Patent US4015752A successfully refreshed from Google Patents.
US4015752A
Expired / Lapsed
US
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Rapid charging valve for a pressurized dispenser
Assignee: Precision Valve Corp
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Filing: 1976-01-27
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Granted: 1977-04-05
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Expires: 1996-01-27
Abstract
Abstract A valve for a pressurized dispenser which includes within a mounting cup, a valve housing and an annular gasket for sealing a discharge passage of a movable valve stem, the gasket having peripheral edge portions which do not extend to contact the valve cup surrounding wall, and a marginal portion between its peripheral edge and the portion clamped between the mounting cup and the valve housing, and which incorporates a clearance space within the cup and beyond the periphery of the gasket to accommodate the marginal portion of the gasket when stretched during the filling of the dispenser so that a flow path is provided to the outside of the housing. The gasket is preferably polygonal in shape, for example hexagonal.
Inventors
- 👤 Herbert Meuresch
- 👤 Tilo Patenge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:12
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/42; B65D83/425
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
180 words
In a valve for a pressurized dispenser, said valve having a mounting cup, a valve housing immovable relative thereto and a gasket for sealing a discharge passage, the gasket being clamped between a rim of said housing and an adjacent wall of the mounting cup, said mounting cap having a pedestal portion comprising an end wall and a circumferential wall and a filling aperture in the end wall radially outward of the discharge passage and only inward of the clamping rim, the improvement which comprises said gasket having an annular clamped region, a peripheral edge having portions which extend to contact a surrounding wall separated by other portions which do not contact the surrounding wall, and a marginal portion between the peripheral edge and the clamped region, and a clearance space below the marginal portion of the gasket to accommodate the marginal portion so that the marginal portion may radially stretch and deflect during filling to provide a flow passage along the adjacent wall surfaces over the gasket, past the clamped region and around the peripheral edge of the gasket.
Claim 2
Dependent Claim
180 words
In a valve for a pressurized dispenser, said valve having a mounting cup, a valve housing immovable relative thereto and a gasket for sealing a discharge passage, the gasket being clamped between a rim of said housing and an adjacent wall of the mounting cup, said mounting cap having a pedestal portion comprising an end wall and a circumferential wall and a filling aperture in the end wall radially outward of the discharge passage and only inward of the clamping rim, the improvement which comprises said gasket having an annular clamped region, a peripheral edge having portions which extend to contact a surrounding wall separated by other portions which do not contact the surrounding wall, and a marginal portion between the peripheral edge and the clamped region, and a clearance space below the marginal portion of the gasket to accommodate the marginal portion so that the marginal portion may radially stretch and deflect during filling to provide a flow passage along the adjacent wall surfaces over the gasket, past the clamped region and around the peripheral edge of the gasket.
Claim 3
Dependent Claim
26 words
The improvement of claim 1 wherein the clearance space is provided by a conical surface of the valve housing located radially outward of the clamping rim.
Claim 4
Dependent Claim
25 words
The improvement of claim 1 wherein the clearance space is provided by a circumferential rabbet in the housing located radially outward of the clamping rim.
Claim 5
Dependent Claim
13 words
The improvement of claim 1 wherein the periphery of the gasket is polygonal.
Claim 6
Dependent Claim
48 words
The improvement of claim 1 wherein the clearance space has a radial dimension at least 40% of the thickness of the gasket when uncompressed and an axial dimension below the clamping rim of at least 110% of the greatest radial extent of the marginal portion of the gasket.
Claim 7
Dependent Claim
21 words
The improvement of claim 1 wherein the end wall of the pedestal is joined to the circumferential wall by a radius.
Claim 8
Dependent Claim
13 words
The improvement of claim 6 wherein the radius is at least 0.8 mm.
References Cited (Backward Citations)
US3180374A
Cited
US3845887A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |