Patent US3531931A successfully refreshed from Google Patents.
Patent US3091309A successfully refreshed from Google Patents.
US3091309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid dynamