Caster wheel with constant force mechanism
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United States of America Patent
Stats
-
Mar 14, 2017
Grant Date -
Oct 1, 2015
app pub date -
May 1, 2014
filing date -
Apr 1, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A wheel assembly for a material handling vehicle includes a chassis, a first caster wheel mounted to the chassis, a second caster wheel mounted to the chassis, a torsion bar coupling the first caster wheel to the second caster wheel, and a constant force mechanism coupled to at least one of the first caster wheel, the second caster wheel and the torsion bar. The first and second caster wheels are displaceable in at least one dimension, and the constant force mechanism imparts a substantially constant force opposing a displacement in the at least one dimension.
First Claim
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International Classification(s)
- 2014 Application Filing Year
- B60G Class
- 528 Applications Filed
- 481 Patents Issued To-Date
- 91.10 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- B60G Class
- 18.34 % this patent is cited more than
- 8 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 | Sep 14, 2028 |
