Patent US3199795A successfully refreshed from Google Patents.
US3199795A
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US
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Mixing machine
Assignee: Royal Industries Co Ltd
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Filing: 1963-01-21
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Granted: 1965-08-10
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Expires: 1983-01-21
Abstract
No abstract record available.
Inventors
- 👤 Marvin D Bennett
- 👤 Beach Mannattan
- 👤 Richard D Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:33
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3436; F16J15/344; B; B01; B01F; B01F35/00; B01F35/40; B01F35/41
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
A SHAFT SEAL FOR A ROTATABLE SHAFT COMPRISING A PAIR OF SEALING RINGSD CONSTRUCTED OF A MATERIAL HARDER THAN ANY MATERIAL TO WHICH THE SHAFT IS TO BE EXPOSED, ONE OF THE ADJACENT SURFACES OF EACH OF THE RINGS BEING GROUND FLAT TO PRESELECTED MICROCROINCH TOLERANCES TO ELIMINATE ANY AIR GAP BETWEEN THE POLISHED SURFACES WHEN THE ADJACENT SURFACES ARE MOUNTED ON A ROTATABLE SHAFT TO BE SEALED, MEANS FOR RESILIENTLY MOUNTING ONE OF SAID SEALING RINGS IN A STATIONARY SEALING POSITION WITH RESPECT TO A SHAFT AND YET FOLLOW THE MOVEMENTS OF THE SHAFT, MEAN FOR MOUNTING THE OTHER RING IN A SEALING RELATIONSHIP WITH A ROTATABLE SHAFT AND TO BE ROTATABLE WITH SAID SHAFT, AND MEANS FOR MAINTAINING A PRESELECTED AMOUNT OF PRESSURE ON SAID SEALING RINGS TO MAINTAIN THEM IN AN ALIGENED SEALING RELATIONSHIP AND YET ALLOW THE RESILIENTLY MOUNTED RING TO CONTINOUSLY SEAL AGAINST THE OTHER RING.
Claim 2
Dependent Claim
151 words
A SHAFT SEAL FOR A ROTATABLE SHAFT COMPRISING A PAIR OF SEALING RINGSD CONSTRUCTED OF A MATERIAL HARDER THAN ANY MATERIAL TO WHICH THE SHAFT IS TO BE EXPOSED, ONE OF THE ADJACENT SURFACES OF EACH OF THE RINGS BEING GROUND FLAT TO PRESELECTED MICROCROINCH TOLERANCES TO ELIMINATE ANY AIR GAP BETWEEN THE POLISHED SURFACES WHEN THE ADJACENT SURFACES ARE MOUNTED ON A ROTATABLE SHAFT TO BE SEALED, MEANS FOR RESILIENTLY MOUNTING ONE OF SAID SEALING RINGS IN A STATIONARY SEALING POSITION WITH RESPECT TO A SHAFT AND YET FOLLOW THE MOVEMENTS OF THE SHAFT, MEAN FOR MOUNTING THE OTHER RING IN A SEALING RELATIONSHIP WITH A ROTATABLE SHAFT AND TO BE ROTATABLE WITH SAID SHAFT, AND MEANS FOR MAINTAINING A PRESELECTED AMOUNT OF PRESSURE ON SAID SEALING RINGS TO MAINTAIN THEM IN AN ALIGENED SEALING RELATIONSHIP AND YET ALLOW THE RESILIENTLY MOUNTED RING TO CONTINOUSLY SEAL AGAINST THE OTHER RING.
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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |