Movable barrier apparatus and methods for responding to barrier travel obstructions and abnormalities
US10968676B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2019 |
| Grant date | Apr 6, 2021 |
| Priority date | — |
| Expiry date | Apr 23, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/106
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Movable barrier monitoring apparatus and methods are provided for rapidly responding to barrier travel obstructions and other abnormal occurrences to cause the movable barrier operator to halt barrier travel or stop and reverse barrier travel, while ignoring typical and normal impediments to barrier travel. Alternate methods are described for programming the barrier operator controller to compare characteristics of the monitored barrier run over the defined travel path with the characteristics of a good barrier run without interruption to barrier travel, with the degree of differentiation of such characteristics determinative of whether the operator controller is to interrupt barrier travel or not.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.