Unit brake
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 25, 2017
Grant Date -
Aug 21, 2014
app pub date -
Jul 2, 2012
filing date -
Jul 26, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Disclosed is unit brake, which is equipped with a cylinder apparatus in which a clutch mechanism that switches between transmitting or cutting off a biasing force of a spring brake part is disposed, is capable of preventing a braking force due to the spring brake part from unintentionally decreasing due to a meshing section of the clutch mechanism disengaging, and is of a size that can replace an existing unit brake, and maintains the performance of bearings in the clutch mechanism even with long-term use. The clutch mechanism of the unit brake includes: a nut member that rotatably screws on a spindle that is positioned in an area that communicates with the atmosphere, and is movably supported in a direction opposite to braking; a clutch that is disposed in a direction opposite to braking with respect to the nut member, and faces the nut member in the vicinity of the spindle; a clutch box that is formed in a cylinder shape, and houses the nut member and clutch on the inside; and bearings that rotatably support the nut member on the inside of the clutch box.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2012 Application Filing Year
- B61H Class
- 44 Applications Filed
- 32 Patents Issued To-Date
- 72.73 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- B61H 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 | Jan 25, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 25, 2029 |
