US4643224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alarm test device for a sprinkler system
Assignee: Victaulic Co
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Filing: 1985-09-04
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Granted: 1987-02-17
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Expires: 2005-09-04
Abstract
Abstract An alarm test device for a sprinkler system incorporates test and drain valves, together with a sight glass and a metering orifice into a single test valve, with the option of employing a plug valve as the test and drain valves, and the further option of employing a combined sight glass and metering orifice as the plug valve.
Inventors
- 👤 Robert Rung
- 👤 Philip R. Schwarz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:08
CPC Classifications
A; A62; A62C; A62C37/00; A62C37/50; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8359; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86734; Y10T137/86743; Y10T137/86751; Y10T137/87265; Y10T137/87298; Y10T137/87322; Y10T137/8741; Y10T137/87539; Y10T137/877; Y10T137/87788; Y10T137/8782
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
136 words
An alarm test module for a fire extinguishing sprinkler system, including in combination: a unitary valve body providing an inlet, an outlet, and at least one valve seat communicating said inlet with said outlet; a sight glass in the form of a solid cylinder of transparent material extending transversely through said valve body and exposed at opposite end viewing surfaces located externally of said valve body, said sight glass being interposed between said inlet and said outlet and having a metering passage extending diametrically therethrough providing for controlled communication of said inlet with said outlet; and, valve means cooperating with said at least one valve seat for selectively connecting said inlet directly to said outlet, for selectively connecting said inlet to said outlet via said metering orifice, and for selectively isolating said inlet from said outlet.
Claim 2
Dependent Claim
136 words
An alarm test module for a fire extinguishing sprinkler system, including in combination: a unitary valve body providing an inlet, an outlet, and at least one valve seat communicating said inlet with said outlet; a sight glass in the form of a solid cylinder of transparent material extending transversely through said valve body and exposed at opposite end viewing surfaces located externally of said valve body, said sight glass being interposed between said inlet and said outlet and having a metering passage extending diametrically therethrough providing for controlled communication of said inlet with said outlet; and, valve means cooperating with said at least one valve seat for selectively connecting said inlet directly to said outlet, for selectively connecting said inlet to said outlet via said metering orifice, and for selectively isolating said inlet from said outlet.
Claim 3
Dependent Claim
42 words
The alarm test device of claim 1, including dual said valve seats, and dual valve members providing said valve means, the respective said valve members being associated with one of said valve seats, said valve members being operable independently of each other.
Claim 4
Dependent Claim
32 words
The alarm test device of claim 1, including dual said valve seats, said at least one valve member cooperating with said valve seats and being operative to selectively close said valve seats.
Claim 5
Dependent Claim
67 words
The alarm test device of claim 3, in which said at least one said valve member is a rotatable plug valve operative in one angular position of rotation to isolate said inlet from said outlet, and in another angular position to communicate said inlet directly with said outlet, in another angular position to communicate said inlet with said outlet via said combined metering orifice and sight glass.
Claim 6
Dependent Claim
76 words
The alarm test device of claim 3, in which said at least one valve member is a rotatable plug valve comprised of said combined metering orifice and sight glass, and operative in one angular position of rotation to isolate said inlet from said outlet, and in another angular position of rotation to connect said inlet with said outlet, and in another angular position of rotation to connect said inlet with said outlet via said metering orifice.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-16 | 1990-08-18 | 1991-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-16 | 1994-08-18 | 1995-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-16 | 1998-08-18 | 1999-02-17 | $7700.00 | Window Closed / Lapsed |