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    Improved Air Seal for Paint Guns
    3.
    发明专利
    Improved Air Seal for Paint Guns 未知

    公开(公告)号：CA2117269A1

    公开(公告)日：1993-05-27

    申请号：CA2117269

    申请日：1992-11-10

    Applicant: WAGNER SPRAY TECH CORP

    Inventor： STEINBERG TIMOTHY D ,  GUNDERSON RICHARD W

    IPC: B05B7/02 ,  B05B1/00 ,  B05B7/12

    Abstract: An improved shaft sealing ring for a portable paint gun of the type having an axially movable control shaft for controlling a supply of pressurized air to atomize a stream of paint. The sealing ring has a truncated frustro-conical surface tapering from a radially extending retaining surface toward a front end of the sealing ring and a radially extending flange at a back end of the sealing ring with an outer peripheral groove in an outer surface of the ring body between the flange and the retaining surface. The ring is installed by urging the front face through an opening having a diameter smaller than that of the face, the opening defined by a wall extending radially inwardly as a part of the gun housing. The flange is resiliently deflected to form a seal when the ring is installed. A central bore of the seal is sized to receive the shaft with a seal between the shaft and the ring provided by a ridge extending radially into the bore of the ring at the back end thereof. The ridge is urged against the shaft by deflection of the flange, thus improving the seal between the ring and the shaft.

    SHAFT SEAL FOR PORTABLE PAINT GUN
    6.
    发明专利
    SHAFT SEAL FOR PORTABLE PAINT GUN 未知

    公开(公告)号：CA2165693C

    公开(公告)日：1998-05-19

    申请号：CA2165693

    申请日：1991-07-15

    Applicant: WAGNER SPRAY TECH CORP

    Inventor： STEINBERG TIMOTHY D ,  SVENDSEN JOHN M ,  GUNDERSON RICHARD W

    IPC: B05B7/02 ,  B05B1/32 ,  B05B7/04 ,  B05B7/12

    Abstract: An improved control shaft seal and air valve for a portable paint gun with the seal having a radial clearance with the shaft except at a shaft sealing surface of limited axial length. The shaft seal has a conical surface radially outward of the shaft sealing surface to provide a sealing surface and also to provide transfer of axial forces at that surface to a radial direction to provide a force to urge the shaft sealing surface against the control shaft. A second conical surface of the seal provides for retention of the seal on an air valve spring when the paint gun is disassembled. An improved air valve for portable paint guns is also disclosed having a rigid axial hub and radial support carrying a relatively flexible rim portion adapted to engage a tapered seating surface in the gun.

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