Ultra lightweight segmented ladder/bridge system
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United States of America Patent
Stats
-
Aug 12, 2014
Grant Date -
Sep 1, 2011
app pub date -
May 10, 2011
filing date -
Dec 30, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A dual-use ladder and bridge modular system preferably includes tubes, gussets, flanges, and/or joints. In a preferred embodiment, the tubes, gussets, flanges, and/or joints are made of carbon fiber. A method connects and disconnects modular carbon fiber ladder segments. Another method creates a lightweight carbon-fiber beam with exceptionally high stiffness and strength using a combination of carbon-fiber braid material, uni-directional cloth, and pultruded carbon-fiber strips. A carbon fiber ladder segment and tube connectors are also disclosed.
First Claim
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International Classification(s)
- 2011 Application Filing Year
- E06C Class
- 64 Applications Filed
- 52 Patents Issued To-Date
- 81.25 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- E06C Class
- 15.79 % this patent is cited more than
- 11 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 | Feb 12, 2026 |
