US4418330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic sequential combination locking device
Assignee: Individual
•
Filing: 1981-09-04
•
Granted: 1983-11-29
•
Expires: 2001-09-04
Abstract
Abstract An electronic sequential combination locking device comprising a main switch to which a timer circuit is connected. The timer circuit is activated by the main switch to provide a timer output signal after a predetermined time lapse. An electronic switch means is connected to receive the timer output signal. An alarm is connected to the electronic switch means and is operable by the presence of the timer output signal. A combination lock circuit having a plurality of manually actionable switches is operable in a predetermined sequence to activate a supply switch and disable the electronic switch. The supply switch provides a supply to an operable means.
Inventors
- 👤 Stephen Kamichik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:38
CPC Classifications
B; B60; B60R; B60R25/00; B60R25/10; B60R25/1003; B60R25/1018
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
188 words
An electronic sequential combination locking device comprising a main switch, a timer circuit connected to said main switch through a first relay device, said timer circuit being activated by said main switch to provide a timer output signal after a predetermined time lapse, an electronic switching element connected to receive said timer output signal, alarm means connected to said electronic switching element and operable by said timer output signal, a combination lock circuit having a plurality of manually actionable switch circuits operable in a predetermined sequence to activate a second relay device and disable said electronic switching element through a feedback connection between said first and second relay devices, said electronic switching element when activated by said timer output signal after said time lapse applying power to said first relay device which activates said alarm means and disables said combination lock circuit, said second relay device providing a supply to an ignition circuit of an automobile, said second relay device having two sets of contacts through which power is supplied to said ignition circuit when said second relay device is activated and said alarm means is simultaneously disabled.
Claim 2
Dependent Claim
188 words
An electronic sequential combination locking device comprising a main switch, a timer circuit connected to said main switch through a first relay device, said timer circuit being activated by said main switch to provide a timer output signal after a predetermined time lapse, an electronic switching element connected to receive said timer output signal, alarm means connected to said electronic switching element and operable by said timer output signal, a combination lock circuit having a plurality of manually actionable switch circuits operable in a predetermined sequence to activate a second relay device and disable said electronic switching element through a feedback connection between said first and second relay devices, said electronic switching element when activated by said timer output signal after said time lapse applying power to said first relay device which activates said alarm means and disables said combination lock circuit, said second relay device providing a supply to an ignition circuit of an automobile, said second relay device having two sets of contacts through which power is supplied to said ignition circuit when said second relay device is activated and said alarm means is simultaneously disabled.
Claim 3
Dependent Claim
27 words
The device of claim 1 wherein said timer output signal is connected to an inverting switch transistor which supplies a positive pulse to said electronic switching element.
Claim 4
Dependent Claim
80 words
The device of claim 2 wherein said timer circuit comprises an astable square wave generator producing said output signal, said electronic switching element is a silicon control rectifier which is connected to the winding of said relay device, said first relay device having two sets of contacts to supply power to said timer and said combination lock when said first relay device is not activated by said silicon control rectifier and to supply power to said alarm means when activated.
Claim 5
Dependent Claim
50 words
The device of claim 3 wherein said alarm means comprises a beeper circuit which is a square wave signal generator connected at an output thereof to a beeper relay device, said square wave generator producing a square wave output signal to said beeper relay device to activate an alarm device.
Claim 6
Dependent Claim
33 words
The device of claim 4 wherein said alarm means further comprises a connection through one of said sets of contacts of said first relay device connected to one or more further alarm devices.
Claim 7
Dependent Claim
28 words
The device of claim 5 wherein said alarm device connected to said beeper relay device is a vehicle horn, said further alarm device being a vehicle light circuit.
Claim 8
Dependent Claim
34 words
The device of claim 1 wherein said manually actionable switch circuits comprise a plurality of electronic switches connected in a power supply line to provide power to a winding of said second relay device.
Claim 9
Dependent Claim
26 words
The device of claim 7 wherein there is further provided a power disconnecting switch connected in said supply line to disconnect said power supply when activated.
Claim 10
Dependent Claim
35 words
The device of claim 7 wherein said plurality of electronic switch circuits comprise a silicon control rectifier which is fired by closing a switch contact associated therewith whereby an anode of said rectifier is grounded.
Claim 11
Dependent Claim
27 words
The device of claim 7 wherein said operable means is an electromagnet operating a locking bolt for securing a closure means to prevent access to an enclosure.
Claim 12
Dependent Claim
16 words
The device of claim 1 wherein said main switch is a vehicle key operated ignition switch.
References Cited (Backward Citations)
US3422398A
Cited
US3611287A
Cited
US3755776A
Cited
US4205300A
Cited
US4277777A
Cited
EP0010084A1
Cited
US4320382A
Cited
US4335370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-28 | 1987-05-30 | 1987-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-28 | 1991-05-30 | 1991-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-28 | 1995-05-30 | 1995-11-29 | $7700.00 | Window Closed / Lapsed |