Apparatus for stopping a passenger conveyor
US5611417A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1996 |
| Grant date | Mar 18, 1997 |
| Priority date | — |
| Expiry date | Apr 17, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B29/06
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An apparatus for stopping passenger conveyors, such as escalators and moving walkways having at least one comb plate, responds to movement of the comb plate due to an applied force to actuate a safety switch. The apparatus exerts a static trigger force on the comb plate which trigger force has horizontal and vertical components. The comb plate is movable horizontally and vertically against a static trigger force when the applied force exceeds one or both of the horizontal and vertical components. The trigger force is set by a biased trigger spring pivotally mounted on a carrier plate for the comb plate and acting at an adjustable angle relative to the horizontal plane permitting selection of the ratio of the horizontal component to the vertical component. The angular position can be reset manually within a certain angular range through engagement of detent notches on an abutment attached to the comb plate and detent pins connected to the trigger spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.