Air conditioning control and method of operation
CA 1104237 A · Owner: Carrier Corporation · Inventors: Bryans, David F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A control for a plurality of air conditioning units installed in separate rooms of a multi-room building with each air conditioning, unit having an on-off switch to selectively connect the air conditioning unit to a source of electrical power. The control includes a switch for simultaneously interrupting the electrical power supplied to each air conditioning unit to place each unit in an off state. Once the supply of electrical power to each unit is renewed each unit is prevented, from restarting until the unit's on-off switch has been manually moved from its on position to its off position. -1-
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 June 30, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 1998.
- 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.