Telescoping tower lock

Details Telescoping tower lock Telescoping tower lock

1990-11-08

1992-12-08

Scherbel, David A.

Static structures (e.g., buildings)

Mechanism operated relatively movable shaft assembly

Tilts relative to base

52117, B66C 2306

Patent

active

051686805

ABSTRACT:
An apparatus comprising a telescoping tower which has a first tubular tower member and a second tubular tower member which are relatively telescoped between an extended position and a retracted position. A first aperture is formed in the first tubular tower member. A second aperture is formed in the second tubular tower member, the second aperture being aligned with the first aperture when the tower is in the retracted position. A lock is inserted into the first and second apertures when the tower is in the retracted position, the lock limits relative displacement of the first and the second tubular tower members. The lock consists of a rod which is affixed to a vehicle. The tower is pivotally attached to the vehicle. When the tower is pivoted into a stored position, the lock will be inserted into the aligned apertures.

REFERENCES:
patent: 504987 (1893-09-01), Marum
patent: 2508835 (1950-05-01), Moon et al.
patent: 2800206 (1957-07-01), Thorpe
patent: 2905280 (1959-09-01), Weaver
patent: 3546831 (1970-12-01), Romo et al.
patent: 3738075 (1973-06-01), Nansel
patent: 4118907 (1978-10-01), Small et al.
patent: 4932176 (1990-06-01), Roberts et al.

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