Deployable/retractable telescoping mast assembly and method

Details Deployable/retractable telescoping mast assembly and method Deployable/retractable telescoping mast assembly and method

1992-04-01

1994-05-31

Friedman, Carl D.

Static structures (e.g., buildings)

Mechanism operated relatively movable shaft assembly

With spring-actuated return

52111, 403109, 343874, 343901, B66C 2306

Patent

active

053157958

ABSTRACT:
A deployable and retractable, telescoping style mast assembly and method employs a plurality of tubular sections of differing diameters. The tubular sections are nested one-in-another and are slidable with respect to each other, in a telescoping manner, to provide a deployable/retractable telescoping mast assembly. Retractable pins are provided to retractably extend from a collar coupled to at least one of the tube sections. In their extended state, the retractable pins are adapted to extend through apertures provided in an adjacent tube section. The retractable pins are provided with a head at one end thereof. The head of each pin is adapted to be engaged by a guide coupled to a third tube section upon the third tube section being in a collapsed state. Upon engagement with the pin head, the guide operates to pull the pin into a retracted state so as to retract the pin out of the pin receiving aperture.

REFERENCES:
patent: 2888111 (1959-05-01), Evans
patent: 3474833 (1969-10-01), Garrette, Jr. et al.
patent: 4047821 (1977-09-01), Hoke et al.
patent: 4079978 (1978-03-01), McMullin
patent: 4385849 (1983-05-01), Crain
Astro Aerospace Corporation Telescopic Design presented at Lockheed Missiles & Space Company by Rohweller et al.
ERM, The Deployable Mast for Columbus by Reiger, publication date unknown.
Astro Telescopic Boom sheet of Astro Aerospace's capabilities brochure 1991.

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