Longitudinal sliding gate for hopper car
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 10, 2021
Grant Date -
Jul 4, 2019
app pub date -
Dec 11, 2018
filing date -
Dec 15, 2017
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
According to some embodiments, a railcar comprises an underframe and at least one hopper. The hopper is configured to transport a lading material. A longitudinal sliding gate assembly is coupled to the hopper and comprises: a pair of side walls coupled to a pair of end walls forming a discharge opening; a pair of tracks, one coupled to each end wall; a sliding gate slidably coupled to the pair of tracks; and a threaded drive screw coupled to the sliding gate and to the pair of side walls. Rotation of the threaded drive screw in a first direction moves the sliding gate along the tracks to an open position that permits the lading material to discharge, and rotation of the threaded drive screw in an opposite direction moves the sliding gate along the tracks to a closed position that restricts the lading material from discharging.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2018 Application Filing Year
- B61D Class
- 172 Applications Filed
- 123 Patents Issued To-Date
- 71.52 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- B61D Class
- 0 % this patent is cited more than
- 4 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 | Feb 10, 2025 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Feb 10, 2029 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 10, 2033 |
