US3845887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressurized aerosol dispenser valve and gasket
Assignee: Precision Valve Corp
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Filing: 1972-12-13
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Granted: 1974-11-05
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Expires: 1992-12-13
Abstract
Abstract The resilient annular sealing gasket for a valve of a pressurized aerosol dispenser is formed with a polygonal periphery to provide a plurality of pressure filling passages within the valve mounting cup pedestal and exterior to the valve housing for more rapid filling of the dispenser with propellant when the valve is in place and for more economical utilization of the elastomeric material from which the sealing gaskets are manufactured.
Inventors
- 👤 H Meuresch
- 👤 F Zimmerhackel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:27
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/42; B65D83/425
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
164 words
A pressurized dispenser carrying a valve capable of normal use as a discharge valve and of additional use as a propellant charging valve, said valve comprising a valve housing having an upper rim, a valve body within said valve housing and having a valve stem, and an apertured sealing gasket which surrounds the valve stem which gasket is clamped and forms a seal between the upper rim of the valve housing and an adjacent part of the dispenser in which the valve is mounted, said gasket having a non-circular periphery which everywhere extends radially beyond the upper rim of the valve housing to provide one or more marginal zones having reduced sealing engagement with said adjacent part of the dispenser such that when charging the dispenser with propellant each of said marginal zones is deformed and removed from its sealing relation with the said adjacent part of the dispenser to provide a propellant inlet passage leading to the dispenser externally of the valve housing.
Claim 2
Dependent Claim
164 words
A pressurized dispenser carrying a valve capable of normal use as a discharge valve and of additional use as a propellant charging valve, said valve comprising a valve housing having an upper rim, a valve body within said valve housing and having a valve stem, and an apertured sealing gasket which surrounds the valve stem which gasket is clamped and forms a seal between the upper rim of the valve housing and an adjacent part of the dispenser in which the valve is mounted, said gasket having a non-circular periphery which everywhere extends radially beyond the upper rim of the valve housing to provide one or more marginal zones having reduced sealing engagement with said adjacent part of the dispenser such that when charging the dispenser with propellant each of said marginal zones is deformed and removed from its sealing relation with the said adjacent part of the dispenser to provide a propellant inlet passage leading to the dispenser externally of the valve housing.
Claim 3
Dependent Claim
35 words
The improvement of claim 1 wherein the outer periphery of the valve gasket is at least partially defined by chords of the circle defined by the cylindrical wall of the valve mounting cup pedestal portion.
Claim 4
Dependent Claim
15 words
The improvement of claim 1 wherein the outer periphery of the valve gasket is polygonal.
Claim 5
Dependent Claim
62 words
A dispenser according to claim 1, wherein the outer periphery of the sealing gasket has a generally polygonal shape such that each side constitutes a chord or secant of the circle defined by the inner peripheral wall of a cylindrical valve mounting cup pedestal portion of the dispenser, thereby providing gaps between the periphery of the sealing gasket and said peripheral wall.
Claim 6
Dependent Claim
15 words
A dispenser according to claim 4, wherein said chords are arranged in oppositely disposed pairs.
Claim 7
Dependent Claim
155 words
In a pressurized aerosol dispenser including a container having a dispensing valve unit mounted in a cylindrical valve mounting pedestal portion of the container and a discharge conduit extending through an aperture in an end wall of the pedestal portion, the valve unit including a movable valve member within a valve housing having an annular upper rim and a valve sealing gasket having a central aperture encompassing the discharge conduit, said gasket being clamped between said upper rim and said end wall; the improvement which comprises a non-circular configuration of the outer periphery of the gasket, the radius of a circle circumscribing the greatest radial extent of the gasket periphery being at least as large as the radius of the interior of said cylindrical valve mounting pedestal portion, the radius of a circle circumscribing the least radial extent of the gasket periphery being larger than the radius of the clamping rim of the valve housing.
Claim 8
Dependent Claim
155 words
In a pressurized aerosol dispenser including a container having a dispensing valve unit mounted in a cylindrical valve mounting pedestal portion of the container and a discharge conduit extending through an aperture in an end wall of the pedestal portion, the valve unit including a movable valve member within a valve housing having an annular upper rim and a valve sealing gasket having a central aperture encompassing the discharge conduit, said gasket being clamped between said upper rim and said end wall; the improvement which comprises a non-circular configuration of the outer periphery of the gasket, the radius of a circle circumscribing the greatest radial extent of the gasket periphery being at least as large as the radius of the interior of said cylindrical valve mounting pedestal portion, the radius of a circle circumscribing the least radial extent of the gasket periphery being larger than the radius of the clamping rim of the valve housing.
References Cited (Backward Citations)
US2755973A
Cited
US3036743A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |