中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

6 records (took 0.017 seconds)

    Rotating head apparatus including a thrust gas bearing
    1.
    发明授权
    Rotating head apparatus including a thrust gas bearing 失效
    旋转头设备，包括气压轴承

    公开(公告)号：US3867725A

    公开(公告)日：1975-02-18

    申请号：US40256273

    申请日：1973-10-01

    Applicant: IBM

    Inventor： JANSSEN DONOVAN M ,  STEDMAN DAVID

    IPC: F16C32/06 ,  G11B5/17 ,  G11B5/52 ,  G11B5/53 ,  G11B17/32 ,  G11B5/60

    CPC classification number: G11B5/53 ,  F16C32/0603 ,  F16C32/0692 ,  G11B5/17

    Abstract: Two spacially cooperating rotary transformer windings are supported with accurate mechanical separation by a thrust gas bearing having a fixed position hydrostatic gas bearing member and a movable piston which integrally carries a movable hydrostatic gas bearing member. One transformer winding is carried by the fixed bearing member. The other cooperating transformer winding is supported by a headwheel. This headwheel is air bearing supported by the opposing forces supplied by the fixed and the movable bearing members, respectively. Dimensional manufacturing and operating tolerance is accomodated by movement of the piston, to thereby accurately maintain a desired mechanical spacing between the two transformer windings.

    Abstract translation: 两个空间配合的旋转变压器绕组通过具有固定位置静压气体轴承构件的推力气体轴承和一体地携带可动静液压气体轴承构件的可移动活塞而被精确地机械分离地支撑。 一个变压器绕组由固定轴承构件承载。 另一个配套的变压器绕组由头轮支撑。 该前轮是分别由固定和可移动轴承部件提供的相对力支撑的空气轴承。 尺寸制造和操作公差由活塞的移动所适应，从而精确地保持两个变压器绕组之间的期望的机械间隔。

    2.
    发明专利
    未知

    公开(公告)号：DE2446441A1

    公开(公告)日：1975-04-10

    申请号：DE2446441

    申请日：1974-09-28

    Applicant: IBM

    Inventor： JANSSEN DONOVAN MILO ,  STEDMAN DAVID

    IPC: F16C32/06 ,  G11B5/17 ,  G11B5/52 ,  G11B5/53 ,  G11B17/32 ,  G11B5/60

    Abstract: Two spacially cooperating rotary transformer windings are supported with accurate mechanical separation by a thrust gas bearing having a fixed position hydrostatic gas bearing member and a movable piston which integrally carries a movable hydrostatic gas bearing member. One transformer winding is carried by the fixed bearing member. The other cooperating transformer winding is supported by a headwheel. This headwheel is air bearing supported by the opposing forces supplied by the fixed and the movable bearing members, respectively. Dimensional manufacturing and operating tolerance is accomodated by movement of the piston, to thereby accurately maintain a desired mechanical spacing between the two transformer windings.

    TAPE MOTION CONTROL FOR REEL-TO-REEL DRIVE
    4.
    发明专利
    TAPE MOTION CONTROL FOR REEL-TO-REEL DRIVE 未知

    公开(公告)号：CA1097799A

    公开(公告)日：1981-03-17

    申请号：CA299885

    申请日：1978-03-29

    Applicant: IBM

    Inventor： EIGE JOHN J ,  PATEL ARVIND M ,  ROBERTS SPENCER D ,  STEDMAN DAVID

    IPC: G11B15/43 ,  B65H23/18 ,  G11B15/46 ,  G11B15/48 ,  G11B15/54 ,  G11B27/13 ,  G11B5/00 ,  G03B1/04

    Abstract: TAPE MOTION CONTROL FOR REEL-TO-REEL DRIVE High tape acceleration rates are achieved in an unbuffered capstanless tape drive system by a tape motion control apparatus employing separate drive motors for each reel of a reel-to-reel tape transport. Tape moves from one reel past a read/write head and a tape tension sensor to the other reel, there being no tachometer in the tape feed path. A tachometer on one reel shaft provides a large number of pulses per revolution which pulses are counted by a counter; and a tachometer on the other reel shaft provides only one pulse per revolution, which pulse gates out the count then accumulated in the counter for actuating means to provide motor acceleration currents of a magnitude corresponding to said accumulated count according to a predetermined servo algorithm for controlling rotation of both reels. A tape radius constant corresponding to the actual length and thickness of tape in the system is calculated during initial wrap of tape onto the takeup reel. Tension is tightly controlled by an analog tension sensor and servo system.

Patent Agency Ranking