Bottom door opening-closing mechanism, bottom door device and drop-bottom hopper car
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 27, 2015
Grant Date -
Aug 7, 2014
app pub date -
Aug 28, 2012
filing date -
Oct 28, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A bottom door opening-closing mechanism includes a first connecting rod, a second connecting rod, a swing rod, a bottom door opening-closing drive cylinder and a transmission shaft. The swing rod is hinged to the second connecting rod and the piston rod of the bottom door opening-closing drive cylinder. One end of the first connecting rod is hinged to the second connecting rod, and the transmission shaft is connected to the second connecting rod. The cylinder body of the bottom door opening-closing drive cylinder is fixedly connected with a first locking hook, and the swing rod is fixedly connected with a second locking hook which can be caught by the first locking hook. A bottom door device and a drop-bottom hopper car are further provided. In the present invention, the first locking hook and the second locking hook are caught with each other to achieve a secondary locking. Such an arrangement has some advantages such as a simple structure and low manufacture and maintenance costs. Further, a secondary locking may be achieved while closing the bottom door only by controlling the bottom door opening-closing drive cylinder, so that the complexity of the control system is reduced.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2012 Application Filing Year
- B61D Class
- 103 Applications Filed
- 84 Patents Issued To-Date
- 81.56 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- B61D Class
- 21.11 % this patent is cited more than
- 10 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 27, 2026 |
