49 results about "Central mass" patented technology

A putter-type club head (20) having a body (22) and a peripheral mass belt (23) is disclosed herein. The putter-type club head (20) has a body (22) that is preferably composed of an aluminum alloy. The body (22) preferably has a face portion (24), a crown portion (26), a sole portion (28) and a column portion (30). The face portion (24), the crown portion (26), the sole portion (28) and the peripheral mass belt (23) define a central aperture (32). The crown portion (26) extends rearward from the face portion (24). The central aperture (32) separates the crown portion (26) from the sole portion (28) and the face portion (24) from the central mass portion (80). The crown portion (26) preferably has an alignment means (40) thereon for aiming a golf ball during putting which preferably comprises three circular inserts (40a-c).

A golf putter head with traditional looks when viewed from above and an elevated center of gravity. The putter head comprises a central lower cavity portion under a weight flange, while the weight flange has been elevated towards the middle of the putter head, with mass relieved portions below the flange and on either side of the central mass relived cavity, with the bottom of the central weight relieved cavity forming the sole, and the upper side of the flange being compressed to maintain a traditional view from above.

A shock absorbing tool for use in pipelines and oil wells, particularly in combination with perforation guns comprises a central mass supported on two springs between the end terminal members. The shock wave is absorbed in the free oscillation of the mass. The mass is constituted by a piston assembly. A steel rope permits the shock absorbing tool to be maneuvered within the bore hole without damage to the springs.

A method and apparatus detects one or more spiculated masses in an image using a processor. The image is received in the processor. The received image is filtered using one or more Gaussian filters to detect one or more central mass regions. The received image is also filtered using one or more spiculated lesion filters to detect where the one or more spiculated masses converge. In addition, the received image is filtered using one or more Difference-of-Gaussian filters to suppress one or more linear structures. An enhanced image showing the detected spiculated masses is created by combining an output from all of the filtering steps. The enhanced image is then provided to an output of the processor.

The invention discloses a monolithic integrated six-degree-of-freedom micro-inertial measurement unit and a processing method thereof. The monolithic integrated six-degree-of-freedom micro-inertial measurement unit comprises a main unit structure mounted in the center of a glass substrate in a bonding manner, wherein the main unit structure is square and comprises a triaxial accelerometer unit and a triaxial gyroscope unit; the triaxial gyroscope unit comprises four square frames same in structure; a Z-axis detection structure, a driving structure, a Y-axis detection structure and an X-axis detection structure are connected to the inner side edge of each square frame; the triaxial accelerometer unit comprises a central mass block positioned in the center of the main unit structure and twisting-type mass blocks mounted at four top angles of the main unit structure respectively. The monolithic integrated six-degree-of-freedom micro-inertial measurement unit has the advantages of high measurement precision, strong reliability, high panel utilization rate, full decoupling, small mass, low cost, simple and ingenious volumetric structure and the like, can be used for measuring accelerated speeds and angular speeds in three directions at the same time, and is strong in applicability, thereby having a wide market prospect.

The invention relates to a brake device of a pipe cleaner, which can reduce the running speed of the pipe cleaner and prevent the pipe cleaner from causing an impact. The brake device adopts the technical scheme as follows: a speed acquisition wheel presses against the inner wall of a pipeline by virtue of a hydraulic pressure and drives a hydraulic pump to work, the hydraulic pump drives a central mass block to rotate, a centrifugal force of the mass block is transmitted to a brake block through a link mechanism to generate a pressing force, and the pressing force is directly proportional to the running speed of the pipe cleaner. The brake device of the pipe cleaner is only needed to be arranged on the rear side of the pipe cleaner, can carry detection equipment and is suitable for various pipe cleaning operations.

An Angular-rate detecting apparatus includes four mass portions connected by at least one support beam, and the mass portions have respective individual vibration generators disposed thereon. The individual vibration generators excite the normal vibration mode by vibrating pairs of the mass portions adjacent to each other in opposite phases. Thus, the mass portions are forcibly vibrated in the normal vibration mode. Angular rate detectors detect displacements of inner frames of central mass portions as an angular rate about an axis perpendicular to a detection direction and also to a vibration direction when the inner frames are displaced in the detection direction while vibrating in the vibration direction.

The invention provides a decoupling micro-machine gyro, which comprises a glass substrate (1), a metal electrode (8) that covers the surface of the glass substrate (1), a movable central mass block (2) that is connected with a drive comb tooth structure (3) by an inside detection supporting beam (13) and with a detection comb tooth structure (4) by an inside drive supporting beam (14). The gyro is characterized in that the central mass block (2) and the metal electrode (8) are in a grate shape and therefore, when a capacitor with the detection comb tooth structure changes, a capacitor between the central mass block (2) and the metal electrode (8) also changes, thus causing the gyro to be capable of detecting the increased capacitance quantity at work and improving the sensitivity of the gyro.

The invention discloses a circuit for automatically regulating detecting end resonant frequency of a capacitor type micro-electromechanical systems (MEMS) gyroscope. The capacitor type MEMS gyroscope comprises a central mass block, a drive end and a detecting end, wherein the drive end comprises a drive end electrode, the detecting end comprises a detecting end electrode, and the detecting end electrode is provided with an input end for inputting a bias voltage (Vi) to form capacitance between the central mass block and the detecting end electrode. The circuit regulates the bias voltage (Vi) according to difference between output voltage signals of the drive end and the output voltage signals of the detecting end, and thus the detecting end resonant frequency is regulated. The detecting end resonant frequency of the capacitor type MEMS gyroscope van be regulated automatically and is enabled to conform to the frequency of the drive end signals, and mismatch caused by process allowance or changes of working environment is corrected.

The invention provides a piezoelectric vibratory energy harvester, which comprises a central mounting structure, four side support beams, piezoelectric layers and a central mass block, wherein the central mounting structure comprises square supporting plates and four centrosymmetric mounting arms; the four side support beams are fabricated by four rectangular metal beams with the same shape; mounting holes for mounting are formed at the two ends; the piezoelectric layers are formed by four piezoelectric ceramic sheets and pasted on upper surfaces of the four support beams; and the central mass block is superimposed by a plurality of metal sheets and mounted in an area formed by the square supporting plates of the central mounting structure. According to the energy harvester, the mass of the central mass block is increased, the structure layout is arranged reasonably, the strain distribution of the piezoelectric layers is improved, and the adaptability of the designed energy harvester to a vibration source is improved, so that the energy harvester has a better practical value.

A hybrid power source and control moment gyroscope (“HPCMG”) is disclosed. The HPCMG includes a control moment gyroscope (“CMG”), a first conductive bearing, and a second conductive bearing. The CMG includes a first transverse gimbal assembly, a central mass that produces a voltage potential, and a second gimbal assembly rotationally connected to the first transverse gimbal assembly. The first transverse gimbal assembly is rotationally connected to the central mass along a first axis of rotation and the central mass is configured to spin about the first axis of rotation and the first transverse gimbal assembly is configured to rotate about a second axis of rotation of the second gimbal assembly. The first conductive bearing rotationally connects the central mass with the first position of the first transverse gimbal assembly along the first axis of rotation.

The invention discloses a composite board for low-frequency broadband noise reduction of a compartment structure, and belongs to the technical field of acoustic function materials for noise absorbing.A plurality of sound permeable holes are formed in a perforated plate. The perforated Plate, a local resonance plate and a back plate are arranged in parallel from inside to outside. A plurality of supporting plates are crossed transversely and longitudinally and are fixed between the perforated plate and a base plate of the local resonance plate and between the base plate of the local resonanceplate and the back plate. The base plate is divided by the plurality of supporting plates into a plurality of sound absorbing units. Each sound absorbing unit is internally provided with a film vibrator. Each film vibrator comprises a flexible polymer film and a central mass block. The flexible polymer films are fixedly connected with the base plate. The central mass blocks are attached to the centers of the flexible polymer films. The composite board can be conveniently installed in an engineering environment with strict volume requirements, the noise reduction effect is obvious, the bandwidth of the low-frequency sound absorbing section of the compartment structure can be widened, and low-frequency broadband noise reduction is realized.

The invention relates to a piezoelectric multi-direction vibration energy acquisition device, and belongs to the technical field of new energy and power generation. A frame is arranged on a base via abolt, a side plate is arranged on each surface via a bolt, an inertia block is connected with each side plate via a buffer spring, a piezoelectric oscillator group is fixedly at the periphery of eachinertia block, each inertia block is connected with a central mass block via a spring, the piezoelectric oscillator group is formed by pasting a metal substrate and a piezoelectric chip, each piezoelectric oscillator group is connected in parallel via a wire, parallel connection means that each metal substrate is connected via a wire and each piezoelectric hip is connected via a wire, a rectification circuit and an energy storage device are fixedly arranged on the base, and the rectification circuit is connected with the piezoelectric oscillator and the energy storage device via a wire. The piezoelectric multi-direction vibration energy acquisition device has the advantages that low-frequency vibration energy can be achieved in an arbitrary direction, and the piezoelectric multi-directionvibration energy acquisition device has the characteristics of high reliability and high energy efficiency.

The invention provides a 3D co-vibration spherical vector hydrophone with an asymmetrical structure which includes an upper half spherical shell, a lower half spherical shell, an output cable and a core vibrator; the core vibrator consists of three piezoelectric accelerometers which are asymmetrically arranged on a central mass block; the core vibrator is arranged in a supporting flange; the supporting flange is clamped between the upper half spherical shell and the lower half spherical shell by a bolt and a seal ring. The quantities of the internal piezoelectric accelerometers needed by the hydrophone of the invention are less, the integral average density is low and the physical dimension is small; besides, the internal piezoelectric accelerometers have better cosine directivity and phase characteristics. Therefore, the low-frequency vector hydrophone not only has the advantages of small size, light weight and good directivity, but also has the advantages of good channel sensitivity and phase characteristics; the hydrophone can solve the design problem of a sonar array. The 3D co-vibration spherical vector hydrophone with the asymmetrical structure can be broadly applied into each field of underwater sound like a sonobuoy system, a low noise measuring system, a double-base sonar system, a torpedoe navigation system, an underwater communication system, a responder, and the like, to accomplish a lower frequency measuring task.

The invention aims to provide a broadband oscillator cross drive underwater acoustic transducer which comprises an external shell, wherein the external shell is formed by arranging four straight beams and four arc-shaped beams in an enclosed mode; the included angle formed by adjacent straight beams is 90 degrees, and one arc-shaped beam is arranged between every two adjacent straight beams in a connected mode; each arc-shaped beam is of an inward concave arc shape; a central mass block is arranged at the center inside the external shell, wherein a group of excitation materials is installed between the central mass block and each straight beam; an upper cover plate is installed on the top of the external shell, a lower cover plate is installed at the bottom of the external shell, the upper cover plate is connected with the lower cover plate through threaded rods to seal the external shell, and the upper cover plate is provided with a cable which is communicated with the excitation materials. By adopting the hybrid excitation principle, the operation bandwidth of an oscillator cross drive transducer is increased remarkably; the broadband oscillator cross drive underwater acoustic transducer can be applied to hydroacoustic positioning, detection, navigation, communication, hydrologic condition testing, marine resource exploration and other fields.

The invention discloses a three-dimensional vector hydrophone capable of suppressing vibration in X and Y directions. The three-dimensional vector hydrophone capable of suppressing vibration in the Xand Y directions comprises a substrate and cilia, wherein the substrate is composed of a central mass block, beams and a frame, and a piezoresistor is arranged at the tail end of each beam. Each edgeof the center mass block is suspended on the frame by every two beams, that is, the right edge of the center mass block, the upper edge of the center mass block, the left edge of the center mass blockand the lower edge of the center mass block are separately connected with the frame by the beams, and the center mass block is suspended on the frame. A certain gap is reserved among the mass block,the beams and the frame, and the overload resistance is achieved by limiting the displacement of the central mass block in the X and Y directions in a cartesian coordinate system; a certain gap is reserved between the central mass block and a lower cover plate, and the overload resistance is achieved by limiting the displacement of the central mass block in the Z direction in cartesian coordinates; and as the thickness and area of the central mass become larger, the bending moment of the mass block to the beams can offset the bending moment of the cilia to the beams when the hydrophone is subjected to vibration signals so as to reduce the vibration sensitivity of the hydrophone.

The invention relates to a cardiechema electrocardio micro in-situ synchronous detecting sensor based on an MEMS technology. The sensor comprises a shell, wherein the shell is fixedly provided with atransaudient cap, the shell is internally provided with a supporting plate, the supporting plate is provided with an MEMS sonic transducer microstructure, and the MEMS sonic transducer microstructureis composed of a supporting frame, a central mass block, cantilever beams and four varistors; the periphery of the shell is sleeved with a ring of electrocardiographic electrode, and the periphery ofthe electrocardiographic electrode is provided with a ring of sucking disc; the electrocardiographic electrode comprises a flexible conductive substrate of which the top face is designed in a pinpointtype microarray, a metal seed layer and a metal layer are sprayed sequentially on the top face of the flexible conductive substrate, and the back face of the flexible conductive substrate is coated with a conductive silver paste layer. Compared with a traditional echometer or electrocardiogram sensor, the sensor utilizes the MEMS technology to integrate cardiechema and electrocardio, thereby achieving multi-parameter joint analysis and diagnosis of a coronary heart disease, the sensitivity is high, the volume is small, batch processing can be achieved, and the cost is low.

The invention discloses a silicon capacitor type accelerometer of mechanical modulation. The accelerometer comprises a substrate, a silicon chip and metal electrodes. The silicon chip comprises a central mass block (100); the central mass block (100) comprises an internal intermediate-frequency movable part (601) and an external low-frequency movable part (602) surrounding the internal intermediate-frequency movable part (601), and the internal intermediate-frequency movable part (601) is connected with the external low-frequency movable part (602) via beams (701). The metal electrodes include mass block electrodes (101), a negative feedback electrode (202), a positive feedback electrode (201), positive driving electrodes (501), negative driving electrodes (502), positive driving detection electrodes (401), negative driving detection electrodes (402), a positive external acceleration detection anode (301) and a negative external acceleration detection anode (302), wherein the mass block electrodes (101) are connected with the central mass block (100) via beams (702).

The invention relates to a three-axis micro-electromechanical sensor. The three-axis micro-electromechanical sensor comprises a first-axis fixed electrode, a second-axis fixed electrode, a third-axis fixed electrode, a movable electrode frame, a spring and a fixed column, wherein the movable electrode frame comprises a first-axis movable electrode, a second-axis movable electrode, a third-axis movable electrode and a connecting element for connecting the first-axis movable electrode, the second-axis movable electrode and the third-axis movable electrode together; the first-axis movable electrode and the first-axis fixed electrode form a first capacitor on a first axis; the second-axis movable electrode and the second-axis fixed electrode form a second capacitor on a second axis; the third-axis movable electrode and the third-axis fixed electrode form a third capacitor on a third axis; the connecting element comprises a central mass body which is connected with the first-axis movable electrode, the second-axis movable electrode or the third-axis movable electrode and is provided with an outer ring and a first connecting section connected with the adjacent edge of the outer ring; the spring is connected with the movable electrode frame; the fixed column is connected with the spring; and the first axis, the second axis and the third axis are not parallel to one another to define a three-dimensional coordinate system.

A bottle closure includes a cap having a cylindrical shaped body and a closed end. The bottle closure further includes a liner disposed on an interior surface of the closed end of the cap, the liner for contacting a bottle opening. The closed end of the cap further includes a recess formed therein for urging a central portion of the liner into a bottle opening when applied thereto (e.g., by a bottling press). The bottle closure may further include or have applied thereto a support structure or central mass to support the recess during the bottling process and thereafter.

The present invention provides an algorithm to detect and trace the spicules of a mass density in digital mammograms using an adaptive threshold edge algorithm and a flood-fill segmentation algorithm. Elongation criteria are used to remove false edges that do not radiate from a central mass margin. The algorithm works on a central mass border and spicules feature map that contains a subset of the pixels from the source image, so processing time is fast enough for use in a mammography CAD server and for real-time computation within a digital mammography workstation.