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273 records (took 0.029 seconds)

    91.
    发明专利
    未知

    公开(公告)号：DE1949733A1

    公开(公告)日：1971-04-08

    申请号：DE1949733

    申请日：1969-10-02

    IPC: H01J41/06 ,  H01J41/00

    93.
    发明专利
    未知

    公开(公告)号：DE1539160A1

    公开(公告)日：1970-03-05

    申请号：DE1539160

    申请日：1967-02-27

    Applicant: VARIAN ASSOCIATES

    Inventor： LAWRENCE JEPSEN ROBERT

    IPC: H01J41/20 ,  H01J41/00

    Abstract: 1,142,097. Ion lamps. VARIAN ASSOCIATES. 25 Jan., 1967 [28 Feb., 1966], No. 3784/67. Heading H1D. External magnetic arrangements 16 of an ion pump, comprising a plurality of appendage chambers 13 in communication with a main chamber 12 and each containing a pump element unit 31 consisting of an open-ended multi-cellular anode and a cathode structure, are such as to generate magnetic fields which are axial to the anode cells and in opposite directions in adjacent appendage chambers, The anode cells are circular or rectangular cylinders spot welded together and surrounded by a metal strap. A conductive bar 73 in contact with the strap of each unit is connected to a high voltage lead 72 provided with an insulator 71. The cathode structure comprises plates 37, 38 of reactive material e.g. titanium, or may comprise coatings on a support member. The cathode surfaces may be slotted or triode units may be employed to pump heavy inert gas. The pump port 19 is sufficiently large to admit assembled units 31 which are retained in the appendage chambers 13 by a plate 46 secured to the pump wall by a nut 47. Magnets 51 and polepieces 53, 54 are secured together by brackets 56 each having lipped extensions 60, 61, 62 and a tab 57 secured by a bolt 58 to the pump wall. Two or more appendage chambers may extend from two opposite walls or from all four walls of a rectangular main chamber, or the main chamber may be cylindrical with appendage chambers extending radially therefrom.

    Ionization Gauge Heads
    95.
    发明专利
    Ionization Gauge Heads 未知

    公开(公告)号：GB1178040A

    公开(公告)日：1970-01-14

    申请号：GB5840967

    申请日：1967-12-22

    Applicant: POLITECHNIKA WARSZAWSKA

    IPC: H01J41/00

    Abstract: 1,178,040. lonization manometers. P. WARSZAWSKA. 22 Des., 1967 [23 Dec., 1966], No. 58409/67. Heading H1D. An ionization manometer head comprises a cathode 1, two anode cages 2, 3, and an ion collector 4 located in a glass or metallic bulb 5 or built as an assembly for location in a vacuum system, the anodes being at different, potentials to prevent ions formed of gas evolved from the anodes from reaching the collector 4. In the arrangement shown, the inner cylindrical cage 2 is maintained at a lower potential than the outer cage 3. In an alternative embodiment (Fig. 2, not shown) the collector 4 is located outside a single cylindrical array, alternate members of which are connected to form the two anodes.

    99.
    发明专利
    未知

    公开(公告)号：DE1414569A1

    公开(公告)日：1969-03-20

    申请号：DE1414569

    申请日：1961-09-27

    Applicant: VARIAN ASSOCIATES

    Inventor： LAWRENCE JEPSEN ROBERT

    IPC: H01J41/20 ,  H01J41/00

    Abstract: 985,412. Ion pumps. VARIAN ASSOCIATES. Sept. 13, 1961 [Oct. 6, 1960], No. 32864/61. Heading H1D. A glow-discharge getter-ion vacuum pump has a cellular anode 23 disposed between two parallel cathodes 22, the cathodes being spaced from each other by a value between 1.15 inch and 1.35 inch and the cathode-anode spacing being within the range 0.2 inch to 0.35 inch. A method of selecting the electrode spacing comprises the steps of (a) determining the intrinsic pumping speed of a single cellular compartment as a function of the cathode-anode spacing or of the compartment height; (b) determining the actual pumping speed at the entrance of the cathode-anode region for said array of distributed cellular compartments as a function of the intrinsic speed of a single cellular compartment and therefore as a function of the cathode-anode spacing or compartment height; (c) plotting the actual pumping speed at the entrance to the cathode-anode region as a function of the cathode-anode spacing or compartment height; and (d) selecting the cathode-anode spacing or compartment height which produces the desirable usable pumping speed for the glow discharge apparatus. Alternatively, step (b) is replaced by the steps (b1 determining the actual pumping speed into the array of cellular compartments as a function of the cathodeanode spacing or compartment height, and (b2) determining the actual pumping speed at the entrance of the cathode-anode region for the array of cellular compartments as a function of the intrinsic pumping speed of a singular cellular compartment and the conductance into the array of cellular compartments and therefore as a function of the cathode-anode spacing or compartment height. A formula is given relating the pump dimensions to actual pumping speed from which the pump dimensions for optimum pumping conditions may be determined.

    100.
    发明专利
    未知

    公开(公告)号：DE1414572A1

    公开(公告)日：1968-10-03

    申请号：DE1414572

    申请日：1962-01-19

    Applicant: VARIAN ASSOCIATES

    Inventor： LAWRENCE JEPSEN ROBERT

    IPC: H01J41/20 ,  H01J41/00

    Abstract: 958,423. Ion-getter pumps. VARIAN ASSOCIATES. Jan. 26, 1962 [Jan. 27, 1961], No. 3031/62. Heading H1D. An ion-getter pump comprises an anode 12, a reactive cathode 18, and a magnetic field directed between the anode and cathode, which electrodes are enclosed by a vacuum compartment 7 adapted to be connected to apparatus to be evacuated, the pump being cooled by cooling means 25 substantially enveloped by said vacuum compartment. The cooling means 25 preferably comprises a hollow pipe through which cooling liquid can be circulated, or, alternatively, an elongated metal member for conducting heat out of the compartment, and is preferably arranged in intimate contact with at least one of the electrodes and positioned between them. The anode, e.g. of titanium, is preferably of the cellular type and the direction of the magnetic field is parallel to the axis of individual cells.

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