US3399000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrodynamic bearings
Assignee: US Philips Corp
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Filing: 1966-09-27
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Granted: 1968-08-27
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Expires: 1986-09-27
Abstract
No abstract record available.
Inventors
- 👤 Remmers Gerrit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:33
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/102; F16C17/00; F16C17/10; F16C17/102; F16C17/107; F16C33/72; F16C33/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A HYDRODYNAMIC BEARING COMPRISING A ROTATABLE AND A STATIONARY BEARING MEMBER, ONE OF THE COOPERATING SUPPORTING SURFACES OF THE BEARING BEING PROVIDED WITH A SPIRAL GROOVE PATTERN OF SMALL DEPTH WHICH, ON ROTATION OF THE ROTATABLE BEARING MEMBER, URGES THE LUBRICANT FROM THE ENTRANCE SIDE TO THE EXIT SIDE OF THE BEARING GAP, CHAR ACTERIZED IN THAT THE ROTATABLE BEARING MEMBER COMPRISES A STORAGE SPACE FOR THE LUBRICANT, SAID STORAGE SPACE BEING BOUNDED BY A WALL OF THE STATIONARY BEARING MEMBER, TRANSPORT GROOVES FOR THE LUBRICANT BEING PROVIDED IN ONE OF THE SURFACES OF THE STATIONARY AND THE ROTATABLE BEARING MEMBER FACING ONE ANOTHER ON THE SIDE OF THE STORAGE SPACE FACING THE COOPERATING SUPPORTING SURFACES OF THE BEARING, SAID GROOVES HAVING A TRANSPORTING EFFECT IN THE DIRECTION OF THE COOPERATING SUPPORTING SURFACES AND DEBOUCHING IN THE PROXIMITY OF THE ENTRANCE SIDE OF THE SPIRAL GROOVE PATTERN.
Claim 2
Dependent Claim
147 words
A HYDRODYNAMIC BEARING COMPRISING A ROTATABLE AND A STATIONARY BEARING MEMBER, ONE OF THE COOPERATING SUPPORTING SURFACES OF THE BEARING BEING PROVIDED WITH A SPIRAL GROOVE PATTERN OF SMALL DEPTH WHICH, ON ROTATION OF THE ROTATABLE BEARING MEMBER, URGES THE LUBRICANT FROM THE ENTRANCE SIDE TO THE EXIT SIDE OF THE BEARING GAP, CHAR ACTERIZED IN THAT THE ROTATABLE BEARING MEMBER COMPRISES A STORAGE SPACE FOR THE LUBRICANT, SAID STORAGE SPACE BEING BOUNDED BY A WALL OF THE STATIONARY BEARING MEMBER, TRANSPORT GROOVES FOR THE LUBRICANT BEING PROVIDED IN ONE OF THE SURFACES OF THE STATIONARY AND THE ROTATABLE BEARING MEMBER FACING ONE ANOTHER ON THE SIDE OF THE STORAGE SPACE FACING THE COOPERATING SUPPORTING SURFACES OF THE BEARING, SAID GROOVES HAVING A TRANSPORTING EFFECT IN THE DIRECTION OF THE COOPERATING SUPPORTING SURFACES AND DEBOUCHING IN THE PROXIMITY OF THE ENTRANCE SIDE OF THE SPIRAL GROOVE PATTERN.
References Cited (Backward Citations)
DE10615C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |