Patent US3750161A successfully refreshed from Google Patents.
US3750161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire detector and extinguisher system
Assignee: Individual
•
Filing: 1972-06-05
•
Granted: 1973-07-31
•
Expires: 1992-06-05
Abstract
Abstract The system uses a plurality of light sensitive diodes, a plurality of relays, a timer and a plurality of solenoids to detect fire and to control the quantity and distribution of fire fighting substance used on the fire.
Inventors
- 👤 L Teeters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:40
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
482 words
A fire detector and extinguisher system for use with a source of fuel and first and second fire extinguishers, said system comprising: first and second light sensitive diodes, ach having an anode and a cathode; first and second relays, each having a coil and first and second pairs of normally open contacts, said coil of said first relay being coupled to said first diode, said coil of said second relay being coupled to said second diode; third and fourth relays, each having a coil and first and second pairs of normally open contacts and a third pair of normally closed contacts; first and second reference potentials; a timer having a coil and a pair of normally closed contacts, said first pair of contacts of said first, said second and said third relays each being connected between said first potential and a first contact of siad timer, said coil of said third relay being connected between said second potential and a second contact of said timer; first, second and third solenoids each having first and second terminals, said first and said second solenoids each controlling the output of a corresponding one of said extinguishers, said third solenoid controlling said source of fuel, a switch having first and second terminals, said first terminal of said switch being connected to said first potential, said first pair of contacts of said fourth relay being connected between said second terminal of said second terminal of said switch and a first terminal of said third solenoid, said second terminal of said third solenoid being connected to said second potential, said coil of said fourth relay being connected between said first and said second terminals of said third solenoid, said third pair of contacts of said fourth relay being connected between said first terminal of said third solenoid and a first end of said coil of said timer, a second end of said coil of said timer being connected to said second potential, said second solenoid and said second pair of contacts of said second relay being serially connected between said first and said second ends of said coil of said timer, said first solenoid and said second pair of contacts of said first relay being serially connected between said first and said second end of said coil of said timer, said second pair of contacts of said third relay being connected between said first potential and said first end of said coil of said timer; and first and second bulbs each having first and second leads, said first leads of said first and said second bulbs being connected to said second potential, said third pair of contacts of said third relay being connected between said first potential and said second lead of said first bulb, said second pair of contacts of said fourth relay being connected between said first potential and said second lead of said second bulb.
Claim 2
Dependent Claim
482 words
A fire detector and extinguisher system for use with a source of fuel and first and second fire extinguishers, said system comprising: first and second light sensitive diodes, ach having an anode and a cathode; first and second relays, each having a coil and first and second pairs of normally open contacts, said coil of said first relay being coupled to said first diode, said coil of said second relay being coupled to said second diode; third and fourth relays, each having a coil and first and second pairs of normally open contacts and a third pair of normally closed contacts; first and second reference potentials; a timer having a coil and a pair of normally closed contacts, said first pair of contacts of said first, said second and said third relays each being connected between said first potential and a first contact of siad timer, said coil of said third relay being connected between said second potential and a second contact of said timer; first, second and third solenoids each having first and second terminals, said first and said second solenoids each controlling the output of a corresponding one of said extinguishers, said third solenoid controlling said source of fuel, a switch having first and second terminals, said first terminal of said switch being connected to said first potential, said first pair of contacts of said fourth relay being connected between said second terminal of said second terminal of said switch and a first terminal of said third solenoid, said second terminal of said third solenoid being connected to said second potential, said coil of said fourth relay being connected between said first and said second terminals of said third solenoid, said third pair of contacts of said fourth relay being connected between said first terminal of said third solenoid and a first end of said coil of said timer, a second end of said coil of said timer being connected to said second potential, said second solenoid and said second pair of contacts of said second relay being serially connected between said first and said second ends of said coil of said timer, said first solenoid and said second pair of contacts of said first relay being serially connected between said first and said second end of said coil of said timer, said second pair of contacts of said third relay being connected between said first potential and said first end of said coil of said timer; and first and second bulbs each having first and second leads, said first leads of said first and said second bulbs being connected to said second potential, said third pair of contacts of said third relay being connected between said first potential and said second lead of said first bulb, said second pair of contacts of said fourth relay being connected between said first potential and said second lead of said second bulb.
