Carburetor
CA 1102192 A · Owner: General Motors Corporation · Inventors: Giampa, Rolland D.; Brokaw, Donald D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A carburetor main fuel passage receives fuel both through a primary metering orifice and through a supplementary metering orifice controlled by a pulse width modulated duty cycle operated metering valve. A rich adjusting needle limits fuel flow through the supplementary metering orifice and is set to establish the high fuel flow desired through the passage at one particular value of the duty cycle, and a lean adjusting needle limits fuel flow through the primary metering orifice and is set to establish the low fuel flow desired through the passage at another particular value of the duty cycle; with this carburetor a desired fuel, flow band width is achieved over a …
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 2, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 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.