US3569928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically actuated safety alarm circuit
Assignee: Individual
•
Filing: 1967-08-04
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Granted: 1971-03-09
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Expires: 1987-08-04
Abstract
Abstract A regulating or alarm circuit controlled by magnetic fields comprising one or more protective gas glass bulb contacts having poles set by a magnet and integrated by controlling magnets which complete the quoted pole setting by the first magnet, causing the contacts to close, thereby actuating the regulating or alarming circuits.
Inventors
- 👤 Alfonso Avallone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:58
CPC Classifications
G; G08; G08B; G08B13/00; B; B60; B60R; B60R25/00; B60R25/10; B60R25/1003
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
135 words
A vehicle antitheft device, comprising: an alarm; a contact making step-by-step switch including at least one contact and operatively connected to said alarm and having a plurality of positions, only one of which cuts off said alArm; contact means for impulsing said switch when actuated; said alarm and said step-by-step switch being mounted on a vehicle; portable magnetic means for closing and opening said impulsing contact means, respectively; and at least one alarm-initiating contact in series with said at least one contact of said switch, the alarm condition being set by stepping said switch from an alarm cutoff position by a variable first number of steps, and reset by stepping said switch by a second number of steps, the sum of the two numbers being equal to the number of positions of said step-by-step switch.
Claim 2
Dependent Claim
135 words
A vehicle antitheft device, comprising: an alarm; a contact making step-by-step switch including at least one contact and operatively connected to said alarm and having a plurality of positions, only one of which cuts off said alArm; contact means for impulsing said switch when actuated; said alarm and said step-by-step switch being mounted on a vehicle; portable magnetic means for closing and opening said impulsing contact means, respectively; and at least one alarm-initiating contact in series with said at least one contact of said switch, the alarm condition being set by stepping said switch from an alarm cutoff position by a variable first number of steps, and reset by stepping said switch by a second number of steps, the sum of the two numbers being equal to the number of positions of said step-by-step switch.
Claim 3
Dependent Claim
55 words
The vehicle antitheft device, as set forth in claim 1, further comprising a thermally actuated contact means in series with said at least one contact and said alarm for actuating said alarm for a predetermined period when said at least one alarm-initiating contact is actuated when said switch is set in a noncutoff alarm position.
Claim 4
Dependent Claim
50 words
The vehicle antitheft device, as set forth in claim 2, further comprising: a motor vehicle to which said antitheft device is set; said at least one alarm-initiating contact being operatively mounted on doors, windows and bonnet of said motor vehicle; and said alarm constitutes the horn of said motor vehicle.
Claim 5
Dependent Claim
49 words
The vehicle antitheft device, as set forth in claim 1, wherein: said contact means comprises a first reed switch and adapted to be positioned for ready access by a person to be opened and closed by said magnetic means; and container means for mounting the remainder of said device.
Claim 6
Dependent Claim
30 words
The vehicle antitheft device, as set forth in claim 4, wherein said magnetic means includes thereon a mnemonic device corresponding to the impulse steps required to set said step-by-step switch.
Claim 7
Dependent Claim
61 words
The vehicle antitheft device, as set forth in claim 4, further comprising a second reed switch means mounted adjacent said first reed switch and connected in series with said at least one contact and adapted to be actuated by a magnet stronger than said magnetic means for actuating said alarm when said step-by-step switch is set in a noncutoff alarm position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |