Supports – Stand – Plural leg
Patent
1977-04-13
1978-06-27
Parsons, Jr., Marion
Supports
Stand
Plural leg
160 24, F16M 1138, G03B 2156
Patent
active
040970132
ABSTRACT:
A tripod stand, providing a portable support for a projection screen, having a handle which is slidably movable on the standard of the stand and to which the case, which houses the viewing screen and its spring loaded roller, is swivelly connected. The handle is equipped with two latches both of which must be released for movement of the handle on the standard. The index finger of the hand gripping the handle, is positioned to release one of the latches and the other latch is released by the thumb of the same hand, leaving the other hand free for other functions, such as, manipulating the screen case. A bracket to which the legs of the stand are pivotally connected is slidably movable on the standard and cooperates with leg braces which are pivotally connected to the legs and standard for moving the legs between extended and folded positions. Detent members carried by the legs engage under the flared lower end of a collar which is secured around the standard for latching the legs in their folded positions.
REFERENCES:
patent: 2361119 (1944-10-01), Owens
patent: 2549584 (1951-04-01), Eller
patent: 2621802 (1952-12-01), Stover
patent: 2812020 (1957-11-01), Wachtendorff
patent: 2838784 (1958-06-01), Cooley et al.
patent: 2864577 (1958-12-01), DuMais
patent: 2905420 (1959-09-01), Petrick
patent: 3022816 (1962-02-01), Petrick et al.
patent: 3868078 (1975-02-01), Zinn
Draper Shade and Screen Co.
Parsons, Jr. Marion
Randolph John N.
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