US4230240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispensing valve particularly for viscous products and having a dome-shaped applicator
Assignee: Inopak Ltd
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Filing: 1979-07-17
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Granted: 1980-10-28
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Expires: 1999-07-17
Abstract
Abstract A dispensing valve, particularly adapted for a squeeze bottle containing a viscous product, has a valve head in the form of a thin flat wafer of small diameter stationarily supported as freely as possible from obstructions, and above it an elastically deflectable diaphragm having a central opening with a periphery that seats on the periphery of the wafer. Internal pressure causes the diaphragm to move slightly from the wafer during a dispensing operation. The diaphragm is dome-shaped and extends upwardly to form an externally ball-like applicator surface.
Inventors
- 👤 Robert H. Laauwe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:46
CPC Classifications
B; B65; B65D; B65D47/00; B65D47/04; B65D47/20; B65D47/2018; B65D47/2056; B65D47/2081
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
151 words
A dispensing valve having a base comprising a circular rim, means for connecting said rim to a squeeze bottle's mouth, a circular wafer, and spokes connecting with and radiating from the wafer's bottom and extending radially to the rim in a plane below said bottom and positioning the wafer on and normal to the rim's axis, said wafer having a small diameter as compared to the rim's diameter and forming an annular space between the wafer and rim; and a cap comprising an elastically flexible annular diaphragm having a central portion positioned above said plane, said portion having a central opening with a periphery normally resting on the periphery of said wafer, and said diaphragm having a depending flange connected to said rim, said peripheries having substantially mating conical surfaces; wherein the improvement comprises said diaphragm being upwardly dome-shaped so it has an outer applicator surface that is ball-like in appearance.
Claim 2
Dependent Claim
151 words
A dispensing valve having a base comprising a circular rim, means for connecting said rim to a squeeze bottle's mouth, a circular wafer, and spokes connecting with and radiating from the wafer's bottom and extending radially to the rim in a plane below said bottom and positioning the wafer on and normal to the rim's axis, said wafer having a small diameter as compared to the rim's diameter and forming an annular space between the wafer and rim; and a cap comprising an elastically flexible annular diaphragm having a central portion positioned above said plane, said portion having a central opening with a periphery normally resting on the periphery of said wafer, and said diaphragm having a depending flange connected to said rim, said peripheries having substantially mating conical surfaces; wherein the improvement comprises said diaphragm being upwardly dome-shaped so it has an outer applicator surface that is ball-like in appearance.
Claim 3
Dependent Claim
31 words
The valve of claim 1 in which said surface has grooves radiating from said central opening so as to distribute over said applicator surface a product dispensed via the central opening.
Claim 4
Dependent Claim
26 words
The valve of claim 1 in which said diaphragm is made elastically flexible by an annular hinging section positioned adjacent to the diaphragm's said depending flange.
Claim 5
Dependent Claim
23 words
The valve of claim 3 in which said hinging section is formed by the diaphragm having at least one inwardly extending annular pleat.
Claim 6
Dependent Claim
22 words
The valve of claim 4 in which said hinging section is formed by a reduction in the wall thickness of said diaphragm.
Claim 7
Dependent Claim
24 words
The valve of claims 3, 4 or 5 in which the diaphragm's said depending flange externally forms a continuation of said ball-like applicator surface.
Claim 8
Dependent Claim
21 words
The valve of claim 6 in which said depending flange and the external surface of said circular rim are mutually flush.
References Cited (Backward Citations)
FR1441112A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-28 | 1984-04-28 | 1984-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-28 | 1988-04-28 | 1988-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-28 | 1992-04-28 | 1992-10-28 | $7700.00 | Window Closed / Lapsed |