Pipe joints or couplings – With assembly means or feature – Handle or handwheel for rotary engagement
Patent
1995-06-29
1996-12-24
Arola, Dave W.
Pipe joints or couplings
With assembly means or feature
Handle or handwheel for rotary engagement
285158, 285205, 285312, F16L 3500
Patent
active
055867898
ABSTRACT:
A quick connector assembly for temporarily connecting large diameter vacuum hose to heating, ventilating and air conditioning ductwork for the purpose of, but not limited to, establishing a vacuum within ductwork to aid in cleaning unwanted debris and materials from the ductwork. The quick connector assembly requires that a hole be cut into the ductwork. A large diameter vacuum hose is secured to a hose attachment tube on the present quick connector assembly. The quick connector assembly includes a flat circular flange which engages the duct wall when the quick connector assembly is held up to the hole. At least two pivoting support ears are pivoted outward until they extend beyond the edges of the cut hole. As they are pivoted outward, the pivoting support ears engage the inner side of the duct wall so that a clamping effect is created between the pivoting support ears and the flat circular flange, thus securing the quick connector assembly to the ductwork.
REFERENCES:
patent: 998352 (1911-07-01), Kublin
patent: 1657013 (1928-01-01), Kettle
patent: 2495754 (1950-01-01), Nance
patent: 4504085 (1985-03-01), Sachleben
patent: 4844859 (1989-07-01), Coussau
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