Wheelchair lift systems
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 22, 2023
Grant Date -
May 6, 2021
app pub date -
Oct 29, 2020
filing date -
Oct 31, 2019
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A wheelchair lift system for a vehicle comprises: a platform for accommodating a wheelchair; a lifting arm; a hydraulic circuit including a hydraulic actuator arranged to act on the lifting arm to raise and lower the platform; a barrier mounted on the platform and pivotable between a raised position and a lowered position; a plurality of sensors each arranged to generate a sensor output; a user input device arranged to generate control signals to control operation of the lift; and a control unit. The control unit is arranged to receive the control signals and to receive the sensor output from each of the sensors and to control the hydraulic circuit thereby to control of the lift to perform a number of different operations. The control unit is also operable in a fully operational mode and a safety mode and is arranged to perform a plurality of checks on the sensor outputs, and to record a result of each of the checks, and to switch between the fully operational mode and the safety mode based on the results.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully