Pneumatic safety system for machine enclosures
CA 1073761 A · Owner: American Can Company · Inventors: Badavas, Charles A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, An enclosure for example, a safety enclosure around noisy or potentially dangerous machinery includes a door which, when opened, stops the operation of the machine to prevent injury to personnel who may examine or maintain the machine. A pneumatic safety system for the door includes in series, a, source of compressed air an air regulator valve, a series of, disconnectable air connectors and a transducer such as an air, pressure limit switch, which converts a decrease in air pressure into a control signal to stop the operation or the machine. One air connector member is mounted on the door and another on the door frame, so that they are automatically disconnected …
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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 18, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 18, 1997.
- 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.