Device for automatic circulation in sewage water pump stations
CA 1184473 A · Owner: Itt Industries, Inc. · Inventors: Szendroi, Balint; Carlsson, Valdemar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention concerns a device for automatic circulation in waste water pump stations. The pump unit is provided with a valve directly at the pump housing to open a connection between the pump and the pump station. By operation of the valve circulation of, the waste in the pump station is obtained. The valve is arranged at the upper side of the pump housing and has an outlet which is oriented in a direction within 45° to either side of the direction directly opposite to the direction of flow of the waste at the location where the valve is connected. Thus, the risk of clogging of the valve is minimized and flexible objects which may be entrained in the medium are prevented from becoming …
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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 26, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 26, 2002.
- 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.