US3796356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telescoping mandrel for expansible bladder container
Assignee: Plant Industries Inc
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Filing: 1972-04-12
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Granted: 1974-03-12
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Expires: 1992-04-12
Abstract
Abstract A container of the expansible bladder-type wherein prestressing of the bladder is obtained by means of a telescopic extensible mandrel which imparts pressure to the bladder at the time of filling of same with the product to be stored. By inducing the prestress in the expansible membrance at the last possible moment, it is possible to ease assembly procedures because nontensioned members are being assembled and additionally, since it is the filling operation that positions the mandrel into the pretensioning position, the expansible membrance does not take a set to thereby curtail the elastic memory thereof.
Inventors
- 👤 F Venus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:21
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/771; B65D83/7711
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
314 words
A fluid dispenser comprising the combination of: a container body and cover therefor including a fluid passageway communicating the exterior thereof to a valve member supported within said container body; at least one expansible member having an open end and a closed end and being adapted to be retained within said container body and store fluid therein; a valve sealing member disposed in axially shiftable relationship within said valve member and adapted to open and close the communication between said fluid passageway and the interior of said at least one expansible member; and telescopic, extensible means to impart longitudinal and radial stress to the walls of said at least one expansible member, said telescopic, extensible means comprisIng an elongate member mounted in a guide member comprising two opposed depending track-like members having opposed notches at the terminal portions thereof for longitudinal movement with respect thereto, said elongate member being provided with retaining means on one end to retain said member on said guide member and having a spherically-shaped opposed end opposite said one end adapted to be retained within said at least one expansible member, the interior extremity of said at least one expansible member being provided with a retaining means to retain said opposed end of said elongate member therein, the interior extremity of said at least one expansible member being provided with a retaining pocket to receive said spherically-shaped opposed end of said elongate member in a tight friction-fit manner, the lower portion of said guide member being provided with locking means to lock said elongate member in the extreme, extended position, and locking means comprising opposed yieldably mounted fingers, said fingers of said elongate member being biased into engagement with said opposed, depending, track-like members, locking of said elongate mamber in the extreme, extended position being obtained by the coaction of said fingers being received within said notches in abutting relationship.
Claim 2
Dependent Claim
314 words
A fluid dispenser comprising the combination of: a container body and cover therefor including a fluid passageway communicating the exterior thereof to a valve member supported within said container body; at least one expansible member having an open end and a closed end and being adapted to be retained within said container body and store fluid therein; a valve sealing member disposed in axially shiftable relationship within said valve member and adapted to open and close the communication between said fluid passageway and the interior of said at least one expansible member; and telescopic, extensible means to impart longitudinal and radial stress to the walls of said at least one expansible member, said telescopic, extensible means comprisIng an elongate member mounted in a guide member comprising two opposed depending track-like members having opposed notches at the terminal portions thereof for longitudinal movement with respect thereto, said elongate member being provided with retaining means on one end to retain said member on said guide member and having a spherically-shaped opposed end opposite said one end adapted to be retained within said at least one expansible member, the interior extremity of said at least one expansible member being provided with a retaining means to retain said opposed end of said elongate member therein, the interior extremity of said at least one expansible member being provided with a retaining pocket to receive said spherically-shaped opposed end of said elongate member in a tight friction-fit manner, the lower portion of said guide member being provided with locking means to lock said elongate member in the extreme, extended position, and locking means comprising opposed yieldably mounted fingers, said fingers of said elongate member being biased into engagement with said opposed, depending, track-like members, locking of said elongate mamber in the extreme, extended position being obtained by the coaction of said fingers being received within said notches in abutting relationship.
Claim 3
Dependent Claim
43 words
A fluid dispenser in accordance with claim 1 wherein said elongate member is adapted to extend substantially the entire interior length of said container body at the time of filling said at least one expansible member with the fluid to be stored therein.
Claim 4
Dependent Claim
29 words
A fluid dispenser in accordance with claim 2 wherein said valve member includes a valve body member having a spring receiving shoulder and said valve seating member acts thereagainst.
Claim 5
Dependent Claim
22 words
A fluid dispenser in accordance with claim 3 wherein said guide member is integral with said valve body member and depends therefrom.
Claim 6
Dependent Claim
22 words
A fluid dispenser in accordance with claim 4 wherein the bottom wall of said container body is formed by a base member.
Claim 7
Dependent Claim
39 words
A fluid dispenser in accordance with claim 5 wherein the central portion of said base member is provided with an annular receiving pocket to receive said opposed end of said elongate member with the extremity of said bladder therebetween.
Claim 8
Dependent Claim
27 words
A fluid dispenser in accordance with claim 6 wherein said base member is provided with spaced apertures communicating the interior of said container to the ambient atmosphere.
Claim 9
Dependent Claim
27 words
A fluid dispenser in accordance with claim 7 wherein said apertures are provided in an inner portion of said base member having a protective, skirt-like member therearound.
Claim 10
Dependent Claim
26 words
A fluid dispenser in accordance with claim 8 wherein said skirt-like member is integral with said base member and is formed from the bottom wall thereof.
References Cited (Backward Citations)
US3672543A
Cited
US3674179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |