Wheelchair with lever drivetrain
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 30, 2014
Grant Date -
Mar 14, 2013
app pub date -
Jun 10, 2011
filing date -
Oct 28, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A manually powered wheelchair includes a first lever associated with a first rear wheel and demountably coupled to a first drivetrain, the first lever having a first brake thereon. The wheelchair also includes a second lever associated with a second rear wheel and demountably coupled to a second drivetrain, the second lever having a second brake thereon. Each drivetrain includes a chainring, a chain, and a freewheel, and each drivetrain has a fixed gear ratio. The freewheel of each drivetrain is actuated by manual pivoting of the lever associated therewith. In use, the wheelchair achieves changes in mechanical advantage when a user shifts the user's hands up and down the first and second levers.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2011 Application Filing Year
- B62M Class
- 227 Applications Filed
- 163 Patents Issued To-Date
- 71.81 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 5 Citation Count
- B62M Class
- 4.73 % this patent is cited more than
- 11 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 | Mar 30, 2026 |
