Method of advancing a plurality of longitudinally arranged movable constructional units forwardly successively in a self-running manner and apparatus for performing same
CA 1049274 A · Owner: Uemura, Koichi · Inventors: Uemura, Shin; Uemura, Setsuko; Uemura, Makoto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of advancing a plurality of longitudinally arranged movable constructional units forwardly successively in a self-running manner, wherein a plurality of prefabricated constructional units for construction of an underground structure of a form adapted for a special purpose such as tunnel excavation heavy load transportation, underwater tunnel installation or muddy water dredging excavation are arranged along a common longitudinal line adjacent to each other and are provided with a forward advancement impelling mechanism, said mechanism comprising propulsion means positioned between the successive constructional units a linking member extending over the entire length of the combined …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted February 27, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 27, 1996.
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Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.