Retracting rail clamp
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 23, 2022
Grant Date -
Jun 24, 2021
app pub date -
Aug 3, 2020
filing date -
Feb 11, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A retracting rail clamp for braking or anchoring a rail-mounted machine such as a crane by clamping opposite sides of a longitudinal rail member, the retracting rail clamp comprising: a load transfer frame rigidly secured to the crane, such as by bolting; and a clamp mechanism suspended within the load transfer frame by at least one lateral pair of pivotally mounted lift levers, and operable through a first and second stage of motion between a raised, brake release position, in which the entirety of the rail clamp is disposed substantially vertically clear of the rail, and a lowered, brake set position wherein at least one opposed facing pair of main levers of the clamp mechanism engage the side surfaces of the rail.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2020 Application Filing Year
- F16M Class
- 1066 Applications Filed
- 696 Patents Issued To-Date
- 65.30 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F16M Class
- 0 % 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 | Feb 23, 2026 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Feb 23, 2030 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 23, 2034 |
