411results about How to "Little wear" patented technology

The present invention relates to a device for storing and / or mixing and / or injecting cements, especially bone cements. The device includes a tube having a longitudinal axis, a front end with an outlet opening, a rear end; and an internal cylindrical cavity having a first end and a second end; a locking mechanism detachably connected to the front end of the tube so that the outlet opening can be sealed; and a lid detachably connected to the rear end of the tube; the lid having a borehole extending therethrough. The device also includes: a mixer having a mixing shaft sized and configured to extend through the borehole formed in the lid and a mixing tool at one end thereof, the mixer being axially and rotationally moveable inside of the cavity; a driving mechanism connected to the mixer shaft so that the mixer can be axially and rotationally moved with respect to the tube; and a first restraining mechanism for limiting the axial movement of the mixer with respect to the tube so that the a minimum distance A remains between the front face of the mixing tool and the front wall of the cavity; wherein the cylindrical cavity has a diameter D and the mixing tool has a maximum dimension X such that X is less than D.

The invention relates to a low-ratio biomass circulating fluidized bed boiler and a combustion method thereof, relating to a circulating fluidized bed boiler and a combustion method thereof and solving the problems of difficult feeding, grate slagging, bed material coking, tempering and output reduction, and the like existing in the operation of traditional grate furnaces and circulating fluidized bed boilers. A middle air chamber corresponds to the middle of a dense-phase area at the lower part, lateral grid plates are arranged between a lateral air chamber and the dense-phase area at the lower part, and a medium-temperature steam-cooled cyclone separator is arranged at the joint between a flue shaft at the tail part and a health outlet of a boiler body, respectively communicated with the flue shaft and the health outlet and communicated with the dense-phase area at the lower part through a material returner. The method adopts a negative-pressure feeding manner so that the fluidization air velocity of a high-speed area of the dense-phase area at the lower part is 4-5 m / s, the fluidization air velocity of a low-speed area is 1.5-2.0 m / s, the temperature of the dense-phase area at the lower part is 650-780 DEG C, and the material circulation ratio is below 10. The invention is suitable for the biomass circulating fluidized bed boiler for an electric power plant.

Machining and cutting tools including, but not limited to, rotary drill bits, mining tools, milling tools, wood shredders, reamers and wire dies formed with at least one substrate having a layer of polycrystalline diamond disposed thereon. The polycrystalline diamond layer may be generally described as a polycrystalline diamond compact (PDC) or PDC layer. The PDC may be formed by using an intermetallic aluminide catalyst. One example of such catalyst may include nickel aluminide used to form diamond to diamond bonds between adjacent diamond particles.

A composite seam system including a narrow weld bead joining two panels of fabric and a seam tape applied thereon. The applied seam tape comprises a top layer, a reinforcing layer and an adhesive layer melted through the reinforcing layer and connecting the top layer to the fabric panels over the weld bead. The narrow weld bead and the small seam allowance of the fabric panels it joins allows the seam tape to be secured over the weld bead to the fabric panels while lying in a flat plane. The use of a narrow reinforcing layer of woven polyester, nylon or non-woven ultra-fine fibrous material in the seam tape allows the seam tape to be flexible enough to move with the fabric it joins, reducing the incidence of tape edge abrasion.

A turbomachine arranged with a rotor and a stator, including radial positioning means ensuring that the rotor is radially position; and a contactless axial balancing device arranged on at least one bladed wheel for axially balancing the rotor at high speed. The turbomachine includes a thrust bearing distinct from the radial positioning means serving to balance the rotor axially at low speed, and without contact at high speed. In addition, the radial positioning means are hydrostatic bearings, the turbomachine including hydrostatic bearing feed circuits suitable for connecting said bearings to a source of fluid under pressure. As a result, it is possible to obtain operation at high speeds with a very long lifetime.

An under-frame shield, particularly useful with crop sprayers and other implements which traverse fields of plants, includes one or more flexible sheet material shields connected to axle structure and to a central rigid shield by resilient connectors to facilitate suspension system movement in all directions without sacrificing ground clearance. The connection structure and sheet material shields maintain a smooth, seamless protective surface on the under side of the machine to reduce vehicle and crop damage.

A quick-connect coupling for connecting an exchangeable head to a pressing device has balls K1 with a diameter D1, which are radially movably disposed in a ball-holding part on the pressing device. Balls K1 being held radially fixed in a groove on the head with a depth N1 by a locking ring in the connected state. The head has a further peripheral groove with a depth N2. The further groove is designed to hold part of further balls K2 with a diameter D2, wherein the balls K2 are likewise disposed in a radially movable manner in the ball-holding part and wherein the diameter D2 is greater than the diameter D1. The diameter D1 is the same or smaller than the difference between the diameter D2 and the groove depth N2.

The invention relates to a washing machine and a washing method. The washing machine comprises a washing drum, a plurality of polymer plastic strips used for washing clothes are radially arranged on a central shaft in the washing drum or on the wall of the washing drum. The radially arranged polymer plastic strips are used for stirring the clothes, and dirt on the clothes and in washing water is washed off by contacting of the polymer plastic strips with the clothes, so that washing of the clothes is completed. Compared with a common washing machine, the washing machine has the advantages that the washing machine is simple in structure, washing process is simplified, and material cost and manufacture cost of the washing machine are lowered greatly. Additionally, when the washing machine is used for washing, contact area of polymer washing media with the clothes is increased, adsorption capacity to the dirt is improved, and the wear degree of the clothes is much lower.

An oscillating tool comprises a housing that accommodates a motor which for driving a tool is coupled with a drive shaft via an oscillation drive, for driving it about its longitudinal axis rotatingly oscillatingly. For reducing vibrations, there is provided an inertial mass that is movably held on the housing via at least one spring element.

An enhanced reaming apparatus and method are disclosed. A reaming assembly may have a motor and a pump that provide linear force, torsional force, and pressurized drilling fluid to a reamer to cause the reamer to enlarge the bore of a pilot hole. The reamer may have a body and a plurality of blade assemblies that cooperate to define two substantially symmetrical, oppositely oriented reaming sections. Each blade assembly may have an inner blade attached to the body and an outer blade extending outward from the body. Hard cutting elements may be used in place of the outer blade. The blade assemblies may be field-replaced, or the orientation of the reamer may be reversed to enhance the life of the reamer. The reamer has jets and circulation openings that release the drilling fluid into the bore to facilitate penetration and remove cuttings.

The invention discloses a numerical control precision micro-fine super-long deep hole drilling machine which comprises a workbench, a master control cabinet, a linear motor and a servo motor. An output shaft of the servo motor is provided with a drilling bit. The linear motor comprises a primary part installed on the master control cabinet and a secondary part where the servo motor is installed. The secondary part drives the servo motor to move so as to enable the drilling bit to stretch out or retract back above the workbench. The workbench comprises a lifting base and a workbench top arranged on the lifting base. A clamp for fixing a workpiece is installed on the workbench top. According to the numerical control precision micro-fine super-long deep hole drilling machine, the linear motor is used as a feeding power source of the drilling bit, intermediate transmission links such as a gear, a worm gear pair, a belt, a lead screw pair, a coupler and a clutch which are needed in an existing transmission chain from a motor used as a power source to a working component are abandoned, and rotational inertia, elastic deformation, a backlash, motion hysteresis, friction, vibration, noise and abrasion of the intermediate transmission links are avoided; the numerical control precision micro-fine super-long deep hole drilling machine is high in degree of automation, easy to operate, high in control precision, stable in motion, low in noise, long in service life, safe and reliable.

