Diving bell handling system and method
CA 1054978 A · Owner: J. Ray Mcdermott And Co. · Inventors: Faust, Richard C.; Reiher, Max A. W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A handling system for lowering and lifting a diving bell between the ocean surface and the deck of a vessel or a marine platform includes a horizontally extendible and retractable frame which mounts sheaves used or directing the hoist cable and umbilical cable into communication with the bell. The frame comprises a pair of elongate beams driven by means of a pair of hydraulic motors having pinions which engage racks built integral with the beams. The frame includes a member having a downwardly opening frusto-conical inner surface which is adapted to mate with a similar frustoconical superstructure on the diving bell. A plurality of locking fingers are operatively arranged on the upper …
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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 May 22, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
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.