Patent US4830118A successfully refreshed from Google Patents.
US4830118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shut-off device for a sprinkler assembly
Assignee: Fire Sprinkler Specialties Inc
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Filing: 1987-12-24
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Granted: 1989-05-16
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Expires: 2007-12-24
Abstract
Abstract A device for terminating the flow of fire-extinguishing fluid from an activated sprinkler head of the pendent and sidewall types. A cavity within the device receives the sprinkler head and a protuberance within said cavity engages the valve assembly and returns the shut-off valve to the fluid-emitting conduit. Biased apertures within the sidewalls engage the sprinkler head flange and provide a locking means. The device is constructed from thermoplastic resins which melt and allow the device to become reactivated when ambient temperatures reach critical levels.
Inventors
- 👤 Vincent J. Capasso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:56
CPC Classifications
A; A62; A62C; A62C37/00; A62C37/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
148 words
A device for terminating fluid flow in a temperature-activated sprinkler head comprised of a water conduit, a bifurcated flange, circular housing, baffle plate and cutoff valve which comprises: (1) a cylindrical hollow body having at one end a contoured orifice for receiving a bifurcated flange of generally circular configuration said body consisting essentially of a thermoplastic composition which melts at sprinkler-activating temperatures; (2) a cavity formed by the inner sidewalls of said body which extend downwardly from said orifice and terminate in a flat laterally extending base so as to form a recess area for receiving said bifurcated flange, housing, baffle plate and valve assembly; (3) a circular projection centrally disposed within said cavity and extending upwardly from said base to provide a support surface upon which is secured a flat tubular seat for receiving said baffle plate; and (4) apertures within said body for engaging said flange.
Claim 2
Independent Claim
148 words
A device for terminating fluid flow in a temperature-activated sprinkler head comprised of a water conduit, a bifurcated flange, circular housing, baffle plate and cutoff valve which comprises: (1) a cylindrical hollow body having at one end a contoured orifice for receiving a bifurcated flange of generally circular configuration said body consisting essentially of a thermoplastic composition which melts at sprinkler-activating temperatures; (2) a cavity formed by the inner sidewalls of said body which extend downwardly from said orifice and terminate in a flat laterally extending base so as to form a recess area for receiving said bifurcated flange, housing, baffle plate and valve assembly; (3) a circular projection centrally disposed within said cavity and extending upwardly from said base to provide a support surface upon which is secured a flat tubular seat for receiving said baffle plate; and (4) apertures within said body for engaging said flange.
Claim 3
Dependent Claim
12 words
The device according to claim 1 wherein said apertures are oppositely disposed.
Claim 4
Dependent Claim
17 words
The device according to claim 2 wherein said apertures are in the form of horizontally disposed channels.
Claim 5
Dependent Claim
23 words
The device according to claim 3 wherein said channel members are biased and engage the projection members of said flange by frictional means.
Claim 6
Dependent Claim
22 words
The device according to claim 1 wherein said thermoplastic composition is a resin having a melting point of from about 100°-250° C.
Claim 7
Dependent Claim
22 words
The device according to claim 5 wherein said resin is a cross-linked copolymer having a melting point of from about 105°-120° C.
Claim 8
Dependent Claim
17 words
The device according to claim 6 wherein said resin is a copolymer derived from styrene and acrylonitrile.
Claim 9
Dependent Claim
25 words
The device according to claim 1 wherein said projection extends upwardly from the base of said cavity for about half the distance to said orifice.
Claim 10
Independent Claim
169 words
A device for terminating fluid flow in a temperature-activated sprinkler head comprised of a water conduit, a bifurcated flange, circular housing, baffle plate and cut-off valve which comprises: (1) a cylindrical hollow body having at one end a contoured orifice for receiving a bifurcated flange of generally circular configuration said body consisting essentially of a thermoplastic composition which melts at sprinkler-activating temperatures; (2) a cavity formed by the inner sidewalls of said body which extends downwardly from said orifice and terminate in a flat laterally extending base so as to form a recess area for receiveing said bifurcated flange, housing, baffle plate and valve assembly, said sidewalls including a series of holes which provide a release means for the escape of water entrapped within said cavity; (3) a circular projection centrally disposed within said cavity and extending upwardly from said base to provide a support surface upon which is secured a flat tubular seat for receiving said baffle plate; and (4) apertures within said body for engaging said flange.
Claim 11
Independent Claim
169 words
A device for terminating fluid flow in a temperature-activated sprinkler head comprised of a water conduit, a bifurcated flange, circular housing, baffle plate and cut-off valve which comprises: (1) a cylindrical hollow body having at one end a contoured orifice for receiving a bifurcated flange of generally circular configuration said body consisting essentially of a thermoplastic composition which melts at sprinkler-activating temperatures; (2) a cavity formed by the inner sidewalls of said body which extends downwardly from said orifice and terminate in a flat laterally extending base so as to form a recess area for receiveing said bifurcated flange, housing, baffle plate and valve assembly, said sidewalls including a series of holes which provide a release means for the escape of water entrapped within said cavity; (3) a circular projection centrally disposed within said cavity and extending upwardly from said base to provide a support surface upon which is secured a flat tubular seat for receiving said baffle plate; and (4) apertures within said body for engaging said flange.
References Cited (Backward Citations)
US4676320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-15 | 1992-11-14 | 1993-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-15 | 1996-11-14 | 1997-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-15 | 2000-11-14 | 2001-05-16 | $7700.00 | Window Closed / Lapsed |