Electricity: conductors and insulators – Conduits – cables or conductors – Single duct conduits
Patent
1981-12-21
1983-08-02
Marcus, Stephen
Electricity: conductors and insulators
Conduits, cables or conductors
Single duct conduits
138110, 138120, 174111, H02G 304, H01B 78, F16L 1100
Patent
active
043967973
ABSTRACT:
A flexible cable suitably used as a jacket or cover for an inner conduit member such as a gas conduit or a liquid conduit, a signal transmission line, or an energy transmission line, or the like, which can provide safe use of the conduit inserted thereinto by limiting the bending radius thereof. The cable includes a plurality of axially symmetrical pipe members having large and small diameter ends which are assembled with the small ends of each pipe member fitted into the large end of an adjacent pipe member and loosely fitting flexible ring members fitted over the small ends of the pipe members.
REFERENCES:
patent: 276472 (1883-04-01), Rittenhouse et al.
patent: 428023 (1890-05-01), Schoff
patent: 536419 (1895-03-01), Cochrane
patent: 1276117 (1918-08-01), Riebe
patent: 2173539 (1939-09-01), Peters et al.
patent: 3189372 (1965-06-01), Johnson
patent: 3329967 (1967-07-01), Martinez et al.
patent: 3910277 (1975-10-01), Zimmer
Imagawa Kyoshiro
Sakuragi Shiro
Horiba Ltd.
Marcus Stephen
Thronson Mark John
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