Zero clearance variable width paving machine
CA 2347516 A1 · Owner: Federowicz, Steven D. · Inventors: Federowicz, Steven D.; Leone, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention teaches a slip form paving machine which can be used for both zero clearance variable width and variable width conventional paving using the same paving pan. The main frame of the machine is designed to hydraulically extend and retract from varying desired widths. The paving assembly attached, to the main tractor assembly frame is adjustable as, wide as the width of the main frame of the machine or further past the exterior limits for additional clearance, if required. The paving pan which is part, of the pan assembly, can also be extended to conform to these various widths. In a "zero clearance" paving mode, the same pan is located behind the main tractor frame, whereas in …
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
- Filed May 10, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 10, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 2023.
- 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.