A dog bark limiter includes a housing (2) supported against the dog's skin by a strap, stimulus electrodes (5), and a sensor (6) for producing signals in response to vocalizing by the dog. The sensor includes a membrane (6) supported by the surface (9) for efficiently transmitting sound energy through the housing and a rigid nipple (11) engaging the membrane. Control circuitry in the housing has an input coupled to an output of the transducer and output terminals coupled to produce aversive stimulus signals between the first and second electrodes in response to the signals produced in response valid barking by the dog. A motion detector (40) produces a motion detection signal in response to a characteristic movement of the portion of dog that accompanies barking by the dog and aids in detecting a valid bark. A controller (33) executes a frequency capture routine to produce a frequency spectrum of the dog's vocalizations and compares it with a valid bark spectrum to determine if the vocalization constitutes a valid bark.

In a method to test a brake of a robot that has a number of axes, an actuator associated with one of the axes, a brake associated with this axis that is set up to at least reduce a movement of this axis, and a torque sensor associated with this axis, which determines the torque acting on this axis. The brake is activated, the torque acting on the axis is determined by the torque sensor given an activated brake, and the functional capability of the brake is assessed in a processor based on an evaluation of the torque determined by the torque sensor.

A semi-trailer leg loading nut includes a screwed hole provided on a nut column and connecting two ends of the nut. Said nut is a two-layered structure formed of a top layer and an under layer or a three-layered structure formed of a top layer, an intermediate layer and an under layer. The outer outline of at least two layers of the nut is a square with the same cutting angle. The side length of the two layers of squares is equal. The outer outline projection of the two layers of squares overlap with each other along the column axis direction. The outer outline projection of the other layer is within the overlapped projection of the two layers along the column axis direction. A funneled oil cup or an oil groove is provided on the top layer of the nut and communicates with the screwed hole. A bottom of the under layer of the nut is plane and is pressed on a loading plate in a quadrate pipe to transfer load.

The invention provides a combustion process using comminuted fuel solids from a steam-driven shear field, with controlled water content and optionally coated with a combustion catalyst. The method allows fuel solids to burn for energy production at low temperatures. The lower temperatures avoid emissions of nitrogen oxides, and the process also yields a clean, friable ash that has economic value.

A supply system for supplying in a contact-free manner electrical energy and data signals to a subscriber module, including a support member, a supply bar mounted on the support member, which supply bar supports primary energy and data interfaces, and at least one bus subscriber module mounted on the support member, which bus subscriber module includes secondary energy and data interfaces arranged adjacent and spaced from the primary energy and data interfaces, respectively, whereby electrical energy and data signals supplied to the primary interfaces are transmitted in a contact-free manner to the secondary interfaces, respectively. Preferably the support member is a mounting rail having an inverted top-hat configuration, with the supply bar being mounted longitudinally in the space defined by the horizontal bottom and vertical side walls of the mounting rail.

The invention discloses a shearing mechanism of a resin-based fiber placement system, which is applied to the field of fiber placement manufacturing of resin-based composite material members. The shearing mechanism mainly comprises the following elements: a bevel-connection blade, a knife handle block, a cylinder frame, a chopping board, a chopping board gap and a device driving element cylinder. The bevel-connection blade is connected with the knife handle block which is connected with a cylinder rod, the cylinder is arranged on the cylinder frame, and finally, the whole shearing mechanism is integrated into a fiber placement head of the fiber placement system through a mounting hole. In fiber placement process, a fiber prepreg tape is conveyed to enter the chopping board, the gas is introduced into the cylinder, the knife handle block and the bevel-connection blade fast move downwards through a via hole in the cylinder frame under the driving of the cylinder rod, thereby further cutting the fiber prepreg tape placed on the chopping board by the bevel-connection blade.

