US3720153A - Automatic fire-spread preventer valve for ventilation ducts - Google Patents
Automatic fire-spread preventer valve for ventilation ducts Download PDFInfo
- Publication number
- US3720153A US3720153A US00123783A US3720153DA US3720153A US 3720153 A US3720153 A US 3720153A US 00123783 A US00123783 A US 00123783A US 3720153D A US3720153D A US 3720153DA US 3720153 A US3720153 A US 3720153A
- Authority
- US
- United States
- Prior art keywords
- shutter
- housing
- duct
- seat
- safety device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
- A62C2/12—Hinged dampers
- A62C2/14—Hinged dampers with two or more blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/33—Responding to malfunctions or emergencies to fire, excessive heat or smoke
- F24F11/35—Responding to malfunctions or emergencies to fire, excessive heat or smoke by closing air passages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
- F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
- F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
- F24F2013/144—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means with thermoactuators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/1624—Destructible or deformable element controlled
- Y10T137/1797—Heat destructible or fusible
- Y10T137/1819—Safety cut-off
Definitions
- ABSTRACT A valve device which is intended for preventing the propagation of fire in ventilation ducts or the like. it comprises a valve adapted, in case of abnormal or sufficient temperature increment, to automatically close the duct in which it is mounted.
- the present invention relates to a valve device adapted, in case of sufficient temperature increment, to automatically close a ventilation duct in order to prevent the propagation or spreading of fire therethrough.
- valve devices of this character comprise shutter means retained by a fusible element in a position permitting the passage of air through the ventilation ducts equipped therewith.
- these shutters are caused to close the passages in these ducts either by gravity or by the action of suitable springs.
- These devices utilize a movement of translation or a movement of rotation about a fulcrum of said shutters for producing the desired closing action so that they require compulsorily the use of auxiliary means capable of producing the closing movement of the shutters if their operation is to be independent of gravity.
- the device comprises at least one shutter associated with a seat which, within a range of temperatures having an upper limit, or threshold, is retained by at least one fusible element in a position permitting the passage of an air stream between the shutter and the seat, said shutter, outside said temperature range, being released and caused to engage said seat so as to closethe air passage.
- the shutter is cut from a flexible sheet or plate of heat-resistant material and the fusible element retains this shutter in a state of deformation to provide an air passage between the shutter and the seat through a predetermined temperature range; outside this temperature range, the shutter is released and expands soas to automatically engage the aforesaid seat and thus closes completely the initial air passage.
- FIG. 1 is a longitudinal section showing a first embodiment of the invention
- FIG. 2 is another longitudinal section showing a second embodiment of the invention
- FIG. 3 is a similar longitudinal section showing a third embodiment comprising a pair of shutters.
- FIG. 4 illustrates another embodiment.
- the device illustrated therein comprises a housing 1 of sheet steel, interconnecting two duct sections and having mounted therein in a transverse position a shutter 2 cut from flat spring steel sheet and adapted to be deformed symmetrically in relation to two fastening points 3 of the shutter 2 to said housing 1.
- a seat 4 rigid with the housing 1 is associated with the shutter 2.
- a steel wire 5 having its ends provided with a pair of fusible elements 6 in the form of balls or the like retains the shutter 2 in a state of symmetrical elastic deformation or prestress in relation to the two fastening points
- the pair of fusible elements 6 retain the shutter 2 against its natural expansion, as shown in thick lines in FIG. 1, so that air can flow freely through the housing 1 as shown by the arrows 7, i.e. between the walls of said housing and the shutter 2.
- the resistance of fusible elements 6 decreases and eventually cannot prevent the shutter 2 from expanding thus, the shutter assumes the position shown in dash and dot lines in FIG. 1, so as to engage the seat 4 and close completely the air passage 7.
- the shape and disposal of the seat 4 are such that the shutter 2 can close the air passage 7 without having to expand fully as in the case illustrated in FIG. 1; under these conditions, the sealing action is more efficient, and the shutter 2 can counteract a possible pressure differential develop ing on either side of the shutter moreover, the shape of seat 4 permits of compensating the effect likely to be produced by a moderate residual deformation of the spring steel which, being prestressed during a relatively long period, might be prevented thereby from resuming a strictly flat configuration when allowed to expand.
