62 results about "Pointed tooth" patented technology

A non-custom, dental tray device includes a moisture-resistant barrier layer having a labial-buccal wall, a lingual wall, and a bottom wall. The dental tray device includes at least one of the following structural features to enhance the fit of the device; (1) the bottom wall includes an abrupt reduction of width at a location corresponding to where the first bicuspid meets the canine; (2) a bottom wall in the posterior region having a width that is equal to or less than the width of the bottom wall in the anterior region, with no lingual wall in the posterior region; or (3) a transition portion between the bottom wall and either the labial-buccal wall or the lingual wall has a larger radius of curvature as compared to a radius of curvature at a transition portion between the bottom wall the other of the labial-buccal wall and the lingual wall.

The invention relates to a treatment device, in particular to an environment-friendly waste rubber recycling treatment device. The environment-friendly waste rubber recycling treatment device provided by the invention is high in environmental friendliness. In order to realize the technical purpose, the environment-friendly waste rubber recycling treatment device provided by the invention comprises a supporting rod, an air cylinder, a crushing box, a swinging rod, pointed teeth, a first crushing barrel, a rotating plate, a first bevel gear, a first rotary shaft, a first motor, a second bevel gear and the like. The supporting rod is located on the right of the air cylinder; the bottom of the air cylinder is hinged to the bottom of the interior of the crushing box; the right end of the bottom of the interior of the crushing box communicates with the left end of the top of the interior of a grinding box; and the top end of the supporting rod is hinged to the swinging rod. By means of the environment-friendly waste rubber recycling treatment device, the first motor and a second motor rotate so as to drive the pointed teeth and bayonets to crush rubber, a first grinding wheel and a second grinding wheel grind the rubber, a rolling-pressing plate rolls and presses the rubber, and therefore, the effect of high environmental friendliness is achieved.

A rail clip for securing a strip heater to a rail that resists removal when subjected to intense vibration, such as when rail cars are passing overhead. The rail clip is configured with a U-shaped rail flange receiving area wherein the opposite sides of this receiving area are configured with at least one tooth each for securing the rail therebetween. For greater securement, multiple teeth on each side of this U-shaped receiving area would be employed and with at least one tooth on each side thereof being in alignment with the other. Furthermore, the teeth on at least one side of this receiving area would include multiple teeth, both pointed and elongated.

The invention relates to a self-compensating fastening large-caliber fast adaptor which is used for butt jointing of two pipes and solves the defects of high cost and poor practicability in the prior art. The invention is characterized in that: the outer circumference of pipe fittings is encircled by a rubber sealing boot 2, a convex ring of which is arranged among the pipe fittings. Left and right sleeves 3 and 4 are respectively sheathed on the pipe fittings, and pressed on the outer surface of the rubber sealing boot 2. A trough 9 of the left sleeve 3 is meshed with a projection 12 of the right sleeve 4. A cotter pin 8 fixedly locks the left and right sleeves 3 and 4. A claw 5 is provided with a pointed teeth on the concave surface, arranged in dovetail inner cone troughs 11 and 14 in the left and right sleeves 3 and 4, pasted on the outer wall of the pipe fittings, can slide along the axial direction of the pipe fittings and concentrically contract to occlude and tighten the pipe fittings. The fast adaptor is high, middle and low pressure resistant. The self-compensating fastening omni-directional secure seal with firm soft syncretic is provided without welding or flange type, not being opened with trench type, and not being provided with a compensator additionally, thereby saving labor and time, especially under the condition of severe environment, the fast adaptor of the invention has the advantages of being convenient and fast, low cost, energy saving and environmental protection. The fast adaptor of the invention is used for connecting two pipes through which the fluid is to be conveyed.

A catch tool for retrieval of a well column pipe having a pipe wall, the catch tool incorporating a fork having a pair of spaced tines; and a pair of clamping pivot arms connected operatively to the fork, the clamping arms being adapted for, upon the receipt by the tines of the pipe wall, grasping the pipe wall; the clamping arms having proximal and distal ends, the arms being adapted for pivoting movements between first and second positions, the arms' distal ends being displaced away from each other a distance less than the pipe wall's thickness dimension while in the first position, and being carried by the pipe wall to their second positions.

