Bridge rails for horizontally moveable passenger or freight cab
US5950769A · kind A · utility
1Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1998 |
| Grant date | Sep 14, 1999 |
| Priority date | — |
| Expiry date | Feb 13, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B9/00
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Passenger or freight cabs 9 can roll on bridge rails 24, 25; 54, 55; 64, 65, between a pair of platforms such as an elevator car frame 19, a horizontal transport bogie 41, or a stationary platform 68. The bridge rails may move from a first position to a second position where they are parallel to, coaligned with and overlapping rails on one of the platforms so as to permit transferring a cab, either by individually rotating through corresponding axes passing through each rail, or by rotating a pair of such rails together about an axis passing between them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.