Patent US4227577A successfully refreshed from Google Patents.
US4227577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire-extinguishing system
Assignee: SECURITY PATROLS CO Ltd
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Filing: 1978-04-12
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Granted: 1980-10-14
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Expires: 1998-04-12
Abstract
Abstract A fire extinguishing system coupled with a guarding system for the protecting same region as covered by the fire extinguishing system, and provided with at least one intrusion sensor arranged at desired locations in the region. The fire-extinguishing system is provided with at least one fire sensor arranged in the region and at least one fire extinguishing device for extinguishing a fire, and is connected to the guarding system by a warning signal transmission device provided with a logic circuit for identifying three different conditions based upon whether the fire sensor(s) detects a breakout of a fire or not and whether the intrusion sensor(s) detects an intruder or not. The above-mentioned fire extinguishing system can be further coupled with a switching device for identifying conditions with regard to whether the fire extinguishing system and the guarding system are intentionally set in a self actuatable condition or not.
Inventors
- 👤 Makoto Iida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:46
CPC Classifications
G; G08; G08B; G08B19/00; A; A62; A62C; A62C37/00; A62C37/36; A62C37/44
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
246 words
A fire extinguishing system coupled with a guarding system for protecting the same region, said guarding system including at least one intrusion sensor positioned in said region for providing an abnormal condition signal when a person is in said region, said fire extinguishing system comprising: (a) at least one fire sensor for monitoring a condition indicative of a fire and for providing a fire signal upon the sensing of the condition; (b) at least one fire extinguishing device; (c) at least one manually operable means for operation by a person to activate said fire extinguishing device; and (d) logic conduit means coupled to said at least one intrusion sensor, said at least one fire sensor, and said at least one manually operable means wherein said logic circuit means: (i) provides an actuation signal to said at least one fire extinguishing device when at least one of said at least one fire sensor detects a fire condition in said protected region and at least one of said at least one intrusion sensor does not detect an abnormal condition; (ii) does not provide an actuation signal to said at least one fire extinguishing device when said at least one fire sensor detects a fire condition in said protected region and said at least one intrusion sensor detects an abnormal condition; and (iii) provides an actuation signal to said at least one fire extinguishing device when at least one of said at least one manually operable means are actuated.
Claim 2
Dependent Claim
246 words
A fire extinguishing system coupled with a guarding system for protecting the same region, said guarding system including at least one intrusion sensor positioned in said region for providing an abnormal condition signal when a person is in said region, said fire extinguishing system comprising: (a) at least one fire sensor for monitoring a condition indicative of a fire and for providing a fire signal upon the sensing of the condition; (b) at least one fire extinguishing device; (c) at least one manually operable means for operation by a person to activate said fire extinguishing device; and (d) logic conduit means coupled to said at least one intrusion sensor, said at least one fire sensor, and said at least one manually operable means wherein said logic circuit means: (i) provides an actuation signal to said at least one fire extinguishing device when at least one of said at least one fire sensor detects a fire condition in said protected region and at least one of said at least one intrusion sensor does not detect an abnormal condition; (ii) does not provide an actuation signal to said at least one fire extinguishing device when said at least one fire sensor detects a fire condition in said protected region and said at least one intrusion sensor detects an abnormal condition; and (iii) provides an actuation signal to said at least one fire extinguishing device when at least one of said at least one manually operable means are actuated.
Claim 3
Dependent Claim
16 words
A fire extinguishing system according to claim 1, wherein said fire sensor is a smoke sensor.
Claim 4
Dependent Claim
16 words
A fire extinguishing system according to claim 1, wherein said fire sensor is a flame sensor.
Claim 5
Dependent Claim
16 words
A fire extinguishing system according to claim 1, wherein said fire sensor is a heat sensor.
Claim 6
Dependent Claim
57 words
A fire extinguishing system according to claim 1, further comprising: (a) a monitoring means for indicating whether said at least one fire sensor and/or said at least one intrusion sensor detect abnormal conditions in said region; and (b) a switching means for switching on or off a connection between said monitoring means and said logic circuit means.
Claim 7
Dependent Claim
20 words
A fire extinguishing system according to claim 5, wherein said switching means is an interface capable of identifying identification elements.
Claim 8
Dependent Claim
18 words
A fire extinguishing system according to claim 5, wherein said switching means is an electro-mechanical locking key means.
Claim 9
Dependent Claim
26 words
A fire extinguishing system according to claim 5, further comprising an alarm means for issuing an alarm signal in response to actuation of said monitoring means.
Claim 10
Dependent Claim
106 words
A fire extinguishing system according to claim 5, wherein said logic circuit means: (i) provides an actuation signal when said at least one intrusion sensor does not detect an abnormal condition in said region and said at least one fire sensor detects a fire condition in said region while said switching means is set in an on-condition thereof, and (ii) does not provide an actuation signal when said at least one intrusion sensor does not detect an abnormal condition in said region and said at least one fire sensor detects a fire condition in said region while said switching means is set in an off-condition thereof.
Claim 11
Dependent Claim
76 words
A fire extinguishing system according to claim 5, wherein said logic circuit means does not provide an actuation signal when said at least one intrusion sensor detects an abnormal condition in said region, said at least one fire sensor detects a fire condition in said region and said switching means is in the off-condition, wherein said fire extinguishing device can be actuated only by operating at least one of said at least one manually operable means.
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) | 1983-10-14 | 1984-04-14 | 1984-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-14 | 1988-04-14 | 1988-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-14 | 1992-04-14 | 1992-10-14 | $7700.00 | Window Closed / Lapsed |