983 results about "Conical cavity" patented technology

An electronic sign module housing having an overmolded gasket seal including an elastomer overmolded gasket seal with an inner and an outer lip and a base overmolded to a rearwardly located contact surface of an electronic sign module housing. Grooves on the contact surface of the electronic sign module housing provide additional bonding surfaces with a greater surface area to enhance the chemically-bonded overmolding of the overmolded gasket seal. Truncated conical projections extending forwardly from the elastomer base extend into correspondingly shaped truncated conical cavities in the electronic sign module housing in order to provide additional chemical bonding and to provide a geometrically based frictional engagement arrangement.

A vortex separator for drawing a substantially moisture-free airstream from a waste stream having an annular channel defining a first vortex flow path for separating liquid and solid waste from this waste stream and preferably a filter unit with an inverted conical cavity between nested inverted cones defining a second vortex flow path that is isolated from the first vortex flow path for separating additional liquid and solid waste from the waste stream before it exits the vortex separator. In preferred embodiments, the separator includes a removable filter unit cartridge positioned within the outer cone and a helix isolator to respectively make use of the separator more convenient to use and more efficient.

An improved gas block for a firearm has a first longitudinal bore for receiving a firearm barrel, the barrel having a gas port, the gas block having a second longitudinal bore for receiving a gas tube or operating element. The block includes a vertical bore aligned with the barrel gas port and connecting the first and second block bores and permitting passage of cartridge gas from the barrel gas port to the gas tube. The improved gas block may include a military rail, forward of the gas tube, the forward location permitting the rail and accessories to lie close to the barrel, improving handling and reducing bulk. The barrel may include a conical cavity generally opposite the gas port. The block may include a conical point set screw adapted to mate with the barrel conical cavity, the screw when tightened forcing alignment of the block vertical bore with the barrel gas port and simultaneously clamping the block to the barrel. An installation device provides a means for forming a conical cavity in the barrel surface.

An implant system comprising a body that defines a highly sharp conical end portion provided with a longitudinal milled section that continues as a cylindrical central portion, both portions having a trapezoidal-sectional thread and ending at the top in a truncated conical head that has a truncated conical cavity from whose bottom a threaded blind hole projects, the inner wall of the truncated conical cavity being thus provided with a plurality of projections lying in divergent planes that match its large diameter matching the coronal end and its small diameter matching the apical end, said projections having a triangular cross-section whose free edges are parallel to the annular surface of the cavity and have a rounded profile, said projections forming a star-shaped figure, and a prosthetic support structure being obtained in said cavity, having a truncated conical portion whose side wall has cross-sectional projections homologous to the projections of said cavity, said projections delimiting rounded-bottom cuttings, which form, with the projections of the cavity, a joint between both pieces, a longitudinally drilled truncated conical portion projecting from the prosthetic structure.

A hand-operable and portable pencil sharpener which is comprised of a housing having a conical cavity therein. The cavity is of circular cross-section and defines an open inlet end tapering to a narrow inner end. A collar is provided about the open inlet end and formed integral with the housing. A pencil centering insert is rotatably secured in the collar by a flexible and removable snap ring. A slot is provided along the side wall of the conical cavity and a blade having a,sharp edge is secured adjacent to the slot with the sharp edge projecting slightly into the cavity whereby to shave a portion of the wood and lead on the extremity of a carpenter's pencil rotated in the conical cavity and centered by a centering slot in the pencil centering insert. An abrading element is secured to the housing to permit the abrading of a sharp point on the end of the lead.

The invention relates to the technical field of sand removers, in particular to a high-efficiency spiral-flow type sand remover for an oil field wellhead. The high-efficiency spiral-flow type sand remover comprises a barrel body, a sand unloading device, a sand discharging separation barrel and a flow guide rod, wherein a liquid inlet and a liquid outlet are respectively formed at the left end and the right end of the barrel body; the sand discharging separation barrel is fixedly arranged in the barrel body; the flow guide rod is arranged in the sand discharging separation barrel; spiral blades are fixed on the flow guide rod; and a liquid conveying channel is formed between the spiral blades and the sand discharging separation barrel. The high-efficiency spiral-flow type sand remover is rational and compact in structure and convenient to use; a sand discharging cavity is a conical cavity in which a communicating hole is used as a center and two sides are provided with narrow outer parts and wide inner parts; furthermore, the sand discharging elongated holes are distributed along the circumference in a rightward spiral manner, and the axial direction of the sand discharging elongated holes is tangent with the inner wall of the barrel body; therefore, impurity particles can be effectively concentrated at the communicating hole, and the sand discharging effect is relatively good; impurities can be prevented from being retained in the sand discharging cavity; and moreover, the sand discharging elongated holes are elongated, so that the sand discharging amount is increased, and the working efficiency is improved.

