Sandblast shutoff valve
CA 1268948 C · Owner: Truman'S, Inc. · Inventors: Zwicker, Fred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A shutoff valve for use on sandblasting equipment wherein the valve provides a fail safe positive closure of air and sand pressure stream at the nozzle where the operator is. The sand and air pressure stream provides a positive force on the valve assisting the closure and maintaining a tight seal against air and sand infiltration to the nozzle.
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 May 15, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 15, 2007.
- 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.