The present invention discloses a cervical synostosis device for front enter operation of cervical vertebrae. Said device is formed from upper and lower two arms, screws and a hollow column body and is prepared by using absorbable material of poly-DL-lactic acid, poly-L-lactic acid and polyglycollic acid or copolymer of them, biological ceramics or composite of hydroxyapatite and the above-mentioned polymer. The side wal of said column body can have or have not open pore, its upper surface is made into the risen form, and its upper and lower surface can have or have not pointed tooth, and its cross-section is polygonal or circular. Said invention also provides its advantages and application range.

The invention discloses a riveting connecting piece, which comprises a connecting part and a riveting part, wherein a through threaded hole or a blind threaded hole is formed in the riveting connecting piece preferentially, and the inside diameter of the hole is smaller than that of the riveting part; naturally, the hole can be a through hole or a blind hole arranged in the riveting connecting piece so as to adopt other connecting modes; the connecting part is used for connecting other components, and the riveting part is used for riveting and tightening with a sheet material to be riveted; the riveting part is hollow inside and comprises a base part and a deformed riveting column; the deformed riveting column is of a short pipe shape, the bottom thereof is provided with annularly-distributed pointed teeth towards the outside to prevent rotation, one end face of the base part contacts with the sheet material to be riveted, the other end of the base part is connected with the connecting part, and the outside diameter of the pointed teeth is smaller than that of the base part; the material of the riveting connecting piece is a plastic deformation material of which the strength is higher than that of the sheet material to be riveted, and the material is preferably stainless steel, or other metallic materials or nonmetal materials. The riveting connecting piece not only has stronger axial bearing capacity, but also has stronger radial twisting resistance, thus the riveting is firmer.

A bolt (10) for securing timber to any other material, comprises: a bolt head (101) with a series of spiked teeth (102) on its underside; a cylindrical bolt rod (103) extending from the bolt head (101) is threaded and split into two rods (105a,b) at its free end, so as to define a slot (106) therebetween. In use a user drills a hole through pieces of timber to be secured together, and hammers the bolt through the hole. The spiked teeth on the bolt head lock into the timber, securing the bolt at one end. At the free, split end of the bolt rod, a washer and nut are tightened onto the bolt. A cold chisel is hammered into the slot between the split ends of the rod, bending the ends outwards and thus preventing the nut from loosening.

The invention discloses a heading machine cutter head suitable for an extremely hard rock stratum. The heading machine cutter head suitable for the extremely hard rock stratum is composed of an outer ring cutter head, an edge scraper, a sawtooth cutter, an outer opening, an inner ring cutter head, impact teeth, sharp teeth, an inner opening, a thrust cylinder, a rotating motor and an impact cylinder. The outer ring cutter head firstly drives the sawtooth cutter and the edge scraper to excavate an annular tunnel, and then the inner ring cutter head drives the impact teeth and the sharp teeth to impact rock in a middle area by using a free face, so that efficient rock breaking of a heading machine is realized.

A pipe gasket including a compressible body having a heel portion and a sealing portion and a plurality of metal segments at least partially embedded in the compressible body and circumferentially spaced therein. Each of the metal segments includes a compression arm extending within the sealing portion and radially outward and away from the heel portion, a rounded nose portion extending within the heel portion and an acutely pointed tooth extending radially inward from a segment portion located between the compression arm and the nose portion. The compression arm extends radially outward within the gasket from a point located proximal to the tip of the tooth to a point within the sealing portion that is distal to the tip of the tooth. This arrangement provides for leveraging of the radial forces created by the compression of the sealing portion between the spigot end and the bell end to increase the radially inward force applied by the tooth on the spigot end.

The invention discloses an electrostatic oil fume purifying device capable of improving oil fume removing efficiency greatly with a coagulation electric field. The electrostatic oil fume purifying device comprises a coagulation box body arranged between and communicated with an air inlet and a purifying box body, wherein a plurality of coagulation electric field units are arranged in the coagulation box body in the flowing direction of oil fume; each coagulation electric field unit structurally comprises a plurality of rows of coagulation electric field cathode plates and a plurality of rows of coagulation electric field anode plates; the coagulation electric field cathode plates and the coagulation electric field anode plates are arranged at intervals; two side edges of each coagulation electric field cathode plate as well as those of each coagulation electric field anode plate are pointed teeth-shaped; each row of coagulation electric field cathode plates and each row of coagulation electric field anode plates are respectively mounted on a cathode plate mounting shaft and an anode plate mounting shaft on a mounting rack uniformly and fixedly; both the coagulation electric field cathode plates and the coagulation electric field anode plates are arranged in the flowing direction of oil fume; coagulation electric field cathode plates in each row are staggered with coagulation electric field anode plates in an adjacent row; the pointed teeth-shaped side edges of each coagulation electric field cathode plate / coagulation electric field anode plate in each row are between coagulation electric field anode plates / coagulation electric field cathode plates in adjacent rows.

