Method for retreading a heavy duty tire with a polyurethane tread
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 10, 2013
Grant Date -
May 9, 2013
app pub date -
May 2, 2012
filing date -
Aug 20, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A process and method for retreading a heavy duty tire with a polyurethane tread where, after a tire carcass is inspected, cleaned and the worn tire tread is removed, the tire carcass receives a tube fitted therein and is installed in a mold cavity, between top and bottom mold rings. The mold rings each include spaced segments that inter-digitate and will form equal spaced tread voids in a finished recapped tire. The bottom mold ring inner edge top includes a continuous sealing lug, and the top ring is open to pass a flow of polyurethane materials, that is received off of a lower edge of a cone shaped spreader positioned onto the tire carcass top side wall and slides, as a sheet, into the mold, filling the mold cavity from bottom to top, forcing air from the mold ahead of the fill and forming the recapped tire tread.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2012 Application Filing Year
- B29D Class
- 823 Applications Filed
- 658 Patents Issued To-Date
- 79.96 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- B29D Class
- 0 % this patent is cited more than
- 12 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 10, 2025 |
