Elevator door roller and track replacement
US11731858B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2023 |
| Grant date | Aug 22, 2023 |
| Priority date | — |
| Expiry date | Jan 3, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B19/007
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method for replacing parts of an elevator door assembly including installing a hanger mount in an opening of the elevator door hanger, positioning a roller assembly on one side of the elevator door hanger, the roller assembly being configured to receive an engaging member, positioning a leveling cam on another side of the elevator door hanger, the leveling cam configured for sliding contact with a bearing surface of the hanger mount and having a first surface, a second surface, an opening between the first surface and the second surface, and a third surface for contacting the bearing surface, and inserting the engaging member through an opening of the hanger mount and the opening of the leveling cam, and securing the engaging member within the roller assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.