- the modified device illustrated in FIG. 3 comprises a pair of identical shutters 2a, 2b of spring steel, associated with a corresponding pair of seats 4a, 4b respectively disposed within the same housing '1 interconnecting two aligned duct sections.
- the balls 6 retain the shutters 2a and 2b under the same stress and deformation, in the position shown in thick lines, so that these shutters constitute a substantially streamlined oval obstacle in the fluid flow, as seen in longitudinal section, thus minimizing the drag produced therein, i.e. from one duct section to the other.
- the shutters expand and engage their seats 4a, 4b respectively, thus preventing the passage of air from one duct section to the other; the expanded shutters 2a, 2b (shown in dash and dot lines will then form with the walls of housing 1, a fluid-tight chamber 8 constituting an efficient heat insulation between the two duct sections interconnected by said housing 1.
- the seats may be either of the type shown in FIG. 1 or of the type shown in FIG. 2.
- the shutter 2 is secured along one edge to a fastening point 3 on the inner wall of housing 1, which consists of a frame-like seat 4; the shutter 2, being retained laterally against the inner wall of housing 1, as shown, may be of the twin type as shown in dash and dot lines in the lefthand portion of the figure.
- the device according to this invention is adapted to be used notably in case it is desired to prevent a ventilation or air-conditioning duct connected to several different rooms from allowing a fire to spread from one room to another.
- a thermal safety device adapted, in case of abnormal and sufficient increment in the temperature in a ventilation or air-conditioning duct, to automatically close said duct and thus prevent the propagation of tire therealong, which comprises a housing adapted to be inserted between two duct sections, a shutter of resilient flexible flat spring-steel material mounted in said housing and, having a free edge portion, said shutter being adapted to flex between an open position allowing flow through said housing and a closed position preventing flow through said housing, a seat in said housing and adapted to be engaged in face-to-face relation by the free edge portion of said shutterwith the latter in closed position, a wire extending through said shutter, and a fusible element on said wire in a position adapted to retain said shutter in its open position by prestressing and bending said shutter whereby, in case of abnormal and sufficient temperature increment in said duct, said fusible element will melt and release said shutter and said edge portion will move into engagement with said seat.
- Safety device as set forth in claim 1, comprising a second fusible element and means holding said shutter on said housing by two fastening points wherein said shutter in closed position extends transversely in said housing, said shutter being retained in its open position by said fusible elements symmetrically in relation to a plane containing said two fastening points.
- Safety device as set forth in claim 1, wherein said seat is so disposed in said housing that said shutter edges can engage said seat before expanding completely.
- said fusible elements consist of a pair of balls of a material adapted to melt at said predetermined temperature and each secured to one end of said steel wire.
- Safety device as set forth in claim 2, wherein said shutter comprises two elements secured to said housing at opposite ends thereof and adapted, in their closed position, to constitute a relatively streamlined oval obstacle in the housing, said shutters being adapted, in their expanded condition, to form a fluid-tight chamber with the walls of said housing.
- Safety device as set forth in claim 6, wherein said seat comprises a frame-like member secured internally to said housing.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Air-Flow Control Members (AREA)
Abstract
A valve device is provided which is intended for preventing the propagation of fire in ventilation ducts or the like. It comprises a valve adapted, in case of abnormal or sufficient temperature increment, to automatically close the duct in which it is mounted.
Description
United States Patent 1 1 Jardinier et al.
1111 3,720,153 1March 13, 1973 AUTOMATIC FIRE-SPREAD PREVENTER VALVE FOR VENTILATION DUCTS Inventors: Pierre Jardinier, Gournay-sur- Marne; Jack Simonnot, Lesigny, both of France Societe dEtudes et de Recherches de Ventilation et dAeraulique, Villiers, sur Marne, France Filed: March 12, 1971 Appl. No; 123,783
Foreign Application Priority Data Assignee:
Mar. 13,1970 France ..700900'1 Us. c1. ..98/86, 49 7, 137/75 Int. Cl. ..Fl6k 13/00, Fl6k 17/40 Field of Search ..49/1, 3, 7, 8, 379; 98/1, 86; 126/2875; 137/72, 73, 74, 75, 76, 77; 160/1, 3; 251/66 [56] References Cited UNITED STATES PATENTS 3,495,606 2/1970 Phillips ..137/75 3,076,469 2/1963 Averill ..137/74 Primary Examiner-Meyer Perlin Assistant ExaminerP. D. Ferguson Attorney-Waters, Roditi, Schwartz & Nissen [57] ABSTRACT A valve device is provided which is intended for preventing the propagation of fire in ventilation ducts or the like. it comprises a valve adapted, in case of abnormal or sufficient temperature increment, to automatically close the duct in which it is mounted.
7 Claims, 4 Drawing Figures AUTOMATIC FIRE-SPREADIZREVENTER VALVE FOR VENTILATION DUCTS l. FIELD OF THE INVENTION The present invention relates to a valve device adapted, in case of sufficient temperature increment, to automatically close a ventilation duct in order to prevent the propagation or spreading of fire therethrough.
2. DESCRIPTION OF THE PRIOR ART As a rule, known valve devices of this character comprise shutter means retained by a fusible element in a position permitting the passage of air through the ventilation ducts equipped therewith. When the temperature increases sufficiently to reduce the resistance of the fusible element,- these shutters are caused to close the passages in these ducts either by gravity or by the action of suitable springs. These devices utilize a movement of translation or a movement of rotation about a fulcrum of said shutters for producing the desired closing action so that they require compulsorily the use of auxiliary means capable of producing the closing movement of the shutters if their operation is to be independent of gravity.
SUMMARY OF THE INVENTION It is the primary object of the present invention to avoid the inconveniences set forth hereinabove by providing a device adapted, in case of abnormal or sufficient temperature increment, to automatically close the air passage in a ventilation duct without resorting to the action of gravity or of any other auxiliary means.
The device according to this invention comprises at least one shutter associated with a seat which, within a range of temperatures having an upper limit, or threshold, is retained by at least one fusible element in a position permitting the passage of an air stream between the shutter and the seat, said shutter, outside said temperature range, being released and caused to engage said seat so as to closethe air passage.
According to this invention, the shutter is cut from a flexible sheet or plate of heat-resistant material and the fusible element retains this shutter in a state of deformation to provide an air passage between the shutter and the seat through a predetermined temperature range; outside this temperature range, the shutter is released and expands soas to automatically engage the aforesaid seat and thus closes completely the initial air passage.
BRIEF DESCRIPTION OF THE DRAWINGS Other features and advantages of this invention will appear as the following description proceeds with reference to the diagrammatic drawings attached hereto, given by way of example only and illustrating a few forms of embodiment thereof. In the drawings:
FIG. 1 is a longitudinal section showing a first embodiment of the invention;
FIG. 2 is another longitudinal section showing a second embodiment of the invention;
FIG. 3 is a similar longitudinal section showing a third embodiment comprising a pair of shutters; and
FIG. 4 illustrates another embodiment.
DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring first to FIG. 1, the device illustrated therein comprises a housing 1 of sheet steel, interconnecting two duct sections and having mounted therein in a transverse position a shutter 2 cut from flat spring steel sheet and adapted to be deformed symmetrically in relation to two fastening points 3 of the shutter 2 to said housing 1. A seat 4 rigid with the housing 1 is associated with the shutter 2.
A steel wire 5 having its ends provided with a pair of fusible elements 6 in the form of balls or the like retains the shutter 2 in a state of symmetrical elastic deformation or prestress in relation to the two fastening points This device operates as follows.
