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Patent US3981418A successfully refreshed from Google Patents.
US3981418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expulsion device
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1966-11-18
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Granted: 1976-09-21
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Expires: 1986-11-18
Abstract
Abstract An improved fluid expulsion device of the class comprising an expulsion container containing a diaphragm adapted to be displaced by a pressure fluid acting on one side of the diaphragm to expel a second fluid at the opposite side of the diaphragm. The diaphragm is bonded to the inner container wall, either by electrodeposition of a metal on the wall in such a way as to form the diaphragm on and in bonded relation to the wall or by adhesively bonding a preformed diaphragm to the wall by adhesive bands, whereby displacement of the diaphragm is accompanied by peeling of the latter from the container wall without wrinkling, tearing, or ripping.
Inventors
- 👤 Clyde E. Williamson
- 👤 Louis A. Rosales
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:40
CPC Classifications
F; F42; F42B; F42B29/00; B; B64; B64G; B64G1/00; B64G1/22; B64G1/40; B64G1/402; B64G1/4021
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
94 words
A fluid expulsion device comprising: a container; inlet means for introduction of a first fluid into said container; an outlet for expulsion of a second fluid from said container; and a diaphragm within and electrodeposited on the interior wall of said container for separating said first and second fluids, said diaphragm being bonded over substantially its entire surface to the interior wall of said container, whereby said diaphragm will peel smoothly from said container when said second fluid is expelled through said outlet in response to said first fluid being introduced into said container.
Claim 2
Dependent Claim
94 words
A fluid expulsion device comprising: a container; inlet means for introduction of a first fluid into said container; an outlet for expulsion of a second fluid from said container; and a diaphragm within and electrodeposited on the interior wall of said container for separating said first and second fluids, said diaphragm being bonded over substantially its entire surface to the interior wall of said container, whereby said diaphragm will peel smoothly from said container when said second fluid is expelled through said outlet in response to said first fluid being introduced into said container.
Claim 3
Dependent Claim
122 words
A fluid expulsion device comprising: a container; inlet means for introduction of a first fluid into said container; an outlet for expulsion of a second fluid from said container; a diaphragm within said container for separating said first and second fluids, said diaphragm being bonded to the interior wall of said container by an adhesive bond which increases in strength in a direction from said inlet toward said outlet and comprises a plurality of adhesive bands, said bands located toward said outlet being wider than the bands located away from said outlet; and whereby said diaphragm will peel smoothly from said container when said second fluid is expelled through said outlet in response to said first fluid being introduced into said container.
Claim 4
Dependent Claim
122 words
A fluid expulsion device comprising: a container; inlet means for introduction of a first fluid into said container; an outlet for expulsion of a second fluid from said container; a diaphragm within said container for separating said first and second fluids, said diaphragm being bonded to the interior wall of said container by an adhesive bond which increases in strength in a direction from said inlet toward said outlet and comprises a plurality of adhesive bands, said bands located toward said outlet being wider than the bands located away from said outlet; and whereby said diaphragm will peel smoothly from said container when said second fluid is expelled through said outlet in response to said first fluid being introduced into said container.
Claim 5
Dependent Claim
133 words
A fluid expulsion device comprising: a container; inlet means for introduction of a first fluid into said container; an outlet for expulsion of a second fluid from said container; a diaphragm within said container for separating said first and second fluids, said diaphragm being bonded to the interior wall of said container by an adhesive bond which increases in strength in a direction from said inlet toward said outlet and comprises a plurality of adhesive bands, said bands extending in a direction toward said outlet in an orange peel arrangement with the thickness of the peels increasing in a direction toward said outlet; and whereby said diaphragm will peel smoothly from said container when said second fluid is expelled through said outlet in response to said first fluid being introduced into said container.
Claim 6
Dependent Claim
133 words
A fluid expulsion device comprising: a container; inlet means for introduction of a first fluid into said container; an outlet for expulsion of a second fluid from said container; a diaphragm within said container for separating said first and second fluids, said diaphragm being bonded to the interior wall of said container by an adhesive bond which increases in strength in a direction from said inlet toward said outlet and comprises a plurality of adhesive bands, said bands extending in a direction toward said outlet in an orange peel arrangement with the thickness of the peels increasing in a direction toward said outlet; and whereby said diaphragm will peel smoothly from said container when said second fluid is expelled through said outlet in response to said first fluid being introduced into said container.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-21 | 1980-03-22 | 1980-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-21 | 1984-03-22 | 1984-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-21 | 1988-03-22 | 1988-09-21 | $7700.00 | Window Closed / Lapsed |