Interconnecting rotary and reciprocating motion
CA 2074368 C · Owner: Feilden, Geoffrey Bertram Robert · Inventors: Downton, Christopher Mark; Feilden, Geoffrey Bertram Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Reciprocating elements such as pistons ( 17) in a pair of opposed cylinders are connected to a crankpin (16) of a crankshaft by respective connecting links (18) having flat guide surfaces (24) engaging bearing pads (31) on a drive block (28) rotatably mounted on a crankpin (16). The two connecting links (18) are rigidly interconnected and reinforced by four U-shaped connecting plates (19) which are secured to the connecting links by screws (35) at spaced intervals and have longitudinal ribs engaged in grooves (34) of the connecting links (18). The connecting plates (19) also form lateral guides (36) for the drive block. In variants connecting plates are formed integrally with one or more …
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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
- Filed February 21, 1991 and granted May 28, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 21, 2013.
- 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.