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16 条记录 (耗时 0.014 秒)

    Pickup truck bed cover
    12.
    发明授权
    Pickup truck bed cover 失效
    皮卡车床罩

    公开(公告)号：US6095587A

    公开(公告)日：2000-08-01

    申请号：US190933

    申请日：1998-11-12

    申请人： Harold Shirlee ,  John Sargent ,  Walter Davis, III

    发明人： Harold Shirlee ,  John Sargent ,  Walter Davis, III

    IPC分类号： B60J7/08 ,  B60P7/02

    CPC分类号： B60J7/1621 ,  B60J5/108 ,  B60J5/125

    摘要： A tonneau cover assembly for selectively covering a pickup truck bed. The truck bed has a left sidewall, a right sidewall, a floor and a tailgate. The tonneau cover assembly comprises a left cover and a right cover, a plurality of hinges attaching the covers to the sidewalls, a pair of rods attached to the inside of the sidewalls, and a pair of springs coiled on the rods. The springs have end portions that extend over the inside of the sidewalls, and a center portion that extends over the sidewalls. The tonneau cover assembly further has a locking mechanism to securedly lock the covers flat against the top of the truck bed.

    摘要翻译： 一种用于选择性地覆盖皮卡车床的吨位盖组件。 卡车床有一个左侧壁，一个右侧壁，一个地板和一个后挡板。 吨罩组件包括左盖和右盖，将盖连接到侧壁的多个铰链，连接到侧壁内侧的一对杆以及在杆上卷绕的一对弹簧。 弹簧具有在侧壁的内侧延伸的端部和在侧壁上延伸的中心部分。 该吨位盖组件还具有锁定机构，以将盖平坦地锁定在卡车顶部的顶部上。

    Band-pass sigma-delta converter and commutating filter therefor
    13.
    发明授权
    Band-pass sigma-delta converter and commutating filter therefor 失效

    公开(公告)号：US5768315A

    公开(公告)日：1998-06-16

    申请号：US684716

    申请日：1996-07-22

    申请人： James Gregory Mittel ,  Raymond Louis Barrett, Jr. ,  Walter Davis

    发明人： James Gregory Mittel ,  Raymond Louis Barrett, Jr. ,  Walter Davis

    IPC分类号： H03H19/00 ,  H03M3/02 ,  H04B14/06

    CPC分类号： H03H19/004 ,  H03M3/404 ,  H03M3/43 ,  H03M3/454

    摘要： A communication receiver (600) utilizes a band-pass sigma-delta converter (100) for receiving a radio signal. The band-pass sigma-delta converter (100) includes a comparator (106) coupled to an adder-filter (101) for making a comparison between a predetermined reference level (110) and an intermediate signal (125), and for generating a comparison result signal (114) responsive to the comparison. A storage element (108) is used for storing the comparison result signal (114) for a predetermined delay period, thereby producing a clocked output signal (118). The adder-filter (101) is coupled to an analog signal (103) and to the clocked output signal (118) for subtracting the clocked output signal (118) from the analog signal (103) to produce a difference signal (120) that is filtered by a commutating filter (400) for generating the intermediate signal (125) responsive to the difference signal (120).

    Vehicle antiskid braking systems
    16.
    发明授权
    Vehicle antiskid braking systems 失效

    公开(公告)号：US3630577A

    公开(公告)日：1971-12-28

    申请号：US3630577D

    申请日：1970-11-25

    申请人： JOHN WALTER DAVIS

    发明人： DAVIS JOHN WALTER

    IPC分类号： B60T8/34 ,  B60T8/00 ,  B60T15/00

    CPC分类号： B60T8/342 ,  Y10T137/2544

    摘要： A valve having an annular inlet valve seat and an annular exhaust valve seat arranged concentrically and a flap valve diaphragm which is engageable at its outer peripheral portion with the inlet seat and at its central portion with the exhaust seat and which can flex to uncover either the inlet seat or the exhaust seat, a stem being secured to the flap valve diaphragm and to a second diaphragm and being arranged to balance the pressures acting on the flap valve diaphragm.