Chair-lift with automatic control of the chair protective devices
US4784065A · kind A · utility
18Cited by
8References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 10, 1987 |
| Grant date | Nov 15, 1988 |
| Priority date | — |
| Expiry date | Mar 10, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61B12/002
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The opening and closing control system of a protective hood of a chair of a chair-lift comprises spring or gravity energy storage devices, to move the hood independently from the speed of the chair. The energy storage device is reloaded when the chair passes through the terminal and catches lock the hood in different positions. These catches are automatically controlled when the chair passes predetermined locations to achieve automatic control of opening and closing of the hood.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.