The invention discloses a millimeter wave blackbody radiation calibration source with a biconical cavity serial structure, which is cylindrical as a whole and has a cylindrical structure made of metalmaterial. An integrated cavity structure connected in series by a lip, a circular cavity, a transition section and a conical cavity which are all in rounding off from top to bottom is arranged in thecenter of a cylinder, and the opening surface of the cavity is arranged in the center of the top of the cylinder. A cavity inner wall wave-absorbing material coating is made of wave-absorbing material coated on the inner wall of the cavity according to the required thickness. The invention lowers the probability that radiation energy incident from the opening surface is reflected and returned from the opening surface during transmission in the cavity so that the radiation energy is reflected many times in the cavity and absorbed. Through controlling the coating depth, the invention solves theproblem that the consistency of temperatures of blackbody calibration sources is influenced due to overlarge coating depth and poor thermal conductivity while improving the absorptivity of the cavityinner wall of the blackbody radiation calibration source to the radiation energy.

A spraying head assembly has a tubular body, a cap, an upper plug, a lower plug and a spring. The cap is attached to the body and has a spraying channel, a conical cavity and a spraying hole. The conical cavity is defined inside the cap and communicates with the spraying channel and the spraying hole. The upper plug is held in the body and comprises a spraying end, a connecting end, a head and shaft. The head has a recess communicating with the spraying channel having a conical bottom. Multiple passages are defined in the head and communicate with the recess. The lower plug is mounted movably in the chamber in the body and is connected to the upper plug using the spring. In this arrangement, a liquid supplied to the connecting end forms vortexes in the body to reduce particles of liquid nebulization and raise ejection speed and therefore distance.

The invention provides a cyclone type oil-gas separator of an engine. The separator comprises a conical cavity body, wherein the side wall of the upper part of the conical cavity body is provided with a mixed oil-gas inlet tube, the top part of the conical cavity body is provided with a gas discharge opening, and the bottom part of the conical cavity body is provided with an oil return opening; and the inner wall of the conical cavity body is provided with a spiral type maze separation path from the top to the bottom, the spiral type maze separation path is a protruding strip forming the surface of the inner wall of the conical cavity body and spirally goes down on the inner wall of the conical cavity body, and the spiral type maze separation path is of a discontinuous type. The separator adopts a structure of the combination of the conical cavity body and the spiral type maze, so that under the same manufacturing process conditions, the separator has the advantages of improving the wall collision effect when the oil and the gas centrifugally rotate, improving the adhesive capability of the oil and the gas, reducing the amount of the mixed gas entering a combustion chamber of the engine, lowering emission, and reducing the consumption of engine oil.

The invention discloses a novel optical communication system and method suitable for a rotary joint. The system comprises a light source, an optical beam expanding lens battery, a wavelength spectroscope, a focusing lens battery, a receiving detector, a reception unit, an emission unit and a conical cavity; a light beam emitted by the light source is collimated by the optical beam expanding lens battery, the collimated light beam is transmitted by the wavelength spectroscope in which reception is separated from transmission; the transmitted light beam is reflected by the surface of the conicalsurface into a circular ring light beam, and the reception unit receives the circular ring light beam; collimated light emitted by the emission unit irradiates the surface of the conical cavity, reflected by the surface of the conical cavity to the wavelength spectroscope, and reflected by the wavelength spectroscope to the focusing lens battery, and the light beam gathered by the focusing lens battery is transmitted to the receiving detector. Bidirectional communication of an emission light ring and optical reception are realized without being influenced by a rotation mechanism, and information interaction can be realized for two servo mechanisms including the internal and external stators or the rotary joint.

The invention relates to an electric grinding and crushing device. The technical proposal of the device is as follows: a rotary cylindriconical ball mill (6) is arranged in a conical cavity which is fixed with a spiral mill (7) through a rolling bearing (12), a spiral groove (5) is processed on the inner wall of the conical cavity which is fixed with the spiral mill (7), and the taper of the conical cavity which is fixed with the spiral mill (7) is larger than the taper of a conical surface of the rotary cylindriconical ball mill (6). A first feed hopper (8) is arranged at the gap between the upper end of the conical surface of the rotary cylindriconical ball mill (6) and the upper end of the conical cavity which is fixed with the spiral mill (7), and a second feed hopper (10) is arranged over the center of the inner cavity of the rotary cylindriconical ball mill (6). A central square shaft (4) is fixed at the upper part of the center of the inner cavity of the rotary cylindriconical ball mill (6), and 3 to 30 blades (3) are arranged on the central square shaft (4). A first motor (16) is linked with the rotary cylindriconical ball mill (6) by a belt wheel (15) and a belt (14), and a second motor (20) of a conveying extrusion mechanism directly drives a conical screw rod (17) by a speed reducer (19). The electric grinding and crushing device is characterized by convenient use, low cost and small using space.

An electrical heater bundle has heater elements, each including a metal tube, an electrical resistance coil within the tube, a conductor pin connected to the coil and protruding from an end of the tube, and an electrical insulation powder surrounding the coil within the tube. A conical cavity is located in the insulation powder at the end of the tube, the cavity extending from an inner diameter of the tube to the conductor pin. The cavity is filled with an epoxy that is cured in place. The insulation powder may have an infiltrated layer at the cavity that is an uncured liquid silicone. The heater elements are mounted to a header plate, and the elements associated with the three different phases of electrical power may protrude past the header plate at different distances.

The invention discloses a rotary columnar deposit sampler, comprising a sampling tube, a rotary cutting system and a supporting board. The sampling tube comprises a positive half-tube, a matching half-tube, a top cover, a mouth piece and a manual rod; the sampling tube comprises a positive half-tube and a matching half-tube, and can be switched on or off with a hinge by the bolt and nut arranged on both axial sides; the mouth piece comprises a half right-circular conical cavity and a triangular plate, the bottom side thereof is fixedly connected with the bottom side of the matching half-tube, and the flank is blocked by a triangular plate; the rotary cutting system comprises a rotary cutting blade, a bushing, a rotary rod, a rotary-cutting handle and a stop clipping-hook, the rotary cutting blade is in semicircle shape and vertically fixed on the rotary rod by equal distances, the rotary rod is fixed on the axial line of the positive half-tube and can make horizontal circumrotation; the supporting board comprises a plurality of rectangular clapboards fixed on the matching half-tube by equal intervals, and the gap between two neighboring flat-plates can ensure free rotary cutting movements of the rotary cutting blade. The sampler adopts a rotary cutting manner to stratify the deposit, the structure is simple, the cost is low, the operation is convenient, and the disassembly and maintenance are easy, and is light to carry.

The invention discloses a rotor slippage complementary exciting permanent-magnetic brushless variable speed motor. A rotor of the motor is connected with a motor rotating shaft through a spline and can move along the axial direction; two groups of polarity-complementation exciting magnetic sources are arranged on the periphery of the rotor side by side, wherein one group is main flux source exciting bodies, and the other group is secondary flux source exciting bodies; the main and the secondary flux source exciting bodies are arranged with alternated polarities by permanent magnets with the same number respectively to form rings; the polarity distribution on the circumference of the secondary flux source exciting bodies is spaced by one polar distance from the polarity distribution on the circumference of the main flux source exciting bodies; a roller path disc is fixedly connected on the motor rotating shaft, and the roller path disc and a conical cavity at one end of the rotor form a wedge-shaped space; and a plurality of rollers for pushing the rotor to move along the axial direction by eccentric motion are arranged in the wedge-shaped space. In the invention, the rotor moves along the axial direction to reduce the flux so as to change the torque/rotational speed property of the motor and realize speed variation, which improves the mechanical property of the permanent-magnetic brushless variable speed motor per se, enlarges the full-power speed adjusting range of the motor, keeps the volume of the motor and saves the production cost.

A multiple vortex separator for drawing a substantially moisture-free airstream from a waste stream having an annular channel defining a first vortex flow path for separating liquid and solid waste from this waste stream and an inverted conical cavity between nested inverted cones defining a second vortex flow path that is isolated from the first vortex flow path for separating additional liquid and solid waste from the waste stream before it exits the vortex separator.

The invention discloses a cavitation type ultrahigh pressure water hammer type water gun sprayer. Under the high pressure, a nozzle of the sprayer sprays out water hammer jet flow with cavitation proficiency. The sprayer comprises a sprayer cavity comprising an accordion cavity, a Helmholtz cavity and a conical nozzle outlet control section, wherein the accordion cavity and the Helmholtz cavity are axially through along the sprayer. A conical cavity transition section is formed between the accordion cavity and the Helmholtz cavity, high-speed fluid flows from the accordion cavity to a nozzle outlet to form water hammer flow with self-oscillation, and the water hammer flow produces vertex adhering wall effect at the nozzle outlet control section so that a cavitation phenomenon is induced at the nozzle outlet control section. The water jet flow sprayed out by the sprayer belongs to discontinuous cavitation water hammer flow, water attacking strength is in alternate tension with relaxation, alternating stress can be exerted on the surface of an attacked object, and the surface of the attacked object can be easily damaged or surrendered due to fatigue strength by means of the alternating stress and the cavitation effect. The cavitation type ultrahigh pressure water hammer type water gun sprayer is applied to occasions requiring rust removal, cleaning, scrabbing on the surface of concrete and the like.

The invention discloses a sewage sedimentation device convenient for sludge discharge. The device comprises a tank, a water inlet pipe, a stirring plate and a mixer shaft. the bottom of the tank is provided with a conical cavity shaped as an inverted cone structure. The inner wall of the conical cavity is abutted against symmetrically-arranged scraper plates. The bottom of the tank is communicatedwith a vertical pipe, inside which a spiral blanking roller is arranged. the top of the spiral blanking roller is fixedly connected with the scraper plates. Through the tank provided with the conicalcavity, the scraper plates which are abutted against and slidingly connected with the inner wall of the conical cavity and the spiral blanking roller arranged inside the vertical pipe, the settled sludge is efficiently collected and discharged, and it is convenient to clean sludge while obstruction of a sludge discharge pipe is avoided. Through the stirring plate provided with a central pipelineand an overflow orifice, a gear pump and a hollow mixer shaft, efficient and uniform diffusion of a flocculating agent is realized, mixing uniformity and efficiency of the flocculating agent are raised, and sediment generation is accelerated.