Device for seismic exploration
CA 1294031 C · Owner: Norsk Hydro A.S. · Inventors: Rygg, Eivind; RõD, KARSTEIN
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for seismic exploration in the form of a towed streamer. The streamer is easily managed is very flex-, ible and has a low weight so that it may be towed with moderate tractive forces. It consists of a cable with an inner core (11), one or more layers(12)of insulated conductor pairs and an outer low-friction protective coating(13), and is characterised by the employment in both the core as well as in the outer low-friction protective layer of an acoustically almost inert material of low specific gravity. The seismic signals are obtained by means of series connected gimbal-mounted geophones.
Read the whole patent
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 January 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 7, 2009.
- 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.