发明名称 |
INTERCOM UNIT FOR PROVIDING A STATUS ALERT FOR A MOVABLE BARRIER |
摘要 |
An access control system is provided for a movable barrier. A main communication unit grants access to a movable barrier operator. The movable barrier operator controls movement of the movable barrier. A remote communication unit has an input device to receive an access request and to transmit a corresponding access signal to the main communication unit and to transmit a status indication to the main communication unit in response to detecting a predetermined event. |
申请公布号 |
CA2604669(A1) |
申请公布日期 |
2008.04.02 |
申请号 |
CA20072604669 |
申请日期 |
2007.09.28 |
申请人 |
THE CHAMBERLAIN GROUP, INC. |
发明人 |
RAINEY, ROBERT;GIOIA, WILLIAM G. |
分类号 |
E05F15/20;E01F13/04;E06B11/02;G08C17/02;G08C19/00;G08C23/00;H04Q9/00 |
主分类号 |
E05F15/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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