Patent US3352385A successfully refreshed from Google Patents.
US3352385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrodynamic retarder
Assignee: Caterpillar Inc
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Filing: 1965-11-22
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Granted: 1967-11-14
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Expires: 1985-11-22
Abstract
No abstract record available.
Inventors
- 👤 Lowell E Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:53
CPC Classifications
F; F16; F16D; F16D57/00; F16D57/04; F16D57/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
IN A HYDRODYNAMIC RETARDER COMPRISING A BLADED ROTOR MOUNTED ON A ROTATABLE SHAFT AND A STATIONARY HOUSING ENCLOSING SAID ROTOR TO FORM A CAMBER ADAPTED TO BE FILLED WITH A FLUID, SAID HOUSING HAVING STATOR POCKETS ARRANGED ADJACENT THE BLADED PORTION OF SAID ROTOR IN SAID CHAMBER, A FLUID PASSAGE MEANS FORMED THROUGH SAID HOUSING, THE ENTIRE LENGTH THEREOF BEING OF UNIFORM CORSS-SECTIONAL AREA FOR COMMUNICATING FLUID TO SAID CHAMBER, SAID PASSAGE MEANS COMPRISING A CIRCULARLY SHAPED INLET AND A SUBSTANTIALLY OVAL SHAPED OUTLET, SAID OUTLET ARRANGED ADJACENT TO SAID SHAFT REMOTE FROM SAID STATOR POCKETS.
Claim 2
Dependent Claim
96 words
IN A HYDRODYNAMIC RETARDER COMPRISING A BLADED ROTOR MOUNTED ON A ROTATABLE SHAFT AND A STATIONARY HOUSING ENCLOSING SAID ROTOR TO FORM A CAMBER ADAPTED TO BE FILLED WITH A FLUID, SAID HOUSING HAVING STATOR POCKETS ARRANGED ADJACENT THE BLADED PORTION OF SAID ROTOR IN SAID CHAMBER, A FLUID PASSAGE MEANS FORMED THROUGH SAID HOUSING, THE ENTIRE LENGTH THEREOF BEING OF UNIFORM CORSS-SECTIONAL AREA FOR COMMUNICATING FLUID TO SAID CHAMBER, SAID PASSAGE MEANS COMPRISING A CIRCULARLY SHAPED INLET AND A SUBSTANTIALLY OVAL SHAPED OUTLET, SAID OUTLET ARRANGED ADJACENT TO SAID SHAFT REMOTE FROM SAID STATOR POCKETS.
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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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |