Legged mobile robot foot structure
US5416393A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1993 |
| Grant date | May 16, 1995 |
| Priority date | — |
| Expiry date | May 20, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D57/032
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A foot structure of a biped waling mobile robot having a body and two articulated legs each having a foot at its distal end. In the foot structure, a movable foot piece is housed in each foot which is driven by an actuator to be swung out to enlarge the ground contact surface. A controller provided for the actuator and based on a condition of walking such as stair descending, it controls the operation of the actuator such that the foot's ground contact surface is enlarged. The structure has another aspect in which a ratio between distances from a point at which the foot is connected to the leg to the foot ends can also be adjusted in response to the walking condition. Moreover, the foot can be arranged such that the foot is configured to have portions to be contact with the ground at its four corners and the movable foot pieces have additional contact portion enlarging or reducing the ground contact portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.