A movable hand / wrist support for use with a computer mouse is comprised of a flat and constant thickness sheet of material with an aperture there through. Aperture can be configured to be used with a mouse of any size or shape. Aperture may be configured to entirely surround a mouse so that it rests loosely within the aperture or it may be sized merely to allow the optical communication device of a mouse affixed to a top surface of movable support to communicate with an underlying surface. An secondary layer on which a mouse can rest loosely or be affixed can be affixed to a bottom surface of the sheet of material. Movable support may also include a forearm protector. Various layers may be affixed onto the sheet of material to provide additional comfort and support to the user. The hand / wrist support may be provided as a kit.

The invention discloses a cam type centering clamping chuck, which belongs to the technical field of mechanical processing. The cam type centering clamping chuck comprises a chuck body, and is characterized by comprising three claws, three square slide blocks, three eccentric cams, three blocks, a fluted disc and three small bevel gears; the chuck body is a cylindrical groove, the bottom of the eccentric cam is provided with a lever which extends along the side direction, and the end of the lever is provided with a cylindrical pin; the upper end plane of the fluted disc is provided with the bevel gear, the lower end plane is provided with three round-head straight flutes which are distributed uniformly; and the small bevel gears are engaged with the bevel gear. The cam type centering clamping chuck has the advantages of high precision, low cost, simple structure of the components, benefit design, compact overall structure, small volume, light abrasion and long service lifetime. The camtype centering clamping chuck is suitable for loading the revolving body component for lathing, turn milling and center machining.

The invention relates to a method for producing a borehole in the soil, in which a drill pipe and a conveyor screw arranged inside the drill pipe are set into rotation and introduced into the soil, and in which outcropping soil material is loosened by means of at least one main cutting edge, which is positioned axially in front of the conveyor screw, and is conveyed by means of the conveyor screw in the inside of the drill pipe. In accordance with the invention provision is made for the main cutting edge to be arranged on the drill pipe and to be rotated therewith. The invention further relates to a device for producing a borehole in the soil which can be employed in the method according to the invention.

A product-lubricated multiphase pump for pumping a multiphase mixture containing hydrocarbon includes a separation system and a supply system. To achieve a good cooling and lubrication of pump elements without a lot of operating media and operating medium circuits, the separation system has a first separation stage for at least partly separating at least a portion of the multiphase mixture into a plurality of phase-enriched components and the supply system supplies a liquid-enriched liquid component as lubricant to a pump element to be lubricated.

A method and a molding tool for producing containers from a thermoplastic plastic film. The method and tool permit the production of containers having a hollow floor and a double-walled standing base, with a seal between the two walls of the standing base. The method permits the production of such a container in large piece numbers, and with a high quality, and allows it to be transferred reliably into a stacking device. The components of the molding tool are subjected to low wear, and the molding tool is unsusceptible to contamination. These features are attained by a constant contact between the mold floor and the container floor between the shaping and stacking processes, and by the creation of a space between the inside wall of the standing base and the outside wall of the mold floor prior to the ejection of the container, the space also permitting the unmolding of a standing base that has a more pronounced undercut or a slightly conical shape.

The invention discloses a preparation method of a compound rice seedling raising medium, belonging to the technical field of organic solid waste resource utilization. The preparation method comprises the following steps: drying grain stillage in air, screening to obtain the grain stillage with the particle size of 1-4mm; and adding nutrient soil and vermiculite, and evenly mixing, so as to prepare the compound rice seedling raising medium, wherein the particle sizes of the nutrient soil and vermiculite are 3-5 mm. The compound rice seedling raising medium comprises the following components by volume percent: 50-60% of earworm dung, 20-30% of vermiculite and 20% of nutrient soil. The compound rice seedling raising medium is simple in preparation method, rich in resources, cheap in materials, rich in nutrient and stable in property, waste is turned into wealth, and environmental pollution is reduced. When the medium is used for raising seedlings, the operation is simple and convenient, labor intensity is lightened, rice seedling quality is good, percentage establishment of the seedlings is high, the industrial development of rice seedling transplanting using a rice machine is promoted, and the construction of ecological towns and new rural areas is accelerated.