Articulated, four-way bendable tube structure

Details Articulated, four-way bendable tube structure Articulated, four-way bendable tube structure

1976-04-21

1978-08-22

Bell, Jr., Houston S.

Pipes and tubular conduits

Flexible

Joined sections

128 4, F16L 1118

Patent

active

041082117

ABSTRACT:
An articulated tube structure to be arranged next to the head of a fiberoptic endoscope to permit same to be tilted in either of four different directions by manipulation of pull wires. The tube structure comprises a series of relatively short elementary tubes each having two pairs of lugs on its opposite ends which are angularly displaced 90.degree. from each other. These elementary tubes are jointed in spaced end-to-end relationship by wire support members passing through their overlapped lugs. The wire support members have holes in their ends located inside the tube structure, and the pull wires extend through the holes with clearance. A recessed inner tube can be nested in each elementary tube to eliminate unevenness of the internal surfaces of the tube structure.

REFERENCES:
patent: 3060972 (1962-10-01), Sheldon
patent: 3190286 (1965-06-01), Stokes
patent: 3266059 (1966-08-01), Stelle
patent: 3270641 (1966-09-01), Gosselin
patent: 3583393 (1971-06-01), Takahashi
patent: 3799151 (1974-03-01), Fukaumi et al.

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