Patent US4187485A successfully refreshed from Google Patents.
Patent US3704725A successfully refreshed from Google Patents.
US3704725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure propellant dispensing valve
Assignee: Novartis Corp
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Filing: 1971-01-05
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Granted: 1972-12-05
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Expires: 1991-01-05
Abstract
Abstract A body member has an inner flange, an outer flange and a central opening therethrough. A hollow valve stem has a longitudinal channel terminating in radial openings and is positioned within the central opening. An inner flange of a retaining ring seals a flexible annular gasket against the inner flange of the body member. The inner periphery of the gasket obturates the radial openings. An outer flange of the retaining ring is positioned against the outer flange of the body member. The body member and the retaining ring are held together between a flange opening and a crimped portion of a propellant cartridge.
Inventors
- 👤 Jean Marand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:12
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/60; Y; Y10; Y10T; Y10T137/00; Y10T137/794; Y10T137/8122
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
160 words
A high pressure propellant dispensing valve for use in a propellant cartridge having an inwardly crimped portion and a flanged opening therein, said valve comprising an annular body member having a central opening therein and positioned between said flange and said crimped portion of said cartridge; a hollow valve stem having a flow path therethrough and positioned within said central opening; a flexible annular gasket having an inner periphery obturating said flow path; and a retaining ring positioned to seal said gasket against said body member; said body member further having an inner annular flange and an outer annular flange, and said retaining ring having an inner flange and an outer flange; said gasket being sealingly held against said inner annular flange of said body member by said inner flange of said retaining ring; and said outer flange of said retaining ring being held against said outer annular flange of said body member by said crimped portion of said cartridge.
Claim 2
Dependent Claim
160 words
A high pressure propellant dispensing valve for use in a propellant cartridge having an inwardly crimped portion and a flanged opening therein, said valve comprising an annular body member having a central opening therein and positioned between said flange and said crimped portion of said cartridge; a hollow valve stem having a flow path therethrough and positioned within said central opening; a flexible annular gasket having an inner periphery obturating said flow path; and a retaining ring positioned to seal said gasket against said body member; said body member further having an inner annular flange and an outer annular flange, and said retaining ring having an inner flange and an outer flange; said gasket being sealingly held against said inner annular flange of said body member by said inner flange of said retaining ring; and said outer flange of said retaining ring being held against said outer annular flange of said body member by said crimped portion of said cartridge.
Claim 3
Dependent Claim
29 words
A valve as claimed in claim 1, further comprising an annular sealing gasket positioned between said outer flange of said retaining ring and said crimped portion of said cartridge.
Claim 4
Dependent Claim
25 words
A valve as claimed in claim 1, further comprising a dip tube attached to said retaining ring and selectively in communication with said flow path.
Claim 5
Dependent Claim
24 words
A valve as claimed in claim 1 further comprising a filter positioned within said retaining ring to filter propellant flowing through said flow path.
Claim 6
Dependent Claim
118 words
A high pressure propellant dispensing valve for use in a propellant cartridge having an inwardly crimped portion and a flanged opening therein, said valve comprising an annular body member having a central opening therein and positioned between said flange and said crimped portion of said cartridge; a hollow valve stem having a flow path therethrough and positioned within said central opening; a flexible annular gasket having an inner periphery obturating said flow path; a retaining ring positioned to seal said gasket against said body member; said body member further having a downwardly depending flange surrounding said central opening; and a spring positioned within said downwardly depending flange and urging said hollow valve stem out of said central opening.
Claim 7
Dependent Claim
118 words
A high pressure propellant dispensing valve for use in a propellant cartridge having an inwardly crimped portion and a flanged opening therein, said valve comprising an annular body member having a central opening therein and positioned between said flange and said crimped portion of said cartridge; a hollow valve stem having a flow path therethrough and positioned within said central opening; a flexible annular gasket having an inner periphery obturating said flow path; a retaining ring positioned to seal said gasket against said body member; said body member further having a downwardly depending flange surrounding said central opening; and a spring positioned within said downwardly depending flange and urging said hollow valve stem out of said central opening.
References Cited (Backward Citations)
US2815889A
Cited
US2900114A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |