Patent US3613795A successfully refreshed from Google Patents.
US3613795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically and/or thermally actuated release link
Assignee: AIR BALANCE Inc
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Filing: 1969-08-13
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Granted: 1971-10-19
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Expires: 1989-08-13
Abstract
Abstract An electrothermal release detent that is equally responsive to either electrical or thermal stimuli which serves to release fire control apparatus such as a fire and/or smoke damper positioned within air-handling ducts or in other portions of building construction to thereby prevent the rapid spread of fire and smoke through the protected area.
Inventors
- 👤 Raymond George Amicone
- 👤 Charles T Davey
- 👤 Warren J Dunning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:21
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/06; A; A62; A62C; A62C2/00; A62C2/06; A62C2/12; A62C2/14; A62C2/16; F; F24; F24F; F24F13/00; F24F13/08; F24F13/10; F24F11/00; F24F11/30; F24F11/32; F24F11/33; F24F11/35; F24F13/14; F24F13/1426; F24F2013/144; F24F2013/146
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
143 words
In a smoke or fire control device to prevent the spread of smoke or fire within a structure, the combination of, A. smoke or fire control means operable from a fist position to a second position; B. a heat-separable detent securing the smoke or fire control means in the said first position; C. heat-generating means associated with the said detent, 1. operation of said heat-generating means being initiated by stimulus generating means, 2. said heat-generating means being capable of generating sufficient heat to separate the said detent; and D. stimulus generating means functioning upon the presence of smoke or fire, 1. said stimulus generating means sending initiating stimuli to the said heat-generating means, whereby the said detent separates upon presence of smoke or fire to thereby permit the smoke or fire control means to operate from the first position to the second position.
Claim 2
Dependent Claim
143 words
In a smoke or fire control device to prevent the spread of smoke or fire within a structure, the combination of, A. smoke or fire control means operable from a fist position to a second position; B. a heat-separable detent securing the smoke or fire control means in the said first position; C. heat-generating means associated with the said detent, 1. operation of said heat-generating means being initiated by stimulus generating means, 2. said heat-generating means being capable of generating sufficient heat to separate the said detent; and D. stimulus generating means functioning upon the presence of smoke or fire, 1. said stimulus generating means sending initiating stimuli to the said heat-generating means, whereby the said detent separates upon presence of smoke or fire to thereby permit the smoke or fire control means to operate from the first position to the second position.
Claim 3
Dependent Claim
27 words
said heat-generating means being capable of generating sufficient heat to separate the said detent; and D. stimulus generating means functioning upon the presence of smoke or fire,
Claim 4
Dependent Claim
27 words
said heat-generating means being capable of generating sufficient heat to separate the said detent; and D. stimulus generating means functioning upon the presence of smoke or fire,
Claim 5
Dependent Claim
15 words
The invention of claim 1 wherein the said heat-generating means are initiated by electrical stimuli.
Claim 6
Dependent Claim
49 words
said structural means being provided with fusible means, a. said fusible means securing said fastening sections together at normal ambient operating temperature, b. the said fusible means melting upon the occurrence of temperature elevated above said normal ambient operating temperature; and B. heat-generating means associated with said fusible means,
Claim 7
Dependent Claim
49 words
said structural means being provided with fusible means, a. said fusible means securing said fastening sections together at normal ambient operating temperature, b. the said fusible means melting upon the occurrence of temperature elevated above said normal ambient operating temperature; and B. heat-generating means associated with said fusible means,
Claim 8
Dependent Claim
55 words
said structural means being provided with fusible means, a. said fusible means being disposed between said fastening sections and securing said fastening sections together at normal ambient operating temperature, b. said fusible means melting upon the occurrence of temperature elevated above said normal ambient operating temperature; and B. heat-generating means associated with said fusible means,
Claim 9
Dependent Claim
55 words
said structural means being provided with fusible means, a. said fusible means being disposed between said fastening sections and securing said fastening sections together at normal ambient operating temperature, b. said fusible means melting upon the occurrence of temperature elevated above said normal ambient operating temperature; and B. heat-generating means associated with said fusible means,
Claim 10
Dependent Claim
22 words
said heat-generating means being capable of generating sufficient heat to melt said fusible means thereby releasing said fastening sections from each other.
Claim 11
Dependent Claim
22 words
said heat-generating means being capable of generating sufficient heat to melt said fusible means thereby releasing said fastening sections from each other.
Claim 12
Dependent Claim
14 words
The invention of claim 1 wherein the said heat-generating means include an electrical transducer.
Claim 13
Dependent Claim
19 words
The invention of claim 1 wherein the said stimulus generating means also function upon the presence of elevated temperatures.
Claim 14
Dependent Claim
34 words
The invention of claim 1 wherein the said heat-separable detent is operably responsive either to heat produced by the said heat-generating means or by elevated temperatures present in the vicinity of the said detent.
Claim 15
Dependent Claim
16 words
The invention of claim 1 wherein the smoke and fire control device is a fire damper.
Claim 16
Dependent Claim
16 words
The invention of claim 1 wherein the smoke and fire control device is a fire door.
Claim 17
Dependent Claim
16 words
The invention of claim 1 wherein the smoke and fire control device is a sprinkler head.
Claim 18
Dependent Claim
18 words
The invention of claim 1 wherein the smoke and fire control device is a compressed gas release valve.
Claim 19
Dependent Claim
11 words
In a heat-responsive detent, the combination of A. separable structural means,
Claim 20
Dependent Claim
11 words
In a heat-responsive detent, the combination of A. separable structural means,
Claim 21
Dependent Claim
15 words
The invention of claim 10 wherein the fastening sections substantially enclose the heat-generating generating means.
Claim 22
Dependent Claim
13 words
The invention of claim 11 wherein the heat-generating means includE an electrical transducer.
Claim 23
Dependent Claim
32 words
The invention of claim 10 wherein the fusible means melt in response either to heat produced by the heat-generating means or to elevated temperatures present in the vicinity of the fastening sections.
Claim 24
Dependent Claim
29 words
The invention of claim 10 wherein the detent has a longitudinal axis between its ends and the semicylindrically formed sections have their cylindrical surfaces aligned with the said axis.
Claim 25
Dependent Claim
29 words
The invention of claim 10 wherein the detent has a longitudinal axis between its ends and the semicylindrically formed sections have their cylindrical surfaces directed transversely of said axis.
Claim 26
Dependent Claim
11 words
In a heat-responsive detent, the combination of A. separable structural means,
Claim 27
Dependent Claim
11 words
In a heat-responsive detent, the combination of A. separable structural means,
Claim 28
Dependent Claim
20 words
The invention of claim 16 wherein said fastening sections have surfaces mating with surfaces of the heat-generating means enclosed thereby.
Claim 29
Dependent Claim
11 words
The invention of claim 17 wherein said fastening sections are similar.
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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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |