239 results about "Shape fitting" patented technology

The invention is a universal connector which is useful with a variety of differently configured and shaped fittings as well as for applications when the fittings are identical. The connectors provided at either end of the tube may be formed by either compression molding or injection overmolding whereas the connections which are provided internal of either end connection, are positioned on the tube by injection overmolding.

The present invention discloses one kind of biological membrane fixing device for eye surface. The biological membrane fixing device is one arced ring in the shape fitting the eyeball surface and upper and lower vault conjunctiva, and may have notch in the inner surface. It is used in fixing amnion onto eye through simple operation without surgical operation and injury to eyelid.

A shape fitting toy comprising: a plurality of blocks having different types of shapes from each other, and a block selection part having a plurality of block passing holes each of which has a shape corresponding to one of the blocks having a plurality of different shapes and can pass only a corresponding one of the blocks. Each of the different types of shapes of the blocks is selected from a group consisting of a sphere and various types of regular polyhedrons.

A system and method for imaging a subject are disclosed. A plurality of edge points corresponding to a set of candidate structures are determined in each image frame in a plurality of 3D image frames corresponding to a volume in the subject. A target structure is detected from the set of candidate structures by applying constrained shape fitting to the edge points in each image frame. A subgroup of image frames including the target structure is identified from the 3D frames. A subset of edge points corresponding to the target structure is determined in each of the subgroup of image frames. A plurality of 2D scan planes corresponding to the subset of edge points is determined, and ranked using a determined ranking function to identify a desired scan plane. A diagnostic parameter corresponding to the target structure is measured using a selected image frame that includes the desired scan plane.

A device (14) for attaching or hooking an engine to an aircraft strut (10) comprises a circular arc-shaped fitting (16), formed from two elementary, coupled portions, which are also circular arc-shaped. These two elementary portions can be separate parts joined by bolts (24). The fitting (16) is fixed to the strut (10) by tension screws (30) and is solely connected to the engine by two connections or links (18). Each of these connections comprises a damping or shock absorber block (36) fixed to a base (40) connected to the engine and connected to one end of the fitting by a spindle (42). A holding part (44), fixed between the shock absorber block (36) and the base (40), is connected to the fitting by a joint (50) with clearance.

A multi-layer coil is wound around a bobbin having a center pillar and a small and a large flanges connected to longitudinal ends of the center pillar. A winding space having a trapezoidal cross-section in a plane cut through the center axis of the bobbin is formed outside the center pillar between both flanges. To wind the multi-layer coil in this winding space, a turning position where a layer of the coil moves up to a higher layer is set by a position setter, and the turning position is automatically shifted layer by layer to form a sloped outer surface of the coil. The coil is wound in a shape fitting the trapezoidal winding space without reducing the winding speed. The space factor of the coil in the winding space is improved, making the coil compact in size.

The invention relates to an LED (light emitting diode) driving power supply with a high power factor and without electrolytic capacity. The LED driving power supply mainly comprises an alternating current input power supply, a monophase uncontrolled rectifier bridge, a main DC (direct current)/DC conversion circuit, an auxiliary DC/DC conversion circuit, an energy storage capacitor and a filter capacitor. The LED driving power supply is mainly and technically characterized in that the auxiliary DC/DC conversion circuit is merged into the input end of the main DC/DC conversion circuit, and has the functions of balancing an instantaneous power between input and output to be without the electrolytic capacity and compensating a current wave shape on the input end to realize the high power factor. By the adoption of the driving power supply, the defect that a three-time harmonic wave injection method is limited by the power factor is made up, and a method of double frequency current wave shape fitting can be further adopted, thus the acquisition of a reference current wave shape is further simplified, and the controlling is facilitated. As a voltage ripple on the energy storage capacitor has no requirement, needed capacity values of the energy storage capacitor and the filter capacitor are extremely small, a film capacitor or a ceramic capacitor and the like can be directly adopted, the driving power supply has the advantages of long service life and the like, and is suitable for places of a public driving power supply of an LED with large power.

