Guide bar for an elevator door
US5174675A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1991 |
| Grant date | Dec 29, 1992 |
| Priority date | — |
| Expiry date | Dec 20, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/75
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A guide bar for an elevator door includes a beam having a plurality of attachment apertures formed therein for the attachment of a guide, sliding or roller. The apertures are arranged in a staggered pattern providing for numerous adjustment possibilities for the guide to accommodate variations between the door and a guide track for the door. The guide is attached to a first horizontal web of the beam and extends into a groove mortised into the door sill, whereby the elevator door is guided at the lower end along a predetermined sliding track. Each aperture is formed from three overlapping circular recesses, the center points of which form an isosceles triangles such that bolt heads of fasteners are supported on at least two thirds of their circumference by the first web. The center points of the recesses of the apertures are staggered with respect to the center points of each of the other recesses in a direction transverse of the first web by a step width to provide a plurality of adjustment possibilities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.