As long as the temperature remains below a predetermined threshold or upper limit T, the pair of fusible elements 6 retain the shutter 2 against its natural expansion, as shown in thick lines in FIG. 1, so that air can flow freely through the housing 1 as shown by the arrows 7, i.e. between the walls of said housing and the shutter 2. When the temperature rises above said limit value T, the resistance of fusible elements 6 decreases and eventually cannot prevent the shutter 2 from expanding thus, the shutter assumes the position shown in dash and dot lines in FIG. 1, so as to engage the seat 4 and close completely the air passage 7.
In the embodiment illustrated in FIG. 2, the shape and disposal of the seat 4 are such that the shutter 2 can close the air passage 7 without having to expand fully as in the case illustrated in FIG. 1; under these conditions, the sealing action is more efficient, and the shutter 2 can counteract a possible pressure differential develop ing on either side of the shutter moreover, the shape of seat 4 permits of compensating the effect likely to be produced by a moderate residual deformation of the spring steel which, being prestressed during a relatively long period, might be prevented thereby from resuming a strictly flat configuration when allowed to expand.
The modified device illustrated in FIG. 3 comprises a pair of identical shutters 2a, 2b of spring steel, associated with a corresponding pair of seats 4a, 4b respectively disposed within the same housing '1 interconnecting two aligned duct sections. The shutters 2a,
2b and relevant seats 40, 4b are disposed symmetrically in relation to the rectilinear steel wire 5 having its ends provided with the fusible elements or balls 6.
Below the predetermined temperature threshold, the balls 6 retain the shutters 2a and 2b under the same stress and deformation, in the position shown in thick lines, so that these shutters constitute a substantially streamlined oval obstacle in the fluid flow, as seen in longitudinal section, thus minimizing the drag produced therein, i.e. from one duct section to the other. When the temperature rises to a value beyond said threshold, the shutters expand and engage their seats 4a, 4b respectively, thus preventing the passage of air from one duct section to the other; the expanded shutters 2a, 2b (shown in dash and dot lines will then form with the walls of housing 1, a fluid-tight chamber 8 constituting an efficient heat insulation between the two duct sections interconnected by said housing 1.
It may be noted that, in this specific embodiment comprising a double shutter, the seats may be either of the type shown in FIG. 1 or of the type shown in FIG. 2.
Finally, in the embodiment illustrated in FIG. 4, the shutter 2 is secured along one edge to a fastening point 3 on the inner wall of housing 1, which consists of a frame-like seat 4; the shutter 2, being retained laterally against the inner wall of housing 1, as shown, may be of the twin type as shown in dash and dot lines in the lefthand portion of the figure.
The device according to this invention is adapted to be used notably in case it is desired to prevent a ventilation or air-conditioning duct connected to several different rooms from allowing a fire to spread from one room to another.
Although a few embodiments of the present invention have been described and illustrated herein, it will readily occur to those conversant with the art that various modifications and variations may be brought thereto without departing from the spirit and scope of the invention as set forth in the appended claims.
What is claimed as new is:
l. A thermal safety device adapted, in case of abnormal and sufficient increment in the temperature in a ventilation or air-conditioning duct, to automatically close said duct and thus prevent the propagation of tire therealong, which comprises a housing adapted to be inserted between two duct sections, a shutter of resilient flexible flat spring-steel material mounted in said housing and, having a free edge portion, said shutter being adapted to flex between an open position allowing flow through said housing and a closed position preventing flow through said housing, a seat in said housing and adapted to be engaged in face-to-face relation by the free edge portion of said shutterwith the latter in closed position, a wire extending through said shutter, and a fusible element on said wire in a position adapted to retain said shutter in its open position by prestressing and bending said shutter whereby, in case of abnormal and sufficient temperature increment in said duct, said fusible element will melt and release said shutter and said edge portion will move into engagement with said seat.
2. Safety device as set forth in claim 1, comprising a second fusible element and means holding said shutter on said housing by two fastening points wherein said shutter in closed position extends transversely in said housing, said shutter being retained in its open position by said fusible elements symmetrically in relation to a plane containing said two fastening points.
3. Safety device as set forth in claim 1, wherein said seat is so disposed in said housing that said shutter edges can engage said seat before expanding completely.
