System and related methods for signaling the position of a movable barrier and securing its position
US7207142B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 4, 2002 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | Dec 4, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/106
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system for signaling the position of a movable barrier includes a movable barrier; a motor coupled to the movable barrier for moving the movable barrier between limit positions; a position detection device that monitors the movable barrier to generate a barrier position signal; and an indication device that receives the barrier position signal and indicate a position of the movable barrier relative to the limit positions. The system also includes an operation mechanism for controlling the motor and at least one transmitter device which generates a transmission signal received by the operator mechanism to energize the motor. The system further includes a blocking switch which generates a blocking signal received by the operator mechanism to prevent receipt of a transmission signal from a device other than one associated with the indication device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.