Four-wheel independent suspension system for an electric wheelchair
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 26, 2015
Grant Date -
N/A
app pub date -
Apr 10, 2014
filing date -
Apr 10, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A four-wheel independent suspension system for an electric wheelchair includes a chassis, two front wheels each fixed to a front rod respectively, and two rear wheels each fixed to a rear rod respectively. The chassis includes a rail extending in a width direction of the chassis, each of the front and rear rods has one end connected to a square first connecting sleeve, in the first connecting sleeve is disposed a first shock absorber which includes a rectangular outer pipe, and a rectangular inner pipe disposed in and rotated degrees with respect to the outer pipe, the edges of the inner pipe are abutted against the inner surface of the outer pipe, between each of the edges of the inner pipe and the inner space of the outer pipe is disposed an elastic rubber, the inner pipe of each of the first shock absorbers is sleeved on the rail.
First Claim
Other Claims data not available
Family
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
- 5 Citation Count
- B60G Class
- 8.51 % 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 | Nov 26, 2026 |