4. Safety device as set forth in claim 2, wherein said fusible elements consist of a pair of balls of a material adapted to melt at said predetermined temperature and each secured to one end of said steel wire.
5. Safety device as set forth in claim 2, wherein said shutter comprises two elements secured to said housing at opposite ends thereof and adapted, in their closed position, to constitute a relatively streamlined oval obstacle in the housing, said shutters being adapted, in their expanded condition, to form a fluid-tight chamber with the walls of said housing.
6. Safety device as set forth in claim 1, comprlsing means by which said shutter is secured along one edge to said housing and in open position lies substantially flatly along said housing.
7. Safety device as set forth in claim 6, wherein said seat comprises a frame-like member secured internally to said housing.
Claims (7)
1. A thermal safety device adapted, in case of abnormal and sufficient increment in the temperature in a ventilation or airconditioning duct, to automatically close said duct and thus prevent the propagation of fire therealong, which comprises a housing adapted to be inserted between two duct sections, a shutter of resilient flexible flat spring-steel material mounted in said housing and, having a free edge portion, said shutter being adapted to flex between an open position allowing flow through said housing and a closed position preventing flow through said housing, a seat in said housing and adapted to be engaged in face-to-face relation by the free edge portion of said shutter with the latter in closed position, a wire extending through said shutter, and a fusible element on said wire in a position adapted to retain said shutter in its open position by prestressing and bending said shutter whereby, in case of abnormal and sufficient temperature increment in said duct, said fusible element will melt and release said shutter and said edge portion will move into engagement with said seat.
1. A thermal safety device adapted, in case of abnormal and sufficient increment in the temperature in a ventilation or air-conditioning duct, to automatically close said duct and thus prevent the propagation of fire therealong, which comprises a housing adapted to be inserted between two duct sections, a shutter of resilient flexible flat spring-steel material mounted in said housing and, having a free edge portion, said shutter being adapted to flex between an open position allowing flow through said housing and a closed position preventing flow through said housing, a seat in said housing and adapted to be engaged in face-to-face relation by the free edge portion of said shutter with the latter in closed position, a wire extending through said shutter, and a fusible element on said wire in a position adapted to retain said shutter in its open position by prestressing and bending said shutter whereby, in case of abnormal and sufficient temperature increment in said duct, said fusible element will melt and release said shutter and said edge portion will move into engagement with said seat.
2. Safety device as set forth in claim 1, comprising a second fusible element and means holding said shutter on said housing by two fastening points wherein said shutter in closed position extends transversely in said housing, said shutter being retained in its open position by said fusible elements symmetrically in relation to a plane containing said two fastening points.
3. Safety device as set forth in claim 1, wherein said seat is so disposed in said housing that said shutter edges can engage said seat before expanding completely.
4. Safety device as set forth in claim 2, wherein said fusible elements consist of a pair of balls of a material adapted to melt at said predetermined temperature and each secured to one end of said steel wire.
5. Safety device as set forth in claim 2, wherein said shutter comprises two elements secured to said housing at opposite ends thereof and adapted, in their closed position, to constitute a relatively streamlined oval obstacle in the housing, said shutters being adapted, in their expanded condition, to form a fluid-tight chamber with the walls of said housing.
