Composite rung for a ladder and method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 1, 2020
Grant Date -
Feb 4, 2016
app pub date -
Jul 29, 2014
filing date -
Jul 29, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A ladder having a first fiberglass rail. The ladder having a second fiberglass rail. The ladder having a one-piece composite rung which is hollow and made of carbon fiber or glass. The rung has a middle and a first end and a second end. The ladder having rivets that extend through the first end and the second end of the rung to attach the rung to the first rail and the second rail. No portion of the rung penetrates any portion of the first or second rails. A method for producing a ladder. A method for forming a one-piece composite rung for a ladder. A method for using a ladder.
First Claim
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International Classification(s)
- 2014 Application Filing Year
- B21J Class
- 171 Applications Filed
- 152 Patents Issued To-Date
- 88.89 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 4 Citation Count
- B21J Class
- 66.67 % this patent is cited more than
- 5 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Mar 1, 2028 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Mar 1, 2032 |
