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US3593801A Expired / Lapsed US ⏱️ 0.0 years remaining

Fluid-actuated fire extinguisher

Assignee: Individual
•
Filing: 1969-11-26
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Granted: 1971-07-20
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Expires: 1989-11-26
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Abstract

Abstract A portable automatic fire extinguisher having a tubular member mounted exteriorly of the extinguisher housing and containing a fluid that expands significantly in response to an abnormal ambient temperature condition. A bellows is surrounded by the fluid and is displaced during fluid expansion. A push rod is connected to the bellows at a first end of the rod while the opposite end mounts a valve. When the bellows is displaced, the push rod is similarly moved thus causing the valve to open and free a stored reagent for mixing with a second reagent which results in the formation of a fire-extinguishing liquid. A discharge tube is disposed in the extinguisher housing and has a nozzle end extending outwardly from the housing so that the extinguishing fluid can be discharged omnidirectionally.

Inventors

  • 👤 Joseph S De Palma

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 20:05
CPC Classifications
A; A62; A62C; A62C13/00; A62C13/003

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 135 words
A temperature-responsive valve assembly comprising a support, means mounted to the support for containing a fluid that expands significantly in response to an abnormal ambient temperature change, detection means being exposed to the fluid for undergoing displacement in response to significant fluid expansion, a valve member normally residing in a first position relative to a mating valve seat, and means connecting the detection means to the valve member for causing the member to move to a second position relative to the valve seat when displacement of the detection means occurs, a tubular member mounted to the support and surrounding the connection means, the member being adapted to store a material therein, an end of the member serving as the valve seat through which the material exits in response to valve displacement to the second position.
Claim 2
Dependent Claim 135 words
A temperature-responsive valve assembly comprising a support, means mounted to the support for containing a fluid that expands significantly in response to an abnormal ambient temperature change, detection means being exposed to the fluid for undergoing displacement in response to significant fluid expansion, a valve member normally residing in a first position relative to a mating valve seat, and means connecting the detection means to the valve member for causing the member to move to a second position relative to the valve seat when displacement of the detection means occurs, a tubular member mounted to the support and surrounding the connection means, the member being adapted to store a material therein, an end of the member serving as the valve seat through which the material exits in response to valve displacement to the second position.
Claim 3
Dependent Claim 35 words
The structure set forth in claim 1 wherein the valve member has an upturned annular flange to form a pocket for engaging the valve seat end of the tubular member and creating a seal therewith.
Claim 4
Dependent Claim 177 words
A temperature-responsive valve assembly comprising a support, means mounted to the support for containing a fluid that expands significantly in response to an abnormal ambient temperature change, detection means being exposed to the fluid for undergoing displacement in response to significant fluid expansion, a valve member normally residing in a first position relative to a mating valve seat, and means connecting the detection means to the valve member for causing the member to move to a second position relative to the valve seat when displacement of the detection means occurs, the detection means comprising a bellows being collapsible in response to expansion of the surrounding fluid, the connection means being a push rod mounting the valve on a first end thereof and engaging the bellows at a second end, the valve assembly being fitted with a tubular member mounted to the support and surrounding the rod, the member being adapted to store material therein, a free end of the member being contiguous with the first rod end and providing the valve seat through which the material exits.
Claim 5
Dependent Claim 177 words
A temperature-responsive valve assembly comprising a support, means mounted to the support for containing a fluid that expands significantly in response to an abnormal ambient temperature change, detection means being exposed to the fluid for undergoing displacement in response to significant fluid expansion, a valve member normally residing in a first position relative to a mating valve seat, and means connecting the detection means to the valve member for causing the member to move to a second position relative to the valve seat when displacement of the detection means occurs, the detection means comprising a bellows being collapsible in response to expansion of the surrounding fluid, the connection means being a push rod mounting the valve on a first end thereof and engaging the bellows at a second end, the valve assembly being fitted with a tubular member mounted to the support and surrounding the rod, the member being adapted to store material therein, a free end of the member being contiguous with the first rod end and providing the valve seat through which the material exits.
Claim 6
Dependent Claim 88 words
In a self-actuated fire extinguisher utilizing the valve assembly of claim 3 together with a tank capped by the support, the tubular member extending into the tank, the discharge tube having a discharge end facing outwardly from the support, the main body portion of the tube being mounted to the support and extending into the tank which stores a reagent, whereby said passage of stored material from the tubular member results in mixing with the reagent to generate a pressurized medium which becomes discharged through the discharge tube.
Claim 7
Dependent Claim 149 words
A temperature-responsive valve assembly comprising a support, means mounted to the support for containing a fluid that expands significantly in response to an abnormal ambient temperature change, detection means being exposed to the fluid for undergoing displacement in response to significant fluid expansion, a valve member normally residing in a first position relative to a mating valve seat, and means connecting the detection means to the valve member for causing the member to move to a second position relative to the valve seat when displacement of the detection means occurs, a tank for mounting the assembly support, the tank being adapted to store a first reagent, and a container disposed in the tank for storing a second reagent, the container having an outlet port controlled by the valve assembly for allowing the reagents to mix when the valve assembly moves to the second position thereby producing a fire-extinguishing fluid.
Claim 8
Dependent Claim 149 words
A temperature-responsive valve assembly comprising a support, means mounted to the support for containing a fluid that expands significantly in response to an abnormal ambient temperature change, detection means being exposed to the fluid for undergoing displacement in response to significant fluid expansion, a valve member normally residing in a first position relative to a mating valve seat, and means connecting the detection means to the valve member for causing the member to move to a second position relative to the valve seat when displacement of the detection means occurs, a tank for mounting the assembly support, the tank being adapted to store a first reagent, and a container disposed in the tank for storing a second reagent, the container having an outlet port controlled by the valve assembly for allowing the reagents to mix when the valve assembly moves to the second position thereby producing a fire-extinguishing fluid.

References Cited (Backward Citations)

US2497286A Cited
US3464497A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-07-19 1975-01-18 1975-07-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-07-19 1979-01-18 1979-07-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-07-19 1983-01-18 1983-07-20 $7700.00 Window Closed / Lapsed

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