The invention provides an equalizing groove milling device which comprises a base, wherein a dividing disk is mounted on the base througha locking screw; a limiting pin I and a limiting pin II are arranged in end holes on the two sides of the base respectively; rotating prevention screws are fixedly mounted at the two ends of the base respectively; the front ends of the rotating prevention screws are inserted into axial long grooves of the limiting pin I and the limiting pin II; springs I are mounted on the limiting pin I and the limiting pin II; adjusting screws are arranged at the upper ends of the springs I; one end of each of the limiting pin I and the limiting pin II is a pointed tooth with a slope, and is inserted into a groove of the dividing disk; the limiting pin I and the limiting pin II are connected with the dividing disk in a floating manner; the dividing disk is fixedly connected with a mandrel body through a key; the mandrel body is fixedly connected with elastic sleeves through fastening screws, and connected with a compaction taper sleeve in a floating manner through a spring II; a compression screw is arranged in the compaction taper sleeve; a turnplate is connected with the mandrel body in a floating manner through two baffles and an inner bush; and the baffle on the outer side is fixedly connected with a nut and a locking nut. The equalizing groove milling device is convenient to operate, high in accuracy and high in working efficiency.

The invention discloses an ultrafine grinder in the field of grinding devices. The ultrafine grinder comprises a stand. The stand is provided with a bearing block; the center of the bearing block is provided with a vertical shaft; the stand is also provided with a grinding chamber; a cylindrical gear ring is arranged in the grinding chamber; the inner periphery of the gear ring is provided with a plurality of protruding pointed teeth; the vertical shaft extends into the gear ring from the center of the bottom part of the gear ring; the upper end of the vertical shaft is provided with a hammering cutter disk; the periphery of the hammering cutter disk is provided with a plurality of hammering cutters corresponding to the protruding pointed teeth; a grading mechanism is also arranged above the hammering cutters and the gear ring in the grinding chamber; the stand is fixedly provided with a first motor; the output shaft end of the first motor is in transmission connection with the vertical shaft; the vertical shaft is coaxially arranged in a hollow outer shaft through a bearing; the outer shaft is fixedly arranged on the bearing block through the bearing; the outer shaft is in the transmission connection with the output shaft end of a second motor arranged on the stand; and the upper end of the outer shaft is fixedly connected with the gear ring. When the ultrafine grinder works, the vertical shaft and the outer shaft rotate in opposite directions, and therefore, the efficiency of the grinder can be increased, and moving parts are low in rotate speed, and therefore, mechanical vibration and noise can be reduced, and the service life is prolonged.

Spring teeth for a harvesting machine are each constructed of spring wire having a square cross section and being wound so as to define a coil torsion spring section terminating in a tine, with the tine having a leading flat surface, considered relative to the engagement of tine with the crop during pick-up operation, and having a trailing flat surface disposed parallel to said leading flat surface. The coil torsion spring is mounted to a tooth bar formed as a channel member such that the outer surface of the coils make a relatively large area contact with the tooth bar at location spaced approximately 180° from where the tine joins the coil torsion spring. This together with the fact that the contact area of the flat sides of the wire in the coil region is also quite large leads to a damping action that lessens stress in the tooth assembly.

The invention relates to a shelling device for grains of agricultural products, in particular to a soybean cutting sheller. The soybean cutting sheller comprises a machine shell, a shelling roller driven by a motor is arranged in the machine shell, the shelling roller comprises a pair of cutting rollers and a pair of peeling rollers, and the surface of each peeling roller is provided with a plurality of sharp teeth formed by two crossed oblique tooth sockets. The cutting rollers are connected with a driving wheel of the motor through belts or a chain, the two cutting rollers are provided with belt wheels different in transmission ratio, and the belts are provided with tensioning wheels. The shelling speed of soybeans is improved, low-temperature soy flour quality is guaranteed, powder in hulls is reduced, the soybeans keep complete after being shelled, content of the soybean hulls is low, and economic benefits of an enterprise are increased.

