Submersible pump for use in toxic and hazardous waste sampling
CA 1164268 A · Owner: Hilty, Robert D. · Inventors: Hilty, Robert D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Invention, A submersible small diameter elongate progressive cavity pump assembly for use in the testing of wells so as to detect and monitor the existence of toxic and hazardous waste at subsurface levels. The submersible pump assembly comprises an elongate narrow diameter hollow stainless steel casing member provided with water intake openings through the central portion of the wall thereof and which is adapted for lowering through the pipe of an existing well. A progressive cavity pump is provided in the upper portion of the casing member which comprises a stainless steel rotor member and a rubber or Teflon stator member. The lower intake portion of the progressive cavity …
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 March 27, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 27, 2001.
- 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.