Hose connection for vacuum cleaner attachments

An attachment accommodating fitting for a vacuum cleaner air hose including an air hose extremity formed with an internal cylindrical surface and with an external cylindrical surface;

• said internal cylindrical surface adapted to accommodate therein a small diameter butt on an attachment, and said external cylindrical surface adapted to accommodate thereon a large diameter butt on an attachment;
• a latch lever pivotally supported on said air hose;
• first and second latch finger projections on one limb of said latch lever, each extending tangentially with respect to the pivotal support for said latch lever;
• said air hose extremity being formed with a latch finger accommodating aperture;
• resilient means biasing said latch lever toward a position in which one of said latch finger projections traverses said air hose extremity through said latch finger accommodating aperture;
• each small diameter attachment butt being formed with a latch aperture of size and shape corresponding to said first latch finger projection, and each large diameter attachment butt being formed with a latch aperture of size and shape corresponding to said second latch finger projection;
• interengaging cam means formed on each attachment butt and the latch finger projection with which said attachment butt latch aperture corresponds for retracting said latch finger projection in opposition to the bias of said resilient means during insertion of said attachment butt in place with respect to said hose extremity until alignment of said latch finger projection with said latch aperture in said attachment butt is attained;
• and operator influenced means for at-will retracting said latch finger projection to release an attachment for removal from said hose extremity.