US4343364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sprinkler head construction
Assignee: GLOBE FIRE EQUIPMENT COMPANY A CORP OF MI
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Filing: 1979-07-06
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Granted: 1982-08-10
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Expires: 1999-07-06
Abstract
Abstract A fire extinguisher sprinkler head construction has a fitting adapted to be coupled to a water line and having a passage therein through which water may flow and impinge upon a deflector. The water passage normally is sealed by a closure and a collapsible strut, the latter including a eutectic member which liquifies upon reaching a predetermined temperature. The eutectic member is sandwiched between a pair of thermally insulating members, also forming part of the strut, and is engaged by a thermally conductive member which functions as a heat collector.
Inventors
- 👤 Hermann R. Glinecke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:49
CPC Classifications
A; A62; A62C; A62C37/00; A62C37/08; A62C37/10; A62C37/11; A62C37/12; F; F16; F16K; F16K17/00; F16K17/36; F16K17/38; F16K17/383
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
110 words
In a sprinkler head construction having a coupling adapted to be mounted on a fluid line and having a passage therein through which fluid may flow, a removable closure member normally sealing said passage, a frame carried by said coupling and having a portion overlying said closure member, and a strut assembly interposed between said frame portion and said closure member and normally maintaining the latter in sealing relation with said passage, the improvement wherein said strut assembly comprises a eutectic member sandwiched between a pair of elongate, thermal insulators extending in longitudinal prolongation of one another, said eutectic member and said insulators being encircled by a thermally conductive member.
Claim 2
Dependent Claim
110 words
In a sprinkler head construction having a coupling adapted to be mounted on a fluid line and having a passage therein through which fluid may flow, a removable closure member normally sealing said passage, a frame carried by said coupling and having a portion overlying said closure member, and a strut assembly interposed between said frame portion and said closure member and normally maintaining the latter in sealing relation with said passage, the improvement wherein said strut assembly comprises a eutectic member sandwiched between a pair of elongate, thermal insulators extending in longitudinal prolongation of one another, said eutectic member and said insulators being encircled by a thermally conductive member.
Claim 3
Dependent Claim
18 words
A construction according to claim 1 wherein said thermally coductive member and said eutectic member are in engagement.
Claim 4
Dependent Claim
18 words
A construction according to claim 1 wherein said thermally conductive member is finned to increase its surface area.
Claim 5
Dependent Claim
24 words
A construction according to claim 1 including a second thermally conductive member interposed between said eutectic member and at least one of said insulators.
Claim 6
Dependent Claim
19 words
A construction according to claim 4 wherein said second conductive member is in engagement with the first-mentioned conductive member.
Claim 7
Dependent Claim
29 words
A construction according to claim 1 including spring means acting on said strut assembly and biasing the latter to move from between said frame portion and said closure member.
Claim 8
Dependent Claim
29 words
A construction according to claim 6 including means reacting between said strut assembly, said closure member, and said frame portion and normally overcoming the bias of said spring means.
Claim 9
Dependent Claim
28 words
A construction according to claim 1 wherein the relative sizes of said conductive member and at least one of said insulators are such as to provide clearance therebetween.
Claim 10
Dependent Claim
18 words
A construction according to claim 1 wherein said closure member comprises a plug removably fitted into said passage.
Claim 11
Dependent Claim
16 words
A construction according to claim 1 wherein said closure member comprises a plate overlying said passage.
Claim 12
Dependent Claim
17 words
A construction according to claim 10 wherein said plate has a tongue extending from one side thereof.
Claim 13
Dependent Claim
15 words
A construction according to claim 1 wherein said frame portion comprises a substantially circular plate.
Claim 14
Dependent Claim
48 words
A construction according to claim 1 wherein said frame includes a pair of spaced apart legs extending from said frame portion in a direction toward said coupling, each of said legs terminating in a mounting foot offset from said leg and extending toward the other of said legs.
Claim 15
Dependent Claim
19 words
A construction according to claim 13 wherein each mounting foot is accomodated in a recess formed in said coupling.
Claim 16
Dependent Claim
60 words
A strut construction for use in a sprinkler head comprising a pair of elongate members formed of thermally insulating material extending in axial prolongation of one another and spaced apart by a gap; a fusible member formed of eutectic material occupying said gap; and a sleeve of thermally conductive material encircling said pair of elongate members and spanning said gap.
Claim 17
Dependent Claim
60 words
A strut construction for use in a sprinkler head comprising a pair of elongate members formed of thermally insulating material extending in axial prolongation of one another and spaced apart by a gap; a fusible member formed of eutectic material occupying said gap; and a sleeve of thermally conductive material encircling said pair of elongate members and spanning said gap.
Claim 18
Dependent Claim
21 words
A construction according to claim 15 wherein one end of each of said pair of elongate members protrudes beyond said sleeve.
Claim 19
Dependent Claim
20 words
A construction according to claim 16 wherein the protruding end of each of said pair of elongate members is rounded.
Claim 20
Dependent Claim
36 words
A construction according to claim 15 including a thermally conductive member accommodated in said sleeve and interposed between one of said pair of elongate members and said eutectic member and being in engagement with the latter.
Claim 21
Dependent Claim
17 words
A construction according to claim 18 wherein said thermally conductive member is in engagement with said sleeve.
Claim 22
Dependent Claim
43 words
A construction according to claim 15 wherein said eutectic member liquifies at a predetermined temperature, and wherein a selected one of said pair of elongated members and said conductive member is configured to permit liquified eutectic material to flow out of said gap.
Claim 23
Dependent Claim
19 words
A construction according to claim 15 wherein said sleeve has an irregular outer surface to increase the area thereof.
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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) | 1985-08-09 | 1986-02-08 | 1986-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-09 | 1990-02-08 | 1990-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-09 | 1994-02-08 | 1994-08-10 | $7700.00 | Window Closed / Lapsed |