6. Safety device as set forth in claim 1, comprising means by which said shutter is secured along one edge to said housing and in open position lies substantially flatly along said housing.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7009001A FR2082387A5 (en) | 1970-03-13 | 1970-03-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3720153A true US3720153A (en) | 1973-03-13 |
Family
ID=9052202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00123783A Expired - Lifetime US3720153A (en) | 1970-03-13 | 1971-03-12 | Automatic fire-spread preventer valve for ventilation ducts |
Country Status (4)
Country | Link |
---|---|
US (1) | US3720153A (en) |
DE (1) | DE2110643C2 (en) |
FR (1) | FR2082387A5 (en) |
GB (1) | GB1307954A (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4143670A (en) * | 1976-12-13 | 1979-03-13 | Fiber-Dyne, Inc. | Ducting fire protection |
US4143671A (en) * | 1976-11-11 | 1979-03-13 | Fiber-Dyne, Inc. | Ducting fire protection |
US4146048A (en) * | 1977-05-02 | 1979-03-27 | Prefco Productions, Inc. | Fire damper and method of fabrication |
US4263930A (en) * | 1978-04-14 | 1981-04-28 | Prefco Products, Inc. | Diffuser concealable, volume control, heat-responsive, semi-automatic resetting, butterfly damper and operator |
US4295486A (en) * | 1978-04-27 | 1981-10-20 | Prefco Products, Inc. | Low cost, diffuser concealable, volume control, heat responsive, resettable, butterfly damper operator |
US4366830A (en) * | 1980-12-19 | 1983-01-04 | Ruskin Manufacturing Company | Damper assembly |
US4531544A (en) * | 1982-10-20 | 1985-07-30 | Franz Jacobs | Fire flap arrangement |
USRE32362E (en) * | 1977-05-02 | 1987-02-24 | Prefco Products, Inc. | Fire damper and method of fabrication |
US4858517A (en) * | 1988-06-08 | 1989-08-22 | Rick Coker | Fire damper kit |
US5927312A (en) * | 1998-02-27 | 1999-07-27 | Dryden; Paul E. | Method and apparatus for extinguishing combustion within combustible tubing |
US20120329380A1 (en) * | 2011-06-24 | 2012-12-27 | Tai Chang-Hsien | Ventilation System with Controllable Air Input and Output |
US9089727B1 (en) | 2014-01-17 | 2015-07-28 | Gerald Grattan Flood | Fire suppression system for air ducts |
US9416615B2 (en) | 2010-04-20 | 2016-08-16 | Schlumberger Technology Corporation | System and method for improving zonal isolation in a well |
DE102009039265B4 (en) * | 2009-08-28 | 2017-06-29 | Gert Bartholomäus | Closing device for overflow openings with rollable closure element |
US10695598B2 (en) | 2017-08-28 | 2020-06-30 | Justrite Manufacturing Company, Llc | Vented safety cabinet with thermally-actuated damper |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3141160C2 (en) * | 1981-10-16 | 1984-07-12 | Jacobs, Franz, 4194 Bedburg-Hau | "Fire and smoke gas barrier" |
FR2611852B1 (en) * | 1987-03-03 | 1989-05-26 | Aldes Atel Lyon Emboutissage | SYSTEM FOR PLACING A TUBULAR SHAPE ELEMENT WITHIN A CONDUIT |
DE9002778U1 (en) * | 1990-03-09 | 1990-06-28 | "Schako" Metallwarenfabrik Ferdinand Schad KG Zweigniederlassung Kolbingen, 7201 Kolbingen | Fire protection box |
DE4431193A1 (en) * | 1994-09-01 | 1998-10-01 | Bartholomaeus Gmbh | Fire protector for ventilation duct or drain pipe |
DE19701275C2 (en) * | 1997-01-16 | 1999-01-14 | Schako Metallwarenfabrik | Fire damper |
DE29819164U1 (en) | 1998-10-27 | 1999-01-28 | Meltem Lüftungsgeräte GmbH & Co. KG, 82239 Alling | Shut-off device for a ventilation opening and holding element for a shut-off device |
WO2006015422A1 (en) * | 2004-08-09 | 2006-02-16 | Paul Robertson | Fire barriers |
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US3076469A (en) * | 1961-03-29 | 1963-02-05 | Titus Mfg Corp | Fire safety damper units |
US3495606A (en) * | 1965-08-05 | 1970-02-17 | Sterling Radiator Co Inc | Damper valve for ventilating ducts |
Family Cites Families (3)
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DE1249023B (en) * | 1965-07-05 | 1967-08-31 | Dynamit Nobel Aktiengesellschaft, Troisdorf (Bez Köln) | FIRE BARRIER ON WALL PIPES MADE OF THERMOPLASTIC PLASTIC |
DE1559317A1 (en) * | 1965-07-05 | 1969-09-25 | Dynamit Nobel Ag | Device for the automatic closing of ceiling and wall openings in the event of excessive temperatures |
DE1995156U (en) * | 1968-07-06 | 1968-10-24 | Trox Gmbh Geb | FIRE PROTECTION FLAP, IN PARTICULAR FOR INSTALLATION IN VENTILATION DUCTS OF SHIPS. |
-
1970
- 1970-03-13 FR FR7009001A patent/FR2082387A5/fr not_active Expired
-
1971
- 1971-03-05 DE DE2110643A patent/DE2110643C2/en not_active Expired
- 1971-03-12 US US00123783A patent/US3720153A/en not_active Expired - Lifetime
- 1971-04-19 GB GB2355771*A patent/GB1307954A/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3076469A (en) * | 1961-03-29 | 1963-02-05 | Titus Mfg Corp | Fire safety damper units |
US3495606A (en) * | 1965-08-05 | 1970-02-17 | Sterling Radiator Co Inc | Damper valve for ventilating ducts |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4143671A (en) * | 1976-11-11 | 1979-03-13 | Fiber-Dyne, Inc. | Ducting fire protection |
US4143670A (en) * | 1976-12-13 | 1979-03-13 | Fiber-Dyne, Inc. | Ducting fire protection |
US4474167A (en) * | 1977-05-02 | 1984-10-02 | Mccabe Francis J | Latch for a butterfly damper |
US4146048A (en) * | 1977-05-02 | 1979-03-27 | Prefco Productions, Inc. | Fire damper and method of fabrication |
USRE32362E (en) * | 1977-05-02 | 1987-02-24 | Prefco Products, Inc. | Fire damper and method of fabrication |
US4263930A (en) * | 1978-04-14 | 1981-04-28 | Prefco Products, Inc. | Diffuser concealable, volume control, heat-responsive, semi-automatic resetting, butterfly damper and operator |
US4295486A (en) * | 1978-04-27 | 1981-10-20 | Prefco Products, Inc. | Low cost, diffuser concealable, volume control, heat responsive, resettable, butterfly damper operator |
US4366830A (en) * | 1980-12-19 | 1983-01-04 | Ruskin Manufacturing Company | Damper assembly |
US4531544A (en) * | 1982-10-20 | 1985-07-30 | Franz Jacobs | Fire flap arrangement |
US4858517A (en) * | 1988-06-08 | 1989-08-22 | Rick Coker | Fire damper kit |
US5927312A (en) * | 1998-02-27 | 1999-07-27 | Dryden; Paul E. | Method and apparatus for extinguishing combustion within combustible tubing |
WO1999043972A1 (en) * | 1998-02-27 | 1999-09-02 | Dryden Paul E | Method and apparatus for extinguishing combustion within combustible tubing |
DE102009039265B4 (en) * | 2009-08-28 | 2017-06-29 | Gert Bartholomäus | Closing device for overflow openings with rollable closure element |
US9416615B2 (en) | 2010-04-20 | 2016-08-16 | Schlumberger Technology Corporation | System and method for improving zonal isolation in a well |
US20120329380A1 (en) * | 2011-06-24 | 2012-12-27 | Tai Chang-Hsien | Ventilation System with Controllable Air Input and Output |
US9086222B2 (en) * | 2011-06-24 | 2015-07-21 | National Pingtung University Of Science And Technology | Ventilation system with controllable air input and output |
US9089727B1 (en) | 2014-01-17 | 2015-07-28 | Gerald Grattan Flood | Fire suppression system for air ducts |
US10695598B2 (en) | 2017-08-28 | 2020-06-30 | Justrite Manufacturing Company, Llc | Vented safety cabinet with thermally-actuated damper |
US11957942B2 (en) | 2017-08-28 | 2024-04-16 | Justrite Manufacturing Company, L.L.C. | Vented safety cabinet with thermally-actuated damper |
Also Published As
Publication number | Publication date |
---|---|
DE2110643C2 (en) | 1983-01-27 |
GB1307954A (en) | 1973-02-21 |
FR2082387A5 (en) | 1971-12-10 |
DE2110643A1 (en) | 1971-09-30 |
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