US3741310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety head arrangement for fire extinguisher
Assignee: Kidde Inc
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Filing: 1971-11-10
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Granted: 1973-06-26
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Expires: 1991-11-10
Abstract
Abstract Apparatus for dispensing a fluid medium under pressure is disclosed, including a container for storing the fluid medium and having a substantially tubular neck defining an opening. A control head is mountable within the opening and is movable relative to the longitudinal axis of the container to an outer position to seal the opening and to an inner position to vent the container. The control head is interlocked with the container by means of a bayonet type connection including a pair of inwardly extending flanges on the container and a pair of outwardly extending flanges on the control head. Inwardly and outwardly extending flanges are provided with mutually engageable abutment surfaces to constrain the control head against movement relative to the container when the control head is in its outer position.
Inventors
- 👤 A Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:37
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/30; F16K1/301; F16K1/303; A; A62; A62C; A62C13/00; A62C13/006
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
189 words
Fluid medium dispensing apparatus comprising: a container for storing the fluid medium under pressure and having a neck portion at one end defining an opening; a control head mountable within said opening and having means thereon for sealing the opening, said control head being movable relative to the container between an upper operational position in which said sealing means seals the opening and a lower venting position; at least first and second mutually engagable flange elements connected respectively to the container and to the control head, each of said elements having an abutment surface engagable with the other to limit upward movement of the control head; a pair of radially inwardly extending substantially vertical stop surfaces formed on said container within said neck, said surfaces facing in opposite directions around the circumference of the opening in said neck; a pair of radially outwardly extending substantially vertical stop surfaces formed on said control head, each of said outwardly extenDing stop surfaces being aligned with a corresponding one of said inwardly extending stop surfaces to constrain rotational movement of said control head when said control head is in said operational position.
Claim 2
Dependent Claim
189 words
Fluid medium dispensing apparatus comprising: a container for storing the fluid medium under pressure and having a neck portion at one end defining an opening; a control head mountable within said opening and having means thereon for sealing the opening, said control head being movable relative to the container between an upper operational position in which said sealing means seals the opening and a lower venting position; at least first and second mutually engagable flange elements connected respectively to the container and to the control head, each of said elements having an abutment surface engagable with the other to limit upward movement of the control head; a pair of radially inwardly extending substantially vertical stop surfaces formed on said container within said neck, said surfaces facing in opposite directions around the circumference of the opening in said neck; a pair of radially outwardly extending substantially vertical stop surfaces formed on said control head, each of said outwardly extenDing stop surfaces being aligned with a corresponding one of said inwardly extending stop surfaces to constrain rotational movement of said control head when said control head is in said operational position.
Claim 3
Dependent Claim
33 words
The apparatus of claim 1 wherein the abutment surface of said first flange element overlies the corresponding abutment surface of said second flange element when the control head is in said operation position.
Claim 4
Dependent Claim
23 words
The apparatus of claim 2 wherein at least one of said inwardly extending stop surfaces is formed as part of said first flange.
Claim 5
Dependent Claim
23 words
The apparatus of claim 3 wherein at least one of said outwardly extending stop surfaces is formed as part of said second flange.
Claim 6
Dependent Claim
52 words
The apparatus of claim 4 wherein one of said flange elements comprises a promontory, the stop surface of said one flange being formed on said promontory and having a portion aligned with the corresponding stop surface of the other of said flange elements when the control head is in said operating position.
Claim 7
Dependent Claim
15 words
The apparatus of claim 5 wherein said promotory is formed on said second flange member.
Claim 8
Dependent Claim
28 words
The apparatus of claim 6 wherein said container comprises a pair of said first flange elements protruding from substantially diametrically opposite positions along the periphery of said neck.
Claim 9
Dependent Claim
30 words
The apparatus of claim 7 wherein said control head comprises a pair of said second flange elements protruding from substantially diametrically opposite positions along the periphery of said control head.
Claim 10
Dependent Claim
29 words
The apparatus of claim 8 wherein each of said flange elements comprises a substantially sector shaped member having a substantially flat surface area forming one of said abutment surfaces.
Claim 11
Dependent Claim
19 words
The apparatus of claim 9 wherein the sector angle of each of said flange elements is substantially the same.
Claim 12
Dependent Claim
72 words
The apparatus of claim 10 wherein each element of said pair of second flange elements comprises one of said promontories located adjacent one end and forming an integral part thereof, a portion of the stop surfaces of each of said promontories being adapted to align with a corresponding shoulder portion forming one end of each element of said pair of first flange elements when said control head is in said operational position.
Claim 13
Dependent Claim
23 words
The apparatus of claim 11 wherein said shoulder portions face in substantially opposite directions around the circumference of the opening in said neck.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |