Survey apparatus

Details Survey apparatus Survey apparatus

1975-10-07

1978-04-18

Purser, Ernest R.

Static structures (e.g., buildings)

Including component designed to receive a disparate article...

On shaft or tower

52119, 52120, E04H 1234

Patent

active

040843599

ABSTRACT:
A survey system employs a ground-based extendible mast so that survey instruments, such as cameras, mounted at the top of the mast can attain heights comparable to those of low-level aerial photography. The mast is mounted on a base structure that houses a self-contained power plant, including an internal combustion engine, electric batteries and means for compressing fluid and storing it in a pressurized state. The mast may be telescopic and also tiltable, and the instrument pack at the top may be controlled from ground level to move to selected attitudes, e.g. to pan and tilt.
Simpler versions are described, omitting the power plant and adjustable entirely manually, and one system is carried by an operator rather than being ground based.

REFERENCES:
patent: 220031 (1879-09-01), Starr
patent: 1762740 (1930-06-01), Rains
patent: 1901726 (1933-03-01), Bonnet
patent: 2474250 (1949-06-01), Howard
patent: 2581351 (1952-01-01), Black
patent: 2781108 (1957-02-01), Selberg
patent: 2812833 (1957-11-01), O'Nan
patent: 2949280 (1960-08-01), Curtis
patent: 2998106 (1961-08-01), Aust
patent: 3109522 (1963-11-01), Womack
patent: 3185265 (1965-05-01), White
patent: 3605359 (1971-09-01), Bader

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