Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

189results about How to "Easy to withdraw" patented technology

Expandable tip atherectomy method and apparatus

A device for removing obstructions from vessels or small openings in the body, comprising a rotatable ablator tip which is guided to the obstruction in a reduced diameter configuration, expanded and rotated to remove the obstruction, and contracted to remove the device from the body. The variably expandable abrasive tip coil in one embodiment of the invention is actuated by a piston means disposed within the coil. A pair of collars is attached to the ends of the coil, and the piston effects relative longitudinal axial movement of the collars and, hence, the respective ends of the coil tip. When the ends of the coil tip are so moved with respect to one another, expansion and contraction of the diameter of the coil tip results. In another embodiment of the invention, the expansion tip coil is actuated by an expandable and contractible bellows means disposed within the coil, instead of the piston means. In another embodiment of the invention, the expansion and contraction of the coil tip are effected by longitudinal axial movement of an internal coil attached to one end of the coil tip, within an outer coil attached to the other end of the coil tip. In another embodiment of the invention, expansion and contraction of the coil tip are effected by an inflatable balloon disposed within the coil tip. The balloon expansion means enlarges preferably at the central portion of the coil to make a bulge. +RR The questions raised in reexamination request No. 90 / 003,360, filed Mar. 15, 1994, and 90 / 003,723 filed Feb. 14, 1995, have been considered and the results thereof are reflected in this reissue patent which constitutes the reexamination certificate required by 35 U.S.C. 307 as provided in 37 CFR 1.570(e).
Owner:ZACCA NADIM M

Intravascular Device

A device (1), e.g. an intravascular device, for removing an element, e.g. vascular occluding element (33), from within a lumen, e.g. a vascular lumen of a patient is described, comprising a tubular catheter body (4) made of a flexible material, with a proximal end (3), which in use is located outside of the body of the patient, and a distal end (2), which in use is located in the or at the lumen of the patient, and with a central duct (40) through which further devices (7, 14, 35) can be guided to the lumen of the patient from the outside of the patient, wherein the tubular catheter body (4) comprises a distal expansion area (25), which expansion area (25) has a contracted or folded state (26) in which the outside diameter of the expansion area (25) is substantially equal to the outside diameter of the tubular catheter body (4), and which expansion area (25) can be brought into a stiff expanded state (27) in the or at the lumen of the patient, wherein the expanded state (27) comprises an at least partially conical portion opening towards the distal end, such that an occluding element (33) can be drawn into the expansion area (25) in its expanded state (27). Such a device may be used for removal of an occluding implant which had been positioned incorrectly before or which had moved. Furthermore methods for making such a device (1) are disclosed as well as methods for using such adevice.
Owner:CARAG AG

Improved withdrawing technology for hydraulic supports on fully mechanized coal face

ActiveCN102900444AParallel work locationsEasy to withdrawProps/chocksCoal miningChemistry
The invention relates to a using technology of coal mining equipment, and in particular relates to an improved withdrawing technology for hydraulic supports on a fully mechanized coal face. The improved withdrawing technology solves the technical problem of rapidly withdrawing all the hydraulic supports on the fully mechanized coal face and comprises the following steps of: 1. preparation work before withdrawing the supports on the coal face; 2; adjustment and withdrawal of sheltering frames; and 3. withdrawal of the hydraulic supports on the coal face: firstly withdrawing the supports by using withdrawal winches on the coal face, dragging the supports to a support loading platform for entrucking by using the winch at the 50th support after withdrawing the supports on the coal face from an original position by using the support withdrawal winches, carrying away the supports by using the support loading winches on the coal face and support loading platform wagons in a rail transport manner, and completing the withdrawal of the supports after circulating three times. The technical scheme which is put into practice by professional technical staff has the advantages of being rapid and safe, saving the cost, reducing the consumption and having very important significance for improving the production efficiency of mines and increasing the device availability.
Owner:SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD

Novel circular tube slitting mill

The invention discloses a novel circular-section tube slitting mill comprising transmission members respectively arranged on a transmission shaft and transmission members which are correspond to a disk shaft and connected with rotable loops located thereon. A hobbing device is arranged inside a radial sliding chute of the disk head face of the disk shaft, wherein, the hobbing device is provided with an internal circle that is a cam ring, and an external circle is a rotatable loop hobbing a bull gear and is installed on the external circle ring of the disk of the disk shaft; the rotatable loop, disk shaft and a stander are provided with a start-and-retract control device; and a clamping device is installed at the tubular product feeding end of the stander. As the rotatable loop directly rotates along the external circle of the disk shaft, the axial size is reduced, the stress condition is obviously improved and the vibration is avoided; as the start-and-retract control device is provided, accurate slitting moment of cluster is guaranteed at the time of starting, and start impact is avoided; when the hobbing device retracts, the device stops at a maximum retracting position of the cam ring; meanwhile, the clamping device is added and installed, thereby improving the stability and centering reliability for clamping tubular products.
Owner:YANSHAN UNIV

Mechanical gear machining device and using method thereof

The invention discloses a mechanical gear machining device which comprises an installation plate, a supporting plate, a horizontal air cylinder, a clamping groove, a brush, a supporting column, a fixing nut, a clamping seat, limiting blocks, a sliding groove, a connection block, a vertical air cylinder, sliding rails, a sliding table, a guide rail, a sliding seat, a rotary table, a fixed column, a tool, a motor, an adjusting column, an installation block and an operation handle. The mechanical gear machining device has the beneficial effects that gear chamfering, tooth crest chamfering and the like can be conducted in a multi-angle mode; the sliding table can slide on the sliding rails under the traction of the horizontal air cylinder, and the tool can conduct multi-face machining on a gear conveniently during machining; the two rubber limiting blocks are fixed to the side edges, close to the supporting plate, of the sliding table, so that the sliding table is prevented from knocking into the supporting plate during movement; the brush is a wire brush and can be detached freely from the interior of the clamping groove, and deburring treatment can be conducted on the gear through the wire brush; the position of the installation block can be adjusted up and down on the fixed column, and specific adjustment can be conducted on gears of different specifications.
Owner:CHONGQING JIANGJIN HUAMAO MACHINERY CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products