Patent US3910467A successfully refreshed from Google Patents.
US3910467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure dispensing device with metering trap chamber
Assignee: Sterisol AB
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Filing: 1973-12-14
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Granted: 1975-10-07
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Expires: 1993-12-14
Abstract
Abstract A dispensing device for the contents of package in which a pressure can be exerted on said contents and the package has an outlet opening, which device has a stem normally closing an opening in a deformable disphragm extending across said package opening and when pressure is exerted on said contents they push said diaphragm from said stem permitting the contents to flow through said diaphragm opening. Also a second diaphragm with an opening can be positioned across said package opening and spaced from said stem so that said contents when pressed causes said second diaphragm opening to be closed by said stem limiting the amount of contents between said two diaphragms to flow at a time through said first diaphragm opening.
Inventors
- 👤 Billy Nilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:22
CPC Classifications
B; B65; B65D; B65D47/00; B65D47/04; B65D47/20; B65D47/2018; B65D47/2056; B65D47/2081; G; G01; G01F; G01F11/00; G01F11/02; G01F11/08; G01F11/082
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
209 words
A fluid dispensing package comprising a first chamber and a second chamber, a diaphragm separating said second chamber from said first chamber, said diaphragm having a narrow opening, a valve element positioned in said second chamber for engaging and closing said diaphragm opening, said diaphragm having in its untensioned condition its opening out of contact with said valve element, said second chamber having an opening, a second diaphragm closing said second chamber opening, said second diaphgram having an opening, a second valve element provided in said second chamber and normally closing said second diaphgram opening, the arrangement of said diaphgrams being such that a pressure exerted upon a fluid substance contained in said first chamber causes such substance to pass from said first chamber via the opEning of said first diaphgram into said second chamber at the same time deforming said diaphgram of first chamber, thereby successively approaching the opening of said diaphgram to said first valve element and finally engaging the same to close said opening, the diaphgram of said second chamber being in its normal condition resiliently pressed against said second valve element and provided to open in response to the pressure to the substance contained in said second chamber and to close when said pressure ceases.
Claim 2
Dependent Claim
209 words
A fluid dispensing package comprising a first chamber and a second chamber, a diaphragm separating said second chamber from said first chamber, said diaphragm having a narrow opening, a valve element positioned in said second chamber for engaging and closing said diaphragm opening, said diaphragm having in its untensioned condition its opening out of contact with said valve element, said second chamber having an opening, a second diaphragm closing said second chamber opening, said second diaphgram having an opening, a second valve element provided in said second chamber and normally closing said second diaphgram opening, the arrangement of said diaphgrams being such that a pressure exerted upon a fluid substance contained in said first chamber causes such substance to pass from said first chamber via the opEning of said first diaphgram into said second chamber at the same time deforming said diaphgram of first chamber, thereby successively approaching the opening of said diaphgram to said first valve element and finally engaging the same to close said opening, the diaphgram of said second chamber being in its normal condition resiliently pressed against said second valve element and provided to open in response to the pressure to the substance contained in said second chamber and to close when said pressure ceases.
Claim 3
Dependent Claim
36 words
A dispensing package as claimed in claim 1, wherein said first chamber consists of a flexible container, and said second chamber at least partially consists of the interior of an attachment part connected to said container.
Claim 4
Dependent Claim
75 words
A dispensing package as claimed in claim 1, wherein a container includes said first chamber which has a bottom surface onto which the periphery portion of said first diaphgram is secured and which bottom surface has a central opening communicating with the interior of said second chamber, an axially extending stem fixedly supported by said bottom surface and the ends thereof has projections providing said valve elements sealingly cooperate with the openings of said diaphgrams.
Claim 5
Dependent Claim
35 words
A dispensing package as claimed in claim 3, wherein the bottom surface of said first chamber is concave and has a least one coaxial circumferential recess serving to hold the periphery of said first diaphgram.
References Cited (Backward Citations)
US3734350A
Cited
US3794213A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |