Vehicle with lockable casters
US5899469A · kind A · utility
46Cited by
19References
6Claims
0Family size
Inventors
Key dates
| Filing date | Feb 6, 1997 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Feb 6, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62B2301/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A substantially rectangular vehicle moveable on four casters located in the four corners underneath the vehicle. The front or rear pair of casters can be locked or unlocked electronically by a single individual propelling the vehicle from one end to facilitate movement over irregular surfaces or narrow passages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.