The present invention is one kid of valve and is superior to available water valves without presure reducing function. The valve of the present invention has increased valve core, guide rod, compressing spring, limiting ring and tail cover inside the valve body. The conic valve core has notch on the side, lrge end opposite to the water inlet and small end fixed to the guide rod; the compressing spring has one end pushing against the small end of the valve core and the other end pushing against the tail cover, the limitingring determines the limit position of the valve core; and the valve body has inner wall in the shape fitting the conic valve core. The present invention has simple and compact structure and water flow buffering and pressure reducing effects.

A stretcher comprising an upper frame for placing a litter thereon, having casters on a front leg and a rear leg; a constant load spring serving as a slide mechanism for changing the position of the upper frame vertically; a pin lock mechanism for fixing the upper frame having been moved vertically at an arbitrary position; a trapezoidal concave-shaped fitting groove for fixing the head side of a litter to the front end part of the upper frame; and a C-shaped hook for fixing the foot side of the litter to the rear end part of the upper frame, characterized in that a vertically and longitudinally adjustable lock supporter engaging with a lock piece for fixing the stretcher installed on the cargo bed of an ambulance or the like is provided in the rear part of the stretcher, and the pin lock mechanism is mounted with an emergency lever.

A fuel-tank fitting includes a cylinder-shaped fitting body including a connecting end to be connected with a pipe and a free end to be disposed freely inside a fuel tank, a flange disposed on an outer peripheral surface of the fitting body, and fastened to an opening periphery of an installation opening opened through the fuel tank, and a check valve disposed in the fitting body, openable only in a direction heading from the connecting end of the fitting body to the free end thereof, and closable for sealing a fuel. The fitting body further includes a first portion sealing the check valve, a second portion fastened to a portion of the flange, a third portion connecting the first and second portions, and a fragile portion fracturing more preferentially than the first and second portions and the flange fracture while securing a fuel-sealing ability inside the fuel tank.

There is provided a fixing structure of a door weather strip which comprises a weather strip for a car and an insert clip for fixing a molding part of the weather strip to a door panel. The weather strip comprises a molding part having an insertion hole, and bag-shaped fitting grooves which are formed above the insertion hole at an outer side of the molding part, each having an opening at the lower end thereof. The insert clip comprises a plate-shaped body part having a clip part which projects laterally from the body part and is inserted into the insertion hole of the weather strip to fix the weather strip to the door panel. The insert clip also comprises pawl parts which stand upright from the outer end of the body part, and each pawl part tightly fits in a corresponding fitting groove of the weather strip.

The invention relates to a disc milling tool for milling or sawing metal blanks, with a disc-shaped base body (2) at or on its edge region with a plurality of movable Replacement cutting elements (3), such as in particular cemented carbide milling cutters, wherein a seat ( 10), and the design of the cutting element (3) is stress-fitted or form-fitted in abutment contact with the base (10) or against the base (10), or is loaded on it, so that at least this is perpendicular to the plane of the disc The cutting forces acting on the cutting elements (3) are respectively absorbed by the respective bases (10), wherein the bases (10) have a base bearing surface (11) which is defined by a raised edge (9), whereby the raised edge ( 9) and the base (10) form a loading recess open on one side for positively fitting loading of the cutting element (3).

The present invention relates to manufacture process of large span superposed beam of spliced plates. The present invention features that H-shaped monospars are first made through cutting one H-shaped web as the upper spar, cutting one other H-shaped web as the lower spar into the shape fitting to the upper spar, and welding wing plates to two webs to form two, one upper and one lower, H-shaped monospars, and then superposed and connected through fitting drilled holes. The present invention has high in-situ assembling efficiency and high product quality.

The invention discloses a flood forecasting method based on synthetic flow and shape fitting and relates to the technical field of hydrological simulation and forecasting. The method comprises the steps that a correlation between target cross section flow and upstream cross section flow is inquired and forecasted; distributed hydrological model modeling is conducted on forecasting drainage basin,and obtained runoff generation and confluence parameters of each calculation unit in a distributed hydrological model are calibrated; according to flood peak data of each time and flood volume data ofeach time of a forecasting target cross section, the corresponding relation of the flood peak and the flood volume is fit; corresponding exponential-type water subsiding curve parameters in the actual water subsiding process are inquired; a flow forecasting result of the forecasting target cross section in the confluence forecast period is obtained through flow synthesis; the forecasting flood volume and the forecasting flood peak of the forecasting target cross section in the flood on the spot are acquired; the corresponding flow forecasting result which meets a preset requirement is used asa final result of flood forecasting of each time. According to the flood forecasting method, the forecast period of flood forecasting is prolonged, so that the forecasting result is more reasonable and precise.

The present invention provides reconfigurable jet pump that is also inexpensive to fabricate. In one preferred embodiment of the present invention, a jet pump is formed as a nozzle and a diffuser attached to a standard tube or pipe T-shape fitting. Suitable T-shape fittings may have one or more joints where seals is formed by a compression/deformation of certain elements. The subject invention fulfills and important need for a jet pump that can be produced inexpensively and can be reconfigured at conform to new operating condition without the need to replace the entire unit. This feature is very important in fluid installations such as chemical plants where the physical parameters of the fluid (such as density, viscosity, bubble content, etc.) or the operating flow conditions (pressures, flow rates) are not precisely known and experimentation may be required to achieve best performance of the jet pump.

The invention discloses an acceleration noise filtering and integration method combined with spectrum energy shape fitting. The spectral curve in the close region of the peak dominant frequency is assumed to conform to the Gaussian function distribution. According to the cumulative energy variation of the noisy signal in the region, the parameters of the correlation Gaussian function are fitted, and the distribution range of the effective information of the dominant frequency is determined according to the principle of triple radius, and then the corresponding velocity and displacement signalare obtained through the frequency domain integration and inverse Fourier transform in the effective frequency band. Compared with the traditional frequency domain integration method, the method of the invention can realize automatic determination of the integration frequency band, can obtain higher integration precision under harmonic excitation and stable and good integration precision under random excitation, and has stronger anti-noise performance.

The invention discloses a human body and human face mesh template fitting method based on deformation graph, which can quickly transform the standard human body or the human face template into the scanning data and obtain a good fitting effect without any preparation in advance. The method comprises the following steps that firstly, feature point detection is carried out on the target scanning data, and manual correction is added, and then two sparse registration methods including rigid alignment and deformation image registration are adopted to realize the unification of the standard templateand the scanning data in the space and the transformation of the attitude, and finally non-rigid dense registration is conducted to perform shape fitting and surface detail reduction. According to the method, the deformation image registration is adopted for taking the frame driving technology to carry out preliminary fitting on the human body posture or the facial expression, and a non-rigid dense registration with a corresponding point relation is used for surface detail reduction under the condition that the posture or the expression is basically consistent. The method has the advantages of being simple in advance preparation, good in fitting effect and high in efficiency, and has good popularization and utilization prospect.

The invention provides a precise grinding track generation method based on a B spline. The method comprises steps that a workpiece CAD model is established; based on the workpiece CAD model, a grinding area is analyzed, and key grinding work path points are acquired; B spline interpolation for the acquired grinding work path points is carried out; whether the interpolation result satisfies precision requirements is determined; speed programming is carried out for the interpolation result, when the interpolation result is consistent with the precision requirements, actual work demands and self restrictions of robots are considered, and speed programming is carried out; the spline track is outputted. Compared with work tracks through linear and arc-shaped fitting, the method is advantaged in that higher fitting precision is realized.

The invention provides a coastline remote sensing calculation method for self-adaptive fitting of a profile form. The coastline remote sensing calculation method comprises the following steps: S1, extracting an instantaneous water side line and an artificial coastline from a coastline multi-temporal satellite remote sensing image; S2, segmenting and discretizing the water side line to obtain a water side line discrete point sequence of each profile; S3, completing tide level assignment of each profile water side line discrete point sequence; S4, judging the shape characteristics of the section, and determining the type of the section; S5, performing profile form fitting to obtain a form fitting equation of the profile; S6, calculating the position of an average heavy tide point of the section by utilizing a section shape fitting equation, and sequentially connecting the average heavy tide point along the direction of the coast to form an average heavy tide line; And S7, processing theaverage heavy tide and high tide line and the artificial shoreline by utilizing a spatial topological analysis method to obtain a remote sensing calculation shoreline. The method breaks through the assumption that the bank slope is single, and compared with a traditional method, the method has better applicability and higher accuracy.