US3184206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support units especially for mine roof
Assignee: MINES DOMANIALES DE POTASSE
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Filing: 1963-03-18
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Granted: 1965-05-18
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Expires: 1983-03-18
Abstract
No abstract record available.
Inventors
- 👤 Meriaux Michel
- 👤 Combier Michel Lablache
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:41
CPC Classifications
E; E21; E21D; E21D15/00; E21D15/50; E21D15/54; E21D15/545; E21D15/48; E21D15/486; E21D23/00; E21D23/04; E21D23/0418
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A SUPPORT UNIT COMPRISING A SUPPORT ELEMENT, A SUPPORT STRUCTURE DEFINING AN APERTURE WHICH RECEIVES THE SUPPORT ELEMENT, THE SUPPORT ELEMENT BEING MOVABLE WITHIN THE APERTURE RELATIVE TO THE SUPPORT STRUCTURE, A SEALINGTIGHT RESILIENT DEFORMABLE CHAMBER LOCATED BETWEEN THE RIM OF SAID APERTURE AND SAID SUPPORT ELEMENT AND MEANS FOR COUPLING THE INTERIOR OF SAID CHAMBER WITH A SOURCE OF FLUID PRESSURE TO RECENTER SAID SUPPORT ELEMENT RELATIVE TO SAID APERTURE AFTER DISPLACEMENT OF SAID ELEMENT FROM A CO-AXIAL POSITION RELATIVE TO SAID APERTURE.
Claim 2
Dependent Claim
84 words
A SUPPORT UNIT COMPRISING A SUPPORT ELEMENT, A SUPPORT STRUCTURE DEFINING AN APERTURE WHICH RECEIVES THE SUPPORT ELEMENT, THE SUPPORT ELEMENT BEING MOVABLE WITHIN THE APERTURE RELATIVE TO THE SUPPORT STRUCTURE, A SEALINGTIGHT RESILIENT DEFORMABLE CHAMBER LOCATED BETWEEN THE RIM OF SAID APERTURE AND SAID SUPPORT ELEMENT AND MEANS FOR COUPLING THE INTERIOR OF SAID CHAMBER WITH A SOURCE OF FLUID PRESSURE TO RECENTER SAID SUPPORT ELEMENT RELATIVE TO SAID APERTURE AFTER DISPLACEMENT OF SAID ELEMENT FROM A CO-AXIAL POSITION RELATIVE TO SAID APERTURE.
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) | 1968-05-17 | 1968-11-16 | 1969-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-17 | 1972-11-16 | 1973-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-17 | 1976-11-16 | 1977-05-18 | $7700.00 | Window Closed / Lapsed |