Modular precast concrete steps
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 14, 2017
Issued Date -
N/A
app pub date -
Dec 21, 2016
filing date -
Feb 16, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A precast concrete step unit formed of left and right sidewalls, risers, and treads, wherein left and right sidewalls are assembled from a plurality of pre-cast sidewall panel modules, including at least one stepped panel module and at least one rectangular panel module. The panel modules are joined edge-to-edge at seams, with cement and/or with hardware. Pre-cast concrete tread modules extend at least between the left and right sidewalls and are mounted onto respective stepped edge surfaces of the right and left sidewalls. Pre-cast concrete riser modules also extending at least between the right and left sidewalls and mounted onto tread modules. These each extend vertically to successive stepped edge surfaces. Reinforcing cross brace members are fastened to the inward surfaces of the left and right sidewalls and extend at crossed diagonals between them. The precast modules each weight about 200 pounds or less and can be carried by two workmen. One-piece concrete footing pieces can be used to support the lower edges of the sidewall panel modules.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2016 Application Filing Year
- E04F Class
- 707 Applications Filed
- 521 Patents Issued To-Date
- 73.70 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- E04F Class
- 0 % this patent is cited more than
- 8 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 | May 14, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 14, 2029 |
