Low emission multiple sealing system for floating roof tanks
CA 1051164 A · Owner: Uss Engineers And Consultants · Inventors: Nuttall, Wayne E.; Page, William H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
SPECIFICATION, WAYNE E. NUTTALL and, WILLIAM H. PAGE A LOW EMISSION MULTIPLE SEALING, SYSTEM FOR FLOATING ROOF TANKS ABSTRACT OF THE INVENTION, A low emission multiple sealing system for a floating roof liquid hydrocarbon storage tank is provided. The sealing system utilizes a double sealing arrangement in addition to in a, preferred embodiment, a conventional weather seal. The double sealing arrangement includes two functionally independent generally toroidal shaped sealing elements positioned one above the other and filling the annular gap between the floating roof and the inner surface of the storage tank. In order to provide for increased sealing efficiency and to eliminate the …
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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 March 27, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 27, 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.