Digging and tilling tools with both a central step and an offset shaft are disclosed. The central step allows a user to apply pressure directly over the centerline of the tool head, and the shaft, offset to one side, allows clearance for the knee. The handle on the other end of the shaft may be offset in line with the centerline of the tool head. In some embodiments, the offset shaft may be connected with the tool head by means of connecting members which connect between the shaft and sides of the tool head, leaving a central opening and acting as “stirrups” or guides for the user's foot. In addition to the horizontal offset of the shaft, the tool head may be rearwardly offset from the shaft. Also disclosed are tool heads with tines having L- and T-shaped cross-sections.

The invention relates to a gearbox drive unit, particularly to a gearbox drive unit serving as an electrical auxiliary drive for motor vehicle. The gearbox drive unit comprises a rotatably arranged gearbox element (8), in which external teeth (15) and an annular collar (16) are formed. The annular collar (16) sectionally surrounds the external teeth (15) along a rotational axis (4). A frontal toothing (20) is formed on the annular collar (16). The external teeth (15) is designed into modifiable fine teeth, and the frontal toothing (20) of the annular collar (16) is formed by a pointed tooth crown (20).

The present invention is concerned with a grating apparatus. The apparatus has a grating member provided with a grating surface configured to interact with a food item. The grating member includes a plurality of assemblies of teeth pointing away from the grating surface, wherein the assemblies of teeth include pointed teeth of non-homogenous in size, each pointed tooth has a body defining at least a first triangular side with an angle of inclination from substantially 44-67° with respect to the grating surface.

The invention provides a material mixer, which comprises a hollow cylindrical box with an ellipse in cross section, a feeding pipe arranged in parallel on the top of the box, a discharge pipe arranged at the bottom of the box, and a transverse direction between the feeding pipes. There is a return pipe in communication, and a columnar swivel is arranged in the box. The cross section of the swivel is surrounded by three arcs. A cavity is provided in the center of the swivel, and a Rectangular slot, through the box wall is provided with a horizontally arranged rotating shaft, the rotating shaft extends into the cavity of the rotating body, the rotating shaft is surrounded by a cylindrical sleeve, and the cylindrical sleeve The sleeve is provided with sharp teeth along the upper direction, and the sharp teeth can be locked in the rectangular groove. The rotation of the rotating shaft of the present invention drives the rotation of the rotating body, so that the liquid in the box rotates and flows around the rotating body, thereby achieving the effect of mixing materials, and has a simple structure and strong practicability.

The invention relates to a pulse discharge ozone generation apparatus, which uses discharge between metal electrodes, wherein high voltage electrodes are rod-like metal electrodes using multiple pointed teeth, a ground electrode is a honeycomb-like metal cylinder, each high voltage electrode is inserted and placed in one metal cylinder, the high voltage electrodes and the honeycomb ground electrode are placed in a sealed shell made of stainless steel, the high voltage electrodes are connected to the high voltage output terminal of a power source, the ground electrode is connected to the shell,the ground electrode and the ground electrode of the power source are connected to the ground, one end of the closed shell is provided with an oxygen inlet, and the other end is a gas outlet for generating ozone. According to the present invention, the ozone generated by the apparatus can be used for advanced oxidation, sterilization disinfection and other purposes.

A handheld teeth skinning tool is provided with a head assembly having at toothed roller with interchangeable teeth rings, with the rings having different tooth configurations. The teeth rings are securely mounted on the insert arbor using male and female connections. The teeth rings may include pointed teeth for aggressively gripping the skin for direction into the blade of the head assembly, while square teeth allow for easy manual maneuverability of the head assembly on the meat carcass or head. The roller provides increase life expectancy and improved handling for lower costs and higher productivity.

The invention discloses a woven bag grabbing mechanism, system and method. The mechanism comprises a first claw body and a second claw body. The first claw body is movably arranged on one side face of the second claw body in a locating manner. The first claw body and the second claw body are provided with pointed teeth at intervals. A stirring mechanism is arranged on the first claw body or the second claw body. A drive device is connected with and drives the stirring mechanism so that the first claw body and the second claw body can do relative horizontal reciprocating motion. According to the horizontal reciprocating motion, a changeable torsion angle is formed between the pointed teeth, arranged on the same horizontal plane, of the first claw body and the second claw body, and after the pointed teeth of the first claw body and the second claw body are inserted into a woven bag, the woven bag can be grabbed and taken down. According to the woven bag grabbing mechanism, system and method, the claw tips of the two pairs of pointed teeth are buckled on the woven bag through the drive device to grab the woven bag and feed the woven bag into a packing machine, the bag grabbing accuracy rate can reach 99% or above, and the problem that a traditional suction cup type bag grabbing machine cannot grab the woven bag is solved.

An adapter assembly comprising an adapter plate and a retainer. The adapter plate comprises a substantially planar adapter body, a spaced pair of generally parallel upper for removably securing said adapter assembly to equipment, and a spaced pair of lower legs having a spaced pair of lower tines configured to have a gap there between, wherein the lower tines each comprise a ratchet tooth structure on an exterior surface thereof. The retainer is configured for slideable attachment to the lower tines and for spanning the gap between the lower tines, the retainer comprising a corresponding ratchet tooth on an interior surface thereof configured to engage with the ratchet tooth structure for a one-way slideable locking engagement of the retainer on the lower tines.

The invention discloses a jaw crusher toothed plate, which comprises a toothed plate (1) and teeth tines (3), and the space between the teeth tines is 3-5 times of the tooth height. A groove (4) is arranged between two adjacent teeth tines (3). After the teeth space between the teeth tines on the toothed plate is increased, the middle part of a stone material is suspended in midair between two teeth, and torque is increased, so that the stone material is easy to break, the production efficiency is improved, and the electric energy is saved.

The invention belongs to the field of environmental sanitation supplies and provides a chewing gum scraping tool so as to achieve the purpose of facilitating cleaning. The chewing gum scraping tool comprises a shell, a power source, a switch and a motor are mounted in the shell, and the motor is connected with a scraper disc. A plurality of scrapers are mounted on the scraper disc, and the power source is a rechargeable power source. By adopting the structure, in use, the motor serves as the power to drive the scraper disc to rotate, and the scrapers are mounted at the edge of the scraper disc so that the scrapers can make rim forming movement to scrap off chewing gum; and sharp teeth of the front portion of the scrapers are very sharp, and thus the chewing gum can be very easily scrapped off.

The invention relates to a kneading device for okra leaf processing. A roller is fixedly installed on a supporting frame, a plurality of circular arc protrusions which are evenly distributed are arranged on the inner wall of the roller, and a discharge port is formed in one side of the roller and is composed of a movable section and a base part section which are hinged. The supporting frame below the discharging port is provided with a telescopic supporting rod used for supporting the movable section. A motor is arranged in a storage chamber in the supporting frame, the motor is further connected with a driven shaft through a rotation belt, the driven shaft is arranged in the roller, vertical connecting rods are arranged on the outer side of the driven shaft, kneading balls are arranged on the outer side of the parts, between the vertical connecting rods, of the driven shaft, and sharp teeth and circular teeth are arranged on the kneading balls at intervals. The kneading device for okra leaf processing can quickly knead okra leaves and other materials, kneading is sufficient, using is convenient, and practicality is high.

The invention relates to a treatment device, in particular to an environment-friendly waste rubber recycling treatment device. The environment-friendly waste rubber recycling treatment device provided by the invention is high in environmental friendliness. In order to realize the technical purpose, the environment-friendly waste rubber recycling treatment device provided by the invention comprises a supporting rod, an air cylinder, a crushing box, a swinging rod, pointed teeth, a first crushing barrel, a rotating plate, a first bevel gear, a first rotary shaft, a first motor, a second bevel gear and the like. The supporting rod is located on the right of the air cylinder; the bottom of the air cylinder is hinged to the bottom of the interior of the crushing box; the right end of the bottom of the interior of the crushing box communicates with the left end of the top of the interior of a grinding box; and the top end of the supporting rod is hinged to the swinging rod. By means of the environment-friendly waste rubber recycling treatment device, the first motor and a second motor rotate so as to drive the pointed teeth and bayonets to crush rubber, a first grinding wheel and a second grinding wheel grind the rubber, a rolling-pressing plate rolls and presses the rubber, and therefore, the effect of high environmental friendliness is achieved.