Freezeproof valve assembly
CA 1207631 A · Owner: Physical Systems, Inc. · Inventors: Hutter, Charles G. Iii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved freezeproof valve assembly is provided for a water hydrant, such as an outdoor drinking fountain or the like. The valve assembly comprises a sump housing for installation below the ground frost line and for connection between a water supply pipe and a standpipe, the latter being coupled in turn to a fountain bubbler head or the like. A control valve within the sump housing is opened pneumatically upon depression of an actuator button on the fountain to permit water flow from the supply pipe through a main jet pump which draws an induced water flow from within the sump housing through an induction port thereby providing a combined water flow through the standpipe to the bubbler …
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 July 15, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 15, 2003.
- 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.