Suspended-cable apparatus for measuring a preselected condition of material in a vessel
CA 1291652 C · Owner: Berwind Corporation · Inventors: Mcgookin, Hugh R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for indicating a preselected condition of material in a vessel which includes a laid wire cable vertically suspended within the vessel so as to contact and be surrounded by material contained therein. The laid wire cable is suspended by a roller-type thrust bearing which permits free rotation of the cable and thus prevents torsional sheer stresses on the suspended cable end due to tension in the cable and consequent unraveling and reraveling of the cable lays. In a preferred embodiment of the invention wherein the upper end of the cable is selectively slackened and material level is determined as a function of weight of the slackened cable end unsupported by material, a spherical …
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 November 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 5, 2008.
- 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.