Extensible mast support system

Details Extensible mast support system Extensible mast support system

1987-11-30

1989-07-25

Murtagh, John E.

Static structures (e.g., buildings)

Striplike unit, reversibly flexible and rigid

52111, E04H 1218, E04H 1220

Patent

active

048501611

ABSTRACT:
An extensible mast support system is depicted which utilizes a plurality of anchor points which are disposed radially distant from the base of the mast. A support bracket mounted to the mast serves to mount multiple metering sprockets and a single continuous length of cable is threaded between each anchor point and the support bracket. Strain measurement devices on each span of the cable are utilized to control the length of cable payed out during extension or retraction of the mast. A beaded cable which engages the metering sprockets is utilized to restrict variations in length between spans whereby increased strain in an individual span will not vary the length of the other spans and the mast will remain vertical.

REFERENCES:
patent: 1656215 (1928-01-01), McDonald et al.
patent: 2130993 (1938-09-01), Dubilier
patent: 2923382 (1960-02-01), Heldstab
patent: 4625475 (1986-12-01), McGinnis

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