Patent US3351235A successfully refreshed from Google Patents.
US3351235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal membrane mechanism and method for unloading material from containers
Assignee: Individual
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Filing: 1964-10-30
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Granted: 1967-11-07
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Expires: 1984-10-30
Abstract
No abstract record available.
Inventors
- 👤 Paton Hamilton Neil King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:59
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/54; B65D88/58; B65D88/60; B65D88/62
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
203 words
UNLOADING MECHANISM FOR A HORIZONTALLY-ELONGATED CONTAINER TO HOLD DISCRETE PARTICLE MATERIAL COMPRISING A FLEXIBLE CUP-SHAPED MEMBRANE ADAPTED TO BE DISPOSED IN CONTAINER-LINING RELATIONSHIP WITH AN END WALL AND WITH PORTIONS OF THE TOP, BOTTOM AND SIDE WALLS OF THE CONTAINER AND HAVING AN END WALL IN UPRIGHT POSITION WHEN IN SUCH CONTAINER-LINING RELATIONSHIP AND TOP AND BOTTOM SIDE WALLS EXTENDING FROM SAID MEMBRANE END WALL IN GERNERALLY HORIZONTAL PORITION WHEN IN SUCH CONTAINER-LINING RELATIONSHIP, SAID SIDE WALLS OF SAID MEMBRANE BEING OF AN AXIAL EXTENT LESS THAN ONE-HALF OF THE HORIZONTAL EXTENT OF THE CONTAINER, ATTACHING MEANS SPACED FROM SAID UPRIGHT MEMBRANE END WALL WHEN IN SUCH CONTAINER-LINING RELATIONSHIP AND SECURING THE EDGE PORTIONS OF SAID SIDE WALLS TO THE WALL OF THE CONTAINER SUBSTANTIALLY IN AN UPRIGHT PLANE SPACED FROM SUCH CONTAINER END WALL, AND DISCHARGE MEANS LOCATED IMMEDIATELY AT THE SIDE OF SAID ATTACHING MEANS OPPOSITE SAID MEMBRANE END WALL IN CONTAINER LINING RELATIONSHIP AND INCLUDING AN OUTLET LOCATED AT THE BOTTOM OF THE CONTAINER FOR REMOVAL OF MATERIAL FROM THE CONTAINER BY INVERSION OF SAID MEMBRANE FROM WALL-LINING RELATIONSHIP INTO A POSITION IN WHICH A PORTION OF THE BOTTOM OF SAID MEMBRANE IS IN OVERLYING REGISTRY WITH SAID DISCHARGE MEANS.
Claim 2
Dependent Claim
203 words
UNLOADING MECHANISM FOR A HORIZONTALLY-ELONGATED CONTAINER TO HOLD DISCRETE PARTICLE MATERIAL COMPRISING A FLEXIBLE CUP-SHAPED MEMBRANE ADAPTED TO BE DISPOSED IN CONTAINER-LINING RELATIONSHIP WITH AN END WALL AND WITH PORTIONS OF THE TOP, BOTTOM AND SIDE WALLS OF THE CONTAINER AND HAVING AN END WALL IN UPRIGHT POSITION WHEN IN SUCH CONTAINER-LINING RELATIONSHIP AND TOP AND BOTTOM SIDE WALLS EXTENDING FROM SAID MEMBRANE END WALL IN GERNERALLY HORIZONTAL PORITION WHEN IN SUCH CONTAINER-LINING RELATIONSHIP, SAID SIDE WALLS OF SAID MEMBRANE BEING OF AN AXIAL EXTENT LESS THAN ONE-HALF OF THE HORIZONTAL EXTENT OF THE CONTAINER, ATTACHING MEANS SPACED FROM SAID UPRIGHT MEMBRANE END WALL WHEN IN SUCH CONTAINER-LINING RELATIONSHIP AND SECURING THE EDGE PORTIONS OF SAID SIDE WALLS TO THE WALL OF THE CONTAINER SUBSTANTIALLY IN AN UPRIGHT PLANE SPACED FROM SUCH CONTAINER END WALL, AND DISCHARGE MEANS LOCATED IMMEDIATELY AT THE SIDE OF SAID ATTACHING MEANS OPPOSITE SAID MEMBRANE END WALL IN CONTAINER LINING RELATIONSHIP AND INCLUDING AN OUTLET LOCATED AT THE BOTTOM OF THE CONTAINER FOR REMOVAL OF MATERIAL FROM THE CONTAINER BY INVERSION OF SAID MEMBRANE FROM WALL-LINING RELATIONSHIP INTO A POSITION IN WHICH A PORTION OF THE BOTTOM OF SAID MEMBRANE IS IN OVERLYING REGISTRY WITH SAID DISCHARGE MEANS.
Claim 3
Dependent Claim
114 words
IN THE METHOD OF UNLOADING DISCRETE PARTICLE MATERIAL FROM A CONTAINER THROUGH A BOTTOM DISCHARGE PORT, THE STEPS WHICH COMPRISE PROVIDING A MEMBRANE IN THE CONTAINER HAVING A PORTION OVERLYING AND ENGAGEABLE WITH THE UPPER SURFACE OF THE DISCRETE PARTICLE MATERIAL IN THE CONTAINER, AND SUBJECTING THE SIDE OF THE MEMBRANE ENGAGED WITH THE DISCRETE PARTICLE MATERIAL TO A SUCTION SOURCE FOR PRODUCING THEREON A PRESSURE LESS THAN THAT ON THE OPPOSITE SIDE OF THE MEMBRANE AND THEREBY PROGRESSIVELY PRESSING THE MEMBRANE AGAINST THE DISCRETE PARTICLAE MATERIAL AND MOVING SUCH OVERLYING PORTION OF THE MEMBRANE DOWNWARD TO FOLLOW THE DISCRETE PARTICLE MATERIAL IN ENGAGEMENT THEREWITH AS THE BODY OF SUCH MATERIAL RECEDES DURING DISCHARGE.
Claim 4
Dependent Claim
114 words
IN THE METHOD OF UNLOADING DISCRETE PARTICLE MATERIAL FROM A CONTAINER THROUGH A BOTTOM DISCHARGE PORT, THE STEPS WHICH COMPRISE PROVIDING A MEMBRANE IN THE CONTAINER HAVING A PORTION OVERLYING AND ENGAGEABLE WITH THE UPPER SURFACE OF THE DISCRETE PARTICLE MATERIAL IN THE CONTAINER, AND SUBJECTING THE SIDE OF THE MEMBRANE ENGAGED WITH THE DISCRETE PARTICLE MATERIAL TO A SUCTION SOURCE FOR PRODUCING THEREON A PRESSURE LESS THAN THAT ON THE OPPOSITE SIDE OF THE MEMBRANE AND THEREBY PROGRESSIVELY PRESSING THE MEMBRANE AGAINST THE DISCRETE PARTICLAE MATERIAL AND MOVING SUCH OVERLYING PORTION OF THE MEMBRANE DOWNWARD TO FOLLOW THE DISCRETE PARTICLE MATERIAL IN ENGAGEMENT THEREWITH AS THE BODY OF SUCH MATERIAL RECEDES DURING DISCHARGE.
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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |