39results about How to "Reduce and eliminate vibration" patented technology

A cord material suitable for use in lined textile structures with a gliding component includes a plurality of uniform strands, and a deviant strand. The deviant strand is different from the uniform strands in some characteristic affecting aerodynamic or hydrodynamic properties of the cord, such as size or surface properties. Each uniform strand can have a substantially equal cross section area, while the deviant strand has a cross section area at least five times greater than one of the uniform strands. The strands can be braided or woven together. A major benefit of the material can be that vibration induced drag is significantly reduced or eliminated in lines made with the material. Another advantage is that lines made from the material can have more consistent, predictable line drag, which can improve the quality of handling.

The present invention relates to an anti-vibration arrangement (10) for a power sander (1) which comprises a housing (2), a motor (4) arranged in the housing (2), a rotary drive shaft (11), a first outer or ring-shaped pad surface (16) for attaching a first sanding paper (8) and a second inner or circular pad surface (22) for attaching a second sanding paper (9). The anti-vibration arrangement (10) serves to transfer energy from the motor (4) to the pads (16, 22) with out-of-phase motions to dynamically compensate for inertial and friction forces. For this purpose, twin cams (18a, 18b) are fixed on the rotary drive shaft (11). The cams (18a, 18b) rotate the central axes (15, 21) of the pads (16, 22) about the rotary drive shaft axis (12) with a phase differential of typically 180°. Vibration which would otherwise be transmitted to the rotary drive shaft (11) and from there to the operator of the machine (1) are drastically reduced irrespective of whether or not the operator increases the applied force (1) in order to increase the sanding depth or to speed up the sanding operation.

A muffler for reducing the sounds of combustion gases exhausted from an internal combustion engine including an elongated fluid passage extending between an inlet and an outlet such that the outlet is in fluid communication with the inlet. Further, the inlet being connectable with the gases exhausted from the engine and the outlet being connectable with the atmosphere. The muffler further including an outer tank surrounding the passage and a tubular connector having a first end in fluid connection with the passage and a second end in fluid connection with the tank such that the connector produces a fluid connection between the passage and the tank. The connectors having a perforated resistance plate to restrict the fluid flow between said passage and said sound chamber thereby reducing the severity of the sound or fluid pulses entering and exiting said sound chamber, perforations in said perforated plate forming an open portion of said plate and said open portion being less than 60 percent.

A washing machine including an attachment groove on or in a top portion or surface of a cabinet; a joint member coupled to the cabinet and in the attachment groove; a door configured to open and close an inlet of the cabinet, and a damper connected to the joint member and configured to adjust or control a rotational speed of the door.

The invention discloses a positioning device for a workpiece fixture in ion beam polishing equipment. The scheme includes that an annular positioning plate and the chuck type workpiece fixture interact with each other, and the annular positioning plate used as a positioning reference is horizontally and fixedly mounted, so that the workpiece fixture can be positioned by the positioning device. The positioning device is characterized in that a convex horizontal positioning plane, lifting devices and positioning pins are arranged on the upper surface of the annular positioning plate, the lifting devices and the positioning pins are symmetrically arranged along the peripheral edge of the positioning plate, a positioning plane which can cling to the horizontal positioning plane on the positioning plate is arranged on the fixture, and positioning holes which can be in one-to-one correspondence with the positioning pins on the positioning plate are formed in the fixture. The lifting devices lift the fixture with a clamped workpiece to a certain altitude and then slowly descend, so that the two positioning planes can completely cling to each other, all the positioning pins can be inserted into the positioning holes, and the workpiece fixture can be positioned. The positioning device has the advantages that positioning references are arranged on the same component, so that the workpiece fixture can be easily adjusted and can be completely positioned under the effect of the gravity of the fixture as long as the references are effectively adjusted, and the positioning device is simple in action; the positioning movement speed is controllable, so that positioning operation can be slowly carried out, and vibration can be greatly reduced and eliminated.

An isolating pulley comprising a hub comprising an inertia carrier, the inertia carrier having an inner surface, a spring carrier journalled to the hub, the spring carrier having a releasable driving engagement with the inertia carrier, a pulley journalled to the hub, a spring drivingly engaged between the spring carrier and the pulley, a clutch spring having a frictional engagement with the inner surface, and which frictional engagement is partially releasable upon a temporary, pressing contact of the pulley upon the clutch spring.

A shower door pulley device is provided which comprises a pulley seat installed on a movable door; a pulley bracket having at least one pulley and an elastic member; a pressing block to press said elastic member and slidable relative to the pulley seat; a sliding cover slidablely mounted on said pulley seat, supporting the pulley bracket.

A rotor for turbomachines with shrouded blades comprising a row of a plurality of blades covered by an external ring, coaxial to said row of blades; the external ring being composed of a plurality of sectors, commonly referred to as shrouds, which are adjacent to one another and transversely and circumferentially attached to the end of respective blades; a damping member being arranged so as to straddle a respective pair of adjacent sectors and being pushed, in use, against radially internal surfaces of the sectors of the pair of adjacent sectors.

