Safety device for operator protection in low-height shaft bottom end elevators and elevator equipped therewith
US7832526B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 5, 2004 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | Jan 2, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A30/60
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The safety device according to the invention for operator protection in elevators with a low-height shaft bottom (5), is characterized in that it uses a brace (1) hinged on abase plate (3) secured to the bottom of the shaft (5) and arranged when folded in the horizontal position at a reduced height above the shaft bottom (5) in normal elevator operation, and a buffer element (9) secured underneath the car (11) and adapted to come into contact with a horizontal side surface of the brace (1) in its folded position, wherein said brace (1) is adapted to be moved by an appropriate lifting device (31) to a vertical lifted position in which the buffer element (9) can come into contact with an upper surface (15) of the brace (1), in a condition where the operator can work in the shaft bottom (5), wherein the length of the 15 brace added (1) to the thickness of the buffer element (9) provides for a sufficient depth between the underside of the car (11) and the shaft bottom (5) to suppress any risk for the operator to be crushed in the shaft bottom (5).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.