Claim 3
Dependent Claim
170 words
A fire detector and extinguisher system as defined in claim 1 including: first and second transistors each having a base, a collecTor and an emitter, said emitters of said first and said second transistors being connected to said second potential, said coil of said first relay being connected between said first potential and said collector of said first transistor, said coil of said second relay being connected between said first potential and said collector of said second transistor; and first, second, third and fourth resistors, said first resistor being connected between said second potential and said cathode of said first diode, said anodes of said first and said second diodes being coupled to said first potential, said second resistor being connected between said cathode of said first diode and said base of said first transistor, said third resistor being connected between said second potential and said cathode of said second diode, said fourth resistor being connected between said cathode of said second diode and said base of said second transistor.
Claim 4
Dependent Claim
51 words
A fire detector and extinguisher system as defined in claim 1 including: an alarm having first and second terminals, said first terminal of said alarm being connected to said first lead of said second bulb, said second terminal of said alarm being connected to said second lead of said second bulb.
Claim 5
Dependent Claim
209 words
A fire detector and extinguisher system as defined in claim 1 including: first and second transistors each having a base, a collector and an emitter, said emitters of said first and said second transistors being connected to said second potential, said coil of said first relay being connected between said first potential and said collector of said first transistor, said coil of said second relay being connected between said first potential and said collector of said second transistor; first, second, third and fourth resistors, said first resistor being connected between said second potential and said cathode of said first diode, said anodes of said first and said second diodes being coupled to said first potential, said second resistor being connected between said cathode of said first diode and said base of said first transistor, said third resistor being connected between said second potential and said cathode of said second diode, said fourth resistor being connected between said cathode of said second diode and said base of said second transistor; and an alarm having first and second terminals, said first terminal of said alarm being connected to said first lead of said second bulb, said second terminal of said alarm being connected to said second lead of said second bulb.
Claim 6
Dependent Claim
481 words
A fire detector and extinguisher system for use with a source of fuel and first and second fire extinguishers, said system comprising: first and second light sensitive diodes each having an anode and a cathode; first and second relays each having a coil and first and second pairs of normally open contacts, said coil of said first relay being coupled to said first diode, said coil of said second relay being coupled to said second diode; third and fourth relays each having a coil and first and second pairs of normally open contacts and a third pair of normally closed contacts; first and second, third and fourth reference potentials; a timer having a coil and a pair of normally closed contacts, said first pair of contacts of said first, said second and said third relays each being connected between said first potential and a first contact of said timer, said coil of said third relay being connected between said second potential and a second contact of said timer; first, second and third solenoids each having first and second terminals, said first and said second solenoids each controlling the output of a corresponding one of said extinguishers, said third solenoid controlling said source of fuel, a switch having first and second terminals, said first terminals of said switch being connected to said third potential, said first pair of contacts of said fourth relay being connected between said second terminal of said switCh and a first terminal of said third solenoid, said second terminal of said third solenoid being connected to said fourth potential, said coil of said fourth relay being connected between said first and said second terminals of said third solenoid, said third pair of contacts of said fourth relay being connected between said first terminals of said third solenoid and a first end of said coil of said timer, a second end of said coil of said timer being connected to said fourth potential, said second solenoid and said second pair of contacts of said second relay being serially connected between said first and said second ends of said coil of said timer, said first solenoid and said second pair of contacts of said first relay being serially connected between said first and said second end of said coil of said timer, said second pair of contacts of said third relay being connected between said third potential and said first end of said coil of said timer; and first and second bulbs each having first and second leads, said first leads of said first and said second bulbs being connected to said fourth potential, said third pair of contacts of said third relay being connected between said third potential and said second lead of said first bulb, said second pair of contacts of said fourth relay being connected between said third potential and said second lead of said second bulb.
Claim 7
Dependent Claim
481 words
A fire detector and extinguisher system for use with a source of fuel and first and second fire extinguishers, said system comprising: first and second light sensitive diodes each having an anode and a cathode; first and second relays each having a coil and first and second pairs of normally open contacts, said coil of said first relay being coupled to said first diode, said coil of said second relay being coupled to said second diode; third and fourth relays each having a coil and first and second pairs of normally open contacts and a third pair of normally closed contacts; first and second, third and fourth reference potentials; a timer having a coil and a pair of normally closed contacts, said first pair of contacts of said first, said second and said third relays each being connected between said first potential and a first contact of said timer, said coil of said third relay being connected between said second potential and a second contact of said timer; first, second and third solenoids each having first and second terminals, said first and said second solenoids each controlling the output of a corresponding one of said extinguishers, said third solenoid controlling said source of fuel, a switch having first and second terminals, said first terminals of said switch being connected to said third potential, said first pair of contacts of said fourth relay being connected between said second terminal of said switCh and a first terminal of said third solenoid, said second terminal of said third solenoid being connected to said fourth potential, said coil of said fourth relay being connected between said first and said second terminals of said third solenoid, said third pair of contacts of said fourth relay being connected between said first terminals of said third solenoid and a first end of said coil of said timer, a second end of said coil of said timer being connected to said fourth potential, said second solenoid and said second pair of contacts of said second relay being serially connected between said first and said second ends of said coil of said timer, said first solenoid and said second pair of contacts of said first relay being serially connected between said first and said second end of said coil of said timer, said second pair of contacts of said third relay being connected between said third potential and said first end of said coil of said timer; and first and second bulbs each having first and second leads, said first leads of said first and said second bulbs being connected to said fourth potential, said third pair of contacts of said third relay being connected between said third potential and said second lead of said first bulb, said second pair of contacts of said fourth relay being connected between said third potential and said second lead of said second bulb.
Claim 8
Dependent Claim
169 words
A fire detector and extinguisher system as defined in claim 5 including: first and second transistors each having a base, collector and an emitter, said emitters of said first and said second transistors being connected to said second potential, said coil of said first relay being connected between said first potential and said collector of said first transistor, said coil of said second relay being connected between said first potential and said collector of said second transistors; and first, second, third and fourth resistors, said first resistor being connected between said second potential and said cathode of said first diode, said anodes of said first and said second diodes being coupled to said first potential, said second resistor being connected between said cathode of said first diode and said base of said first transistor, said third resistor being connected between said second potential and said cathode of said second diode, said fourth resistor being connected between said cathode of said second diode and said base of said second transistor.
Claim 9
Dependent Claim
51 words
A fires detector and extinguisher system as defined in claim 5 including: an alarm having first and second terminals, said first terminals of said alarm being connected to said first lead of said second bulb, said second terminal of said alarm being connected to said second lead of said second bulb.
Claim 10
Dependent Claim
209 words
A fire detector and extinguisher system as defined in claim 5 including: first and second transistors each having a base, a collector and an emitter, said emitters of said first and said second transistors being connected to said second potential, said coil of said first relay being connected between said first potential and said collector of said first transistor, said coil of said second relay being connected between said first potential and said collector of said second transistor; first, second, third and fourth resistors, said first resistor being connected between said second potential and said cathode of said first diode, said anodes of said first and said second diodes being coupled to said first potential, said second resistor being connected between said cathode of said first diode and said base of said first transistor, said third resistor being connected between said second potential and said cathode of said second diode, said fourth resistor being connected between said cathode of said second diode and said base of said second transistor; and an alarm having first and second terminals, said first terminal of said alarm being connected to said first lead of said second bulb, said second terminal of said Alarm being connected to said second lead of said second bulb.
References Cited (Backward Citations)
US2570280A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |