed in the bottom of the drug delivery tube, and a baffle of a ring structure is arranged at an opening of the drug delivery tube and integrally formed with the drug delivery tube; the housing can prevent the situation that the injection device slides down due to hand slip, the baffle on the top of the drug delivery tubeprevents the drug delivery tube from entering the rectum of a child, the outer surface is smooth, and damage caused by a sharp head part to the rectum of the child is avoided. The rectal drug deliveryapparatus is simple in using method, excellent in performance and suitable for application and popularization in society.