Patent US1479051A successfully refreshed from Google Patents.
US3156191A
Expired / Lapsed
US
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Sealing means for pumps and motors
Assignee: Doosan Bobcat North America Inc
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Filing: 1960-12-23
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Granted: 1964-11-10
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Expires: 1980-12-23
Abstract
No abstract record available.
Inventors
- 👤 John A Lauck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:41
CPC Classifications
F; F04; F04C; F04C15/00; F04C15/0003; F04C15/0023; F04C15/0026; F04C2/00; F04C2/08; F04C2/12; F04C2/14; F04C2/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN A FLUID DEVICE HAVING A SHAFT, BEARING MEANS FOR THE SHAFT AND ROTATABLE PRESSURE FLUID TRANSFER MEANS MOUNTED ON THE SHAFT, NON-RESILIENT SEALING MEANS MOUNTED ON THE SHAFT IN SPACED RELATION FROM THE FLUID TRANSFER MEANS AND MOVABLE AXIALLY OF THE SHAFT, SAID SEALING MEANS DEFINING WITH THE SHAFT A LEAKAGE FLUID METERING CLEARANCE, MEANS CONDUCTING PRESSURE FLUID FROM THE FLUID TRANSFER MEANS TO ONE SIDE OF SAID SEALING MEANS AND A SEALING SURFACE ON THE BEARING MEANS ADJACENT THE OTHER SIDE OF SAID SEALING MEANS, SAID SEALING MEANS BEING ACTUATABLE ALONG THE SHAFT INTO SEALING RELATION WITH SAID
Claim 2
Dependent Claim
100 words
IN A FLUID DEVICE HAVING A SHAFT, BEARING MEANS FOR THE SHAFT AND ROTATABLE PRESSURE FLUID TRANSFER MEANS MOUNTED ON THE SHAFT, NON-RESILIENT SEALING MEANS MOUNTED ON THE SHAFT IN SPACED RELATION FROM THE FLUID TRANSFER MEANS AND MOVABLE AXIALLY OF THE SHAFT, SAID SEALING MEANS DEFINING WITH THE SHAFT A LEAKAGE FLUID METERING CLEARANCE, MEANS CONDUCTING PRESSURE FLUID FROM THE FLUID TRANSFER MEANS TO ONE SIDE OF SAID SEALING MEANS AND A SEALING SURFACE ON THE BEARING MEANS ADJACENT THE OTHER SIDE OF SAID SEALING MEANS, SAID SEALING MEANS BEING ACTUATABLE ALONG THE SHAFT INTO SEALING RELATION WITH SAID
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |