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320 results about "Protruding tooth" patented technology

Upper front teeth that protrude beyond normal contact with the lower front teeth are prone to injury, often indicate a poor bite of the back teeth (molars), and may indicate an unevenness in jaw growth. Commonly, protruded upper teeth are associated with a lower jaw that is short in proportion to the upper jaw.

Non-destructive dynamic monitoring sensor for corrosion of reinforcing steel bar in concrete based on magnetic field and system

The invention relates to the monitoring technique of corrosion of reinforcing steel bars in construction engineering, and aims to provide a non-destructive dynamic monitoring sensor for corrosion of areinforcing steel bar in concrete based on a magnetic field and a system. A slot for clamping a to-be-detected reinforcing steel bar is formed in one end of a shell of the sensor; two epsilon-type protruding teeth and oppositely arranged stainless steel frames are arranged in the shell, and mounting positions of Hall sensors are retained among other opposite teeth beside a permanent magnet arranged between one opposite teeth; end opposite teeth of the stainless steel frame and a mounting position of a Hall sensor are arranged on two sides of the slot, the Hall sensors are fixed to a data collection plate and the main body parts are located in the mounting positions. The corrosion rate of the reinforcing steel bar is monitored by mean of a magnetic field principle, so that the precision and the stability are relatively high; non-destructive and dynamic monitoring of the corrosion rate of the reinforcing steel bar in concrete can be achieved. The corrosion rate of the reinforcing steelbar in concrete can be given directly quantitively. The instrument device is small in size, convenient to carry and convenient to operate in an engineering site.
Owner:ZHEJIANG UNIV +1

Light large-torque high-rigidity variable speed bicycle chain wheel assembly structure

The invention relates to the field of variable speed bicycles, in particular to a light large-torque high-rigidity variable speed bicycle chain wheel assembly structure. The light large-torque high-rigidity variable speed bicycle chain wheel assembly structure comprises an integral stepped pulley, a single-piece tooth and a supporting cylinder. The supporting cylinder is installed between the integral stepped pulley and the single-piece tooth. A plurality of different-radius layer teeth of the integral stepped pulley are integrally connected layer by layer to form a hollow tower model. The sides, close to the single-piece tooth, of the inner side layer teeth are provided with protruding teeth. Tooth holes corresponding to the protruding teeth are formed in the single-piece tooth. The protruding teeth are in interference connection with the tooth holes in the single-piece tooth. The inner diameter portion of the single-piece tooth and the inner diameter portion of the smallest layer tooth of the integral stepped pulley are provided with a single-piece tooth inner spline and a stepped pulley inner spline. The light large-torque high-rigidity variable speed bicycle chain wheel assembly structure can be light on the premise of ensuring the structural strength, rigidity and large transmission torque of a chain wheel.
Owner:郑英

High-quality biomass fuel processing device

The invention discloses a high-quality biomass fuel processing device. The high-quality biomass fuel processing device comprises a shell. A first funnel is arranged on the upper side of the shell. The shell is internally provided with a second funnel, and a horizontal rotary rod is arranged on the side, close to the first funnel, of the second funnel. Hammer pieces are arranged on the side wall of the rotary rod at equal intervals. The two ends of the rotary rod are provided with first antifriction bearings which are arranged on the shell. An adsorption roller and a smashing roller are arranged on the side, far away from the rotary rod, of the second funnel. The two ends of the adsorption roller and the two ends of the smashing roller are provided with second antifriction bearings which are arranged on the shell. Protruding tooth tips are arranged on a cutting roller. A magnetic rod is arranged on the inner side of the adsorption roller, and an oblique plate is arranged on the side, far away from the smashing roller, of the adsorption roller. The high-quality biomass fuel processing device is simple in structure, the feeding speed is effectively controlled, a feed port cannot be blocked, the smashing effect is good, the service life of the smashing roller is long, meanwhile, iron sundries are cleared away in time, and the fuel processing quality is good.
Owner:榕江荣百腾环保能源制造有限公司

Insulator structure of motor, and motor-integrated pump

An insulator structure of a motor, includes: a stator core having a plurality of protruding tooth portions which are disposed along an inner periphery of the stator core or an outer periphery of the stator core; a pair of first and second insulators respectively mounted to a first end portion and a second end portion in an axial direction of the stator core, wherein a plurality of cover portions are provided for each of the pair of the first and second insulators so as to cover the plurality of the respective tooth portions; and a winding wound around a tooth portion of the tooth portions covered with the respective cover portions, the winding being capable of causing a magnetic force to the tooth portion by an energizing; wherein with the pair of the first and second insulators, the cover portion's second head end portion in an axial direction of the first insulator in the axial direction and the cover portion's first head end portion in an axial direction of the second insulator in the axial direction mate with each other, the cover portion having the head end portion in the axial direction provided with a first fitting portion and the cover portion having the head end portion in the axial direction provided with a second fitting portion fittable with the first fitting portion are provided for each of the pair of the first and second insulators, the cover portion provided with the first fitting portion and the cover portion provided with the second fitting portion are so disposed as to face each other in such a configuration as to interpose therebetween a center axis of the stator core, and the first insulator and the second insulator which is substantially the same as the first insulator in configuration and is reversed in the axial direction are configured to face each other, such that the first fitting portion of the first insulator mates with the second fitting portion of the second insulator.
Owner:PANASONIC CORP

Device and method for testing power capability of composite explosives

The invention discloses a device and method for testing the power capability of composite explosives. The device for testing the power capability of the composite explosives is composed of winches, supports, support supporting rods, bearing bases, rotary shafts, swing arms, pendulum bobs, pendulum bob protruding teeth, a one-way limiter and angulometers. Before a test, explosive samples to be tested are prepared through special pressing molds, the samples to be tested are placed in inner cavities of the pendulum bobs and detonated through detonators, after detonation, the two pendulum bobs swing circumferentially around the rotary shafts under the limitation of the swing arms, the pendulum bobs are controlled by the one-way limiter and the pendulum bob protruding teeth to swing to the highest point and then stay still, the angulometers are used for measuring the swing angles of the pendulum bobs, and the power capability of the composite explosives after detonation is calculated and measured through the swing angles of the two pendulum bobs. According to the device and method, the improvement is made on the basis of a traditional ballistic trajectory mortar method, the conversion efficiency for converting chemical energy into mechanical energy of detonation can be improved through the two-pendulum-bob structure, and therefore the test result and the quantitative expression of the power capability of the composite explosives are more accurate.
Owner:XIAN MODERN CHEM RES INST

Method for manufacturing telescopic shaft and telescopic shaft manufactured by same

To provide a method for manufacturing a telescopic shaft having a coated section which reduces sliding resistance, the telescopic shaft being configured in such a manner that a variation in the sliding resistance depending on the position of sliding of the telescopic shaft is reduced and that lubricating oil exhibits satisfactory lubricating performance. [Solution] Clearance sections (613) are formed in a coated section (61) so that portions of the tooth flanks (412) of the tooth grooves (41) of a female shaft (16B), the portions being located near the tooth tops (411A) between the tooth grooves (41), do not come into contact with portions of the coated section (61) on the tooth flanks of protruding teeth (51), the portions being located near the roots of the protruding teeth (51). The amount of plastic deformation obtained by compressing the coated section (61) by subjecting an intermediate shaft (16) to break-in operation is in the range from 1 micrometer to 10 micrometers. This means that the depth (a1) of the clearance sections (613) before the coated section (61) is plastically deformed by compressive stress applied thereto is preferably 10 micrometers or greater. Even after the coated section (61) is plastically deformed, the clearance sections (613) are maintained recessed from a plastically deformable surface (614) by a depth (a2).
Owner:NSK LTD

Joint device

The invention discloses a joint device in the field of infant equipment. The joint device comprises first pivot seats, second pivot seats, clamping parts, triggering mechanisms and limiting modules. The first pivot seats are provided with first main tooth grooves, and the second pivot seats are in pivot joint to the first pivot seats and are provided with second main tooth grooves. The clamping parts are movably arranged between the first pivot seats and the second pivot seats and comprise main protruding teeth, the triggering mechanisms are movably connected to the clamping parts in an abutting mode, and the triggering mechanisms are operated to move the locking positions where the main protruding teeth are clamped in the first main tooth grooves and the second main tooth grooves to the unlocking positions where the main protruding teeth are clamped into the main tooth grooves and disengaged from the second main tooth grooves, so that the first pivot seats and the second pivot seats are pivoted to the folding position from the unfolding position. The limiting modules are linked to the clamping parts and the triggering mechanisms, respond to the first pivot seats and the second pivot seats to fall to the unfolding positions and respond to the triggering mechanisms to move the clamping parts to the unlocking positions from the locking positions. The limiting modules exert the limiting action for the clamping parts to be restrained to the unlocking positions.
Owner:WONDERLAND NURSERYGOODS CO LTD

Axle power generation device, self-powered sensor and vehicle state information monitoring device

The invention discloses an axle power generation device, a self-powered sensor and a vehicle state information monitoring device. The axle power generation device comprises a magnetic-conducting fluted disc and a power generation unit, wherein the magnetic-conducting fluted disc is provided with at least one protruding tooth part or a plurality of protruding tooth parts; the plurality of protruding tooth parts are evenly arranged at intervals; the magnetic-conducting fluted disc is fixed on an axle; the power generation unit comprises a shell, an electromagnetic induction coil, an N-pole permanent magnet and an S-pole permanent magnet; the electromagnetic induction coil is fixed in the shell; the N-pole permanent magnet and the S-pole permanent magnet are arranged at two sides of the electromagnetic induction coil respectively; and the power generation unit is arranged at the position with a preset distance from the outer side of the magnetic-conducting fluted disc. The axle power generation device can be applied to power supply of any vehicle equipment with power supply inconvenience; and power generation, vehicle state detection and vehicle state system monitoring can be achieved under the condition free of external power supply.
Owner:北京世纪中桥物流有限公司
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