Internal telescopic tube locking device

Details Internal telescopic tube locking device Internal telescopic tube locking device

1999-03-08

2000-04-18

King, Anita M.

Supports

Stand

Understructure

248412, F16M 1126

Patent

active

060505311

ABSTRACT:
A locking device for multiple section telescope tubes that locks the telescoping tubes in any position of extension and releases the leg sections sequentially from the bottom up by depressing a push rod. The push rod releases a pin or ball that clamps the internal surface of an outer leg to the surface of an inner leg, thereby preventing an inner leg from sliding within the outer leg. The device can be used on any telescoping device. For example, the locking device may be used with tripods for cameras, painter's easels, telescopes, and other optical instruments, as a single multi-section stand for music, microphones, light stands, canes, walking sticks, flagpoles, umbrellas, handles, tent poles, or for devices such as radio antennae or pointing devices.

REFERENCES:
patent: 1447519 (1923-03-01), Schade
patent: 4761092 (1988-08-01), Nakatani
patent: 5503357 (1996-04-01), Johnson et al.
patent: 5522300 (1996-06-01), Cheatwood
patent: 5570968 (1996-11-01), Sassmannshausen et al.
patent: 5740998 (1998-04-01), Lindsay et al.

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