Communications: electrical – Systems – Signal box type
Patent
1995-06-26
1996-08-27
Peng, John K.
Communications: electrical
Systems
Signal box type
340542, 34082531, 70447, 70455, 70460, G08B 1300
Patent
active
055505295
ABSTRACT:
An electronic security enclosure conceals a device, such as a switch, valve, outlet, or lock, behind a movable member. When the movable member is unlocked, by an electronic key, and moved to reveal the concealed device, the key is captured, preventing its removal until the enclosure is again secured over the device. A variety of operational features, including provision for keyholder access restrictions, time-of-day restrictions, provision of different classes of keys for employees and vendors, etc., are also provided. The invention also contemplates a plurality of access control devices, including lock boxes, padlocks, mortise locks, cam locks, etc., that are each operable by a common electronic key.
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Peng John K.
Supra Products, Inc.
Woods Davetta C.
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