US4628400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic keyed lock
Assignee: UNGO SECURITY Corp
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Filing: 1986-03-04
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Granted: 1986-12-09
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Expires: 2006-03-04
Abstract
Abstract A keyed lock in which a key transmits programmed high frequency pulses which are capacitively coupled to an electronic lock which processes and decodes the high frequency pulses and provides an unlocking signal when the programmed pulses match a preset lock program.
Inventors
- 👤 Eugene Y. Ho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:00
CPC Classifications
G; G07; G07C; G07C9/00; G07C9/00174; G07C9/00182; G07C2009/00753; G07C2009/00769
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
122 words
An electronic keyed lock comprising a key including an oscillator operated to provide signals at a predetermined frequency outside the range of FCC licensing frequencies, means including an encoder for receiving said oscillator signals and providing programmed pulses of energy having said predetermined frequency means for applying power to said key and means for delaying the provision of programmed pulses for a predetermined time, a lock, means for coupling said programmed predetermined frequency pulses to said lock, means for receiving said programmed pulses of energy and forming output programmed pulses and a decoder pre-programmed with said pulse program for receiving said output pulses and providing an output signal when the output programmed pulses twice match the pre-programmed pulse program in said decoder.
Claim 2
Dependent Claim
122 words
An electronic keyed lock comprising a key including an oscillator operated to provide signals at a predetermined frequency outside the range of FCC licensing frequencies, means including an encoder for receiving said oscillator signals and providing programmed pulses of energy having said predetermined frequency means for applying power to said key and means for delaying the provision of programmed pulses for a predetermined time, a lock, means for coupling said programmed predetermined frequency pulses to said lock, means for receiving said programmed pulses of energy and forming output programmed pulses and a decoder pre-programmed with said pulse program for receiving said output pulses and providing an output signal when the output programmed pulses twice match the pre-programmed pulse program in said decoder.
Claim 3
Dependent Claim
18 words
An electronic keyed lock as in claim 1 in which said key is capacitively coupled to said lock.
Claim 4
Dependent Claim
38 words
An electronic keyed lock as in claim 2 in which said means for capacitively coupling the key to the lock includes a pair of conductive plates in said key and a pair of conductive plates in said lock.
Claim 5
Dependent Claim
27 words
An electronic keyed lock as in claim 3 in which said means including an encoder providing pulses of energy of opposite polarity to said pair of plates.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-12-08 | 1990-06-09 | 1990-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-08 | 1994-06-09 | 1994-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-08 | 1998-06-09 | 1998-12-09 | $7700.00 | Window Closed / Lapsed |