Dc voltage bleeder for a variable speed air conditioner
CA 1290423 C · Owner: Sulfstede, Louis E. · Inventors: Sulfstede, Louis E.; Stamp, C. Lee, Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PATENT, Title, DC VOLTAGE BLEEDER FOR A VARIABLE SPEED AIR CONDITIONER Inventors, Louis E. Sulfstede, C. Lee Stamp Jr. Abstract, In a variable speed air conditioning system driven by an electronically commutated DC motor the large DC, capacitor associated with the compressor motor drive discharges to the normally AC powered compressor oil sump heater upon the loss of AC power to the system.
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 October 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2008.
- 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.