Method and apparatus for separating aggregate for a concrete topping slab
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 27, 2022
Grant Date -
Dec 2, 2021
app pub date -
May 27, 2020
filing date -
May 27, 2020
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A base supports an inclined screen having a uniform mesh selected to remove larger aggregate from a first cement mixture to form a second cement mixture that passes through the screen. A powered vibrator vibrates the screen to separate the concrete mixtures and larger aggregate. Springs and/or dampers in support legs isolate the vibrating screen from the base. A guide frame on the top surface of the screen guides the first concrete mixture along the screen and guide the separated aggregate out a bottom opening into an aggregate container. A support frame on the bottom surface of the screen stiffens the screen to help support the weight of the concrete. A concrete container, preferably wheeled, is below the screen to collect the second concrete mixture and move it to its use location.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2020 Application Filing Year
- B07B Class
- 160 Applications Filed
- 115 Patents Issued To-Date
- 71.88 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- B07B Class
- 80 % 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 | Jun 27, 2026 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jun 27, 2030 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 27, 2034 |
