Elevator lintel door lock safety devices
US11091351B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2018 |
| Grant date | Aug 17, 2021 |
| Priority date | — |
| Expiry date | Jan 7, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05B65/0811
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Elevator lintel door lock safety devices having a frame mountable to a lintel, a lintel door lock fixed to the frame and having a first lock element rotatable relative to a second lock element, a contact plate fixed to the first lock element and moveable therewith, the contact plate having at least one contact attached thereto, a contact receiver attached to the frame and part of a safety chain, the contact receiver having at least one contact receiver aperture arranged to receive a respective contact of the contact plate, and a blocking element pivotably mounted to the frame wherein a portion of the blocking element is moveable between (i) a first position to prevent the at least one contact from engaging with a respective contact receiver aperture and (ii) a second position that allows the at least one contact to engage with the respective contact receiver aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.