Power assisted wheeled carriage
US6772850B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2000 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Jan 21, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A power assisted wheeled carriage includes a patient support having a length, a wheeled base supporting the patient support, and an auxiliary wheel mechanism including an auxiliary wheel spring support for biasing an auxiliary wheel into contact with a floor. The carriage further includes a control apparatus for moving the auxiliary wheel away from the floor. The auxiliary wheel spring support can be a spring steel member having an opening and biased to move the auxiliary wheel into contact with the floor. The control apparatus can include a foot pedal for turning a rotatable shaft that enables a cam apparatus to apply an upward force to the auxiliary wheel. The wheeled carriage also includes a drive handle pivotable about a single axis to control a drive motor for the auxiliary wheel. The drive handle controls driving of the wheeled carriage in forward and rearward directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.