Telescoping ladder
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
Mar 15, 2022
Grant Date -
Sep 14, 2017
app pub date -
Mar 14, 2017
filing date -
Mar 14, 2017
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A telescoping ladder includes first and second telescoping ladder racks each having a top portion and including an outer ladder rack having first and second outer legs having interior surfaces that are sliding surfaces; and an inner ladder rack having a first and second inner legs having a sliding surface that slidably engages the sliding surface of the first outer leg along the length thereof, and the second inner leg having a sliding surface that slidably engages the sliding surface of the second outer leg along the length thereof. The top portions are pivotally connected to form a structure that articulates to open and close the ladder. The outer and inner ladder racks are configured as elongated hollow tubes that have a cross section of a closed tube having a protuberance extending therefrom. The outer legs have lateral support legs having protruding ribs to form a stabilizing support structure.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2017 Application Filing Year
- E06C Class
- 164 Applications Filed
- 113 Patents Issued To-Date
- 68.91 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 14 Citation Count
- E06C Class
- 88.46 % this patent is cited more than
- 3 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Sep 15, 2025 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Sep 15, 2029 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 15, 2033 |