Apparatus for applying a metered quantity of adhesive to closures
    181.
    发明授权
    Apparatus for applying a metered quantity of adhesive to closures 失效
    适用于封闭数量的胶粘剂的装置

    公开(公告)号:US3601291A

    公开(公告)日:1971-08-24

    申请号:US3601291D

    申请日:1969-07-31

    Inventor: TESSMER EDWARD A

    CPC classification number: F16B39/34 B05C7/00 B23P6/04

    Abstract: A rotary member having a discharge orifice for dispensing an annular bead of puttylike material upon rotation; the rotary member is mounted for reciprocal movement into and out of a retainer thereby closing and opening the orifice. A material receiving recess in the rotary member is connected to the orifice by a transfer passage. The recess is connected to a supply of material which fills it when the orifice is positioned inside the retainer. It is disconnected from the supply when the orifice is outside the retainer for dispensing at which time any material contained in the recess flows through the transfer passage and is dispensed at the orifice upon rotation of the rotary member.

    Apparatus for coating hollow objects with powder
    185.
    发明授权
    Apparatus for coating hollow objects with powder 失效
    用于涂抹粉末的中空对象的装置

    公开(公告)号:US3422795A

    公开(公告)日:1969-01-21

    申请号:US3422795D

    申请日:1965-12-13

    Inventor: SMITH MILLARD F

    CPC classification number: B05B13/0627 B05B7/1486 B05B15/0412 Y02P70/36

    Abstract: 1,111,722. Mixing fluent streams, coating apparatus. M. F. SMITH. 28 Oct., 1964, No. 44004/64. Headings B1C and B2L. [Also in Division D1] Apparatus for mixing a powder and a gas comprises a tube 70 having a plurality of flow-straightening means such as screens 72 to produce a laminar flow, and powder and compressed air inlets 48, 58 mutually arranged at an acute angle. A constriction 60 in the air inlet produces in the chamber 56 abrupt reduction in the velocity of the gas and improved mixing. The screens have apertures in registration and about ten times the particle average diameter. The tube outlet end may be unobstructed or have a shaped orifice (see Fig. 2, not shown) or a concentric conical body which produces a divergent flow (see Figs. 3, 8, 10, 11, 12 and 13, not shown). The invention may be embodied as a coating apparatus e.g. to produce a coating 78 of a thermoplastic material on a body 72 which may be rotated or given helical motion and internally heated, Fig. 7. A vacuum hood 82 is positioned to collect and recycle undeposited material and an intermittent air blast 77 may divert the stream so that the body 72 can be exchanged without extending the coated area. Other embodiments are a self propelled device incorporating an air compressor and infra-red heating lamps for coating the interior of a pipe (see Figs. 8-11, not shown); a telescoping reciprocating device with a telescopic vacuum hood for coating the internal walls and bottom of a container, see Figs. 12 and 13, not shown) and a device for coating wire (see Fig. 14, not shown and Division D1-2) in which the heat may be provided by a laser beam or the residual heat of extrusion. The thermoplastic material may be PVC or polyethylene of submicron size up to about 250 microns.

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