Entraining apparatus for elevator doors
US5575357A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 13, 1995 |
| Grant date | Nov 19, 1996 |
| Priority date | — |
| Expiry date | Apr 13, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B13/12
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An entraining apparatus for the coupling, unlatching and entraining of elevator shaft doors includes an entraining parallelogram which is movable laterally and is actuated by a door drive on an elevator car. The entraining parallelogram has two vertically extending entraining members, one entraining member being fixedly connected to a slide member horizontally movable in a guide (9) and pushed into a neutral abutment setting by a compression spring during the elevator travel. An arresting parallelogram includes a movable coulisse and the fixed entraining member coupled to an upper link having a pawl lever with a pawl. Upon arrival at a stopping floor, the entraining apparatus is pushed by a pair of shaft door rollers into a centered position and the left shaft door roller moves the coulisse inwardly to engage the pawl between teeth of a comb on the slide member and arrest the entraining apparatus. During travel of the car, the compression spring pushes the entraining apparatus to the neutral position. An eccentric can be rotated to prevent the coulisse from moving the pawl into the arresting position in order to permit adjustment operations on the door drive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.