Hybrid leaf spring with reinforced bond lines
CA 2479592 A1 · Owner: Pilpel, Edward · Inventors: Gordon, D. Michael; Pilpel, Edward; Meatto, Frank
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hybrid leaf spring includes an elongated primary leaf (12) having a compression surface (16), an opposite tension surface (14) and a first , modulus of elasticity. At least one composite material layer (20,22) is provided having a second modulus of elasticity different from the first modulus of elasticity. An adhesive layer (42) is interposed between and bonds the at least one composite material layer (20,22) to and in substantially parallel relationship with a respective one of the tension (14) and compression (16) surfaces of the elongated primary leaf (12). A reinformcing layer (44) of natural, compression surfaces of the elongated primary leaf. A reinforcing layer of natural, …
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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 March 18, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 18, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 18, 2025.
- 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.