An electric tool includes a rotary wheel driven to rotate around a central axis thereof, an action member configured to bear a cutter of the electric tool, and a counterweight. The rotary wheel drives the action member such that it reciprocates linearly in a first direction. The rotary wheel simultaneously drives the counterweight such that it not only reciprocates linearly in the first direction in an opposite manner to the action member, but also performs reciprocating swinging movement in a plane perpendicular to the central axis. The first direction is parallel to the plane.

The present invention refers to a vibration damping connector (100) for reducing vibrations between a vibration prone system and an optical imaging system, said vibration damping connector comprising a first part (1) adapted to be connected to said optical imaging system, a second part (2) adapted to be connected to said vibration prone system, and at least one first shock absorbing element (3), a portion of said first part (1) is arranged inside a portion of said second part (2) along a central axis (A) or a portion of said second part (2) is arranged inside a portion of said first part (1) along a central axis (A) and said at least one flexible shock absorbing element (3) is arranged between said first part (1) and said second part (2), said vibration damping connector (100) further comprises at least one fastening device (4) for fastening said first part (1) to said second part (2) and said fastening device (2) presses said first part(1) to said second part (2) via a second shock absorbing element (5). Furthermore, use of the vibration damping. connector, in an optical system is disclosed.

A method to improve vibration isolation in semiconductor process level inhibits vibration frequencies transmitted though building structure from production tools, pumps, compressors, chillers, AHUs (Air Handling Units), and footfalls traffic on raised floor system on to tool pedestals and pads from affecting semiconductor fabrication processes. Sound proofing material and foam is injected into hollow steel and/or aluminum support members and sound proofing adhesives and/or caulking are applied at points of connections in conjunction with mechanical fastening. In various applications, placement of shaped wielded rod utilized for dissipating vibration energy in center of hollow member which is surrounded with sound proofing material and/or foam. In addition, utilization of this method for dedicated MEP (mechanical, electrical, plumbing) support pedestal, only attach as support for MEP lines, as to improve isolation of low frequency vibration.

A lens drive device has (i) an objective lens and (ii) a lens holder, to a side face of which coils for drive control are attached. The surface where the coils are adhered, or the side surface, is an irregular surface where a recess/projection section for restricting the direction of flow of an adhesive is formed. The coils and the lens holder are integrally formed together by the adhesive with the recess/projection section in between.

A vehicle, including: an electric motor operatively connected to at least one driving wheel of the vehicle, and a frame structure including first and second side members extending in a longitudinal direction along opposite sides of the vehicle and at least one cross member extending in a transversal direction of the vehicle and being connected to the first and second side members, wherein the electric motor is supported by the frame structure such that the electric motor is arranged in a front portion of the vehicle in association with a pair of front wheels of the vehicle, and wherein each of the side members, at least along a deformable section thereof, is configured to deform by bending in an inwards and/or outwards transversal direction when compressed by a longitudinally directed force exceeding a threshold value, such as in case the vehicle is subject to a sufficiently energetic frontal collision.

An electric vehicle transmission method includes the steps of: detecting a gear-shift command; judging if the gear-shift command is in conflict, if it is in conflict, then it returns back to the step of detecting the gear-shift command while if it is not in conflict, then proceeds to the next step; proceeding to a synchronized position, a dispelling fork drives a synchronizer to make the synchronizer move from the original gear position to a synchronized position, and the dispelling fork does not move within a synchronized time; and proceeding to a target position, the dispelling fork drives the synchronizer again to make the synchronizer move to the target gear position.

A method to improve vibration isolation in semiconductor process level inhibits vibration frequencies transmitted though building structure from production tools, pumps, compressors, chillers, AHUs (Air Handling Units), and footfalls traffic on raised floor system on to tool pedestals and pads from affecting semiconductor fabrication processes. The tool pedestal/pad for modern semiconductor FABs are required have very small tolerance to ambient vibration. Therefore, reduction and isolation of vibration of tool pedestal/pad is the key requirement for safe, reliable and uninterrupted operation of modern semiconductor FABs. Sound proofing material and foam is injected into hollow steel and/or aluminum support members and sound proofing adhesives and/or caulking are applied at points of connections in conjunction with mechanical fastening. In various applications, placement of shaped wielded rod utilized for dissipating vibration energy in center of hollow member which is surrounded with sound proofing material and/or foam.

A method of increasing the spatial uniformity of the detected intensity of a beam of light from a laser in a system including the laser and a light detector. In one embodiment the method includes the steps of generating a beam of light with the laser; and moving the beam of light and the light detector relative to each other, such that the detector averages the spatial intensity of the beam of light over time. In another embodiment the invention relates to a system for increasing the detected spatial uniformity of the intensity of a beam of light. In one embodiment the system comprises a light detector; a laser source for generating the beam of light; and a means for moving the beam of light and the detector relative to one another such that the detector averages the intensity of the light beam over time.