US3633676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flush-type sprinkler
Assignee: GRUNAU SPRINKLER MANUFACTURING COMPANY Inc A WIS CORP
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Filing: 1970-04-01
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Granted: 1972-01-11
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Expires: 1990-04-01
Abstract
Abstract A sprinkler is provided mounted flush in a ceiling and has an outer escutcheon plate releasably held in place by heatresponsive elements having a selected release temperature. The escutcheon plate is normally in covering relation to a sprinkler which has a strut containing a heat-responsive element having a different selected release temperature. Heat-sensing fins movable downwardly below the ceiling line upon release of the escutcheon plate contribute to sensitivity.
Inventors
- 👤 Fred A Gloeckler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:31
CPC Classifications
A; A62; A62C; A62C37/00; A62C37/08; A62C37/09; A62C37/10; A62C37/11; A62C37/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
143 words
A sprinkler for mounting in a ceiling comprising a body with a frame normally disposed above the lower face of the ceiling, said body having a fluid supply connection and a discharge bore, a valve plug normally closing said bore, a member slidably mounted with respect to said body and carrying a baffle plate for diverting water discharged from said discharge bore, and means engaged with said member for retaining said valve plug in closed position including first temperature-sensitive means responsive to a predetermined temperature carried by said frame, a cover plate disposed on the lower face of the ceiling in covering relation to said frame, second temperature-sensitive means responsive to a predetermined temperature releasably retaining said cover plate in position, and cover-plate-mounting clips in engagement with said frame, and said second temperature-sensitive means being interposed between said clips and said cover plate.
Claim 2
Dependent Claim
143 words
A sprinkler for mounting in a ceiling comprising a body with a frame normally disposed above the lower face of the ceiling, said body having a fluid supply connection and a discharge bore, a valve plug normally closing said bore, a member slidably mounted with respect to said body and carrying a baffle plate for diverting water discharged from said discharge bore, and means engaged with said member for retaining said valve plug in closed position including first temperature-sensitive means responsive to a predetermined temperature carried by said frame, a cover plate disposed on the lower face of the ceiling in covering relation to said frame, second temperature-sensitive means responsive to a predetermined temperature releasably retaining said cover plate in position, and cover-plate-mounting clips in engagement with said frame, and said second temperature-sensitive means being interposed between said clips and said cover plate.
Claim 3
Dependent Claim
26 words
A sprinkler as defined in claim 1 in which said slidably mounted member has a compression screw engaged therein for retaining said valve plug in position.
Claim 4
Dependent Claim
24 words
A sprinkler as defined in claim 1, in which said second temperature-responsive means is responsive to a lower temperature than the first temperature-responsive means.
Claim 5
Dependent Claim
33 words
A sprinkler as defined in claim 1 in which said means for retaining said valve plug includes an actuator lever pivotally carried by said frame and in engagement with said first temperature-sensitive means.
Claim 6
Dependent Claim
132 words
A sprinkler for mounting in a ceiling comprising a body with a frame normally disposed above the lower face of the ceiling, said body having a fluid supply connection and a discharge bore, a valve plug normally closing said bore, a member slidably mounted with respect to said body and carrying a baffle plate for diverting water discharged from said discharge bore, and means engaged with said member for retaining said valve plug in closed position including first temperature-sensitive means responsive to a predetermined temperature carried by said frame, a cover plate disposed on the lower face of the ceiling in covering relation to said frame, and second temperature-sensitive means responsive to a predetermined temperature releasably retaining said cover plate in position, heat-transmitting members being provided on said first mentioned temperature-sensitive means.
Claim 7
Dependent Claim
132 words
A sprinkler for mounting in a ceiling comprising a body with a frame normally disposed above the lower face of the ceiling, said body having a fluid supply connection and a discharge bore, a valve plug normally closing said bore, a member slidably mounted with respect to said body and carrying a baffle plate for diverting water discharged from said discharge bore, and means engaged with said member for retaining said valve plug in closed position including first temperature-sensitive means responsive to a predetermined temperature carried by said frame, a cover plate disposed on the lower face of the ceiling in covering relation to said frame, and second temperature-sensitive means responsive to a predetermined temperature releasably retaining said cover plate in position, heat-transmitting members being provided on said first mentioned temperature-sensitive means.
Claim 8
Dependent Claim
22 words
A sprinkler as defined in claim 5 in which said heat-transmitting members are releasably held in predetermined positions by said cover plate.
Claim 9
Dependent Claim
22 words
A sprinkler as defined in claim 6 in which said heat-transmitting members are metallic ribbons with pendant free ends in released position.
References Cited (Backward Citations)
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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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |