Patent US4017844A successfully refreshed from Google Patents.
US4017844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire protection apparatus
Assignee: Kidde Inc
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Filing: 1975-07-14
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Granted: 1977-04-12
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Expires: 1995-07-14
Abstract
Abstract A multi-zone fire protection system in which each protected zone is provided with a detector for producing an alarm signal in response to the presence of combustion products, a source of fire extinguishing agent, and a pull box station manually operable to induce discharge of the extinguishing agent into the protected zone. Each pull station possesses a signal lamp that can be energized to signal an abnormal condition to personnel present in the area. A signal lamp in a given zone is energized via a central control panel in response to an alarm signal from a detector associated with that zone, thereby clearly indicating to personnel at hand the specific zone in which a fire has been detected.
Inventors
- 👤 Enio Facchini
- 👤 Carl I. Swanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:55
CPC Classifications
A; A62; A62C; A62C37/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
99 words
Fire control apparatus comprising: a box for mounting on a support surface; a first electrical switch mounted in said box and manually operable from an open to a closed position; latch means for latching said first switch in said closed position; a second electrical switch mounted in said box and manually operable from an open to a closed position; restoring means for returning said second switch to said open position after being manually actuated into said closed position; and mechanical indicator means for providing a visual indication in response to movement of said first switch into said closed position.
Claim 2
Dependent Claim
99 words
Fire control apparatus comprising: a box for mounting on a support surface; a first electrical switch mounted in said box and manually operable from an open to a closed position; latch means for latching said first switch in said closed position; a second electrical switch mounted in said box and manually operable from an open to a closed position; restoring means for returning said second switch to said open position after being manually actuated into said closed position; and mechanical indicator means for providing a visual indication in response to movement of said first switch into said closed position.
Claim 3
Dependent Claim
22 words
Apparatus according to claim 1 including manual actuator means for simultaneously actuating both said first and second switches into said closed positions.
Claim 4
Dependent Claim
21 words
Apparatus according to claim 2 wherein said indicator means is coupled to said manual actuator so as to be actuated thereby.
Claim 5
Dependent Claim
34 words
Apparatus according to claim 3 wherein said indicator means comprises a flag portion normally concealed by said box and moved into an exposed position in response to closing of said first and second switches.
Claim 6
Dependent Claim
19 words
Apparatus according to claim 4 wherein said flag portion is retained in said exposed position by said latch means.
Claim 7
Dependent Claim
18 words
Apparatus according to claim 1 wherein said box comprises removable indicia means illustrating the function of said box
Claim 8
Dependent Claim
21 words
Apparatus according to claim 6 wherein said indicia means comprises a window and including electrical lamp means for illuminating said window.
References Cited (Backward Citations)
US3253272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-11 | 1980-10-11 | 1981-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-11 | 1984-10-11 | 1985-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-11 | 1988-10-11 | 1989-04-12 | $7700.00 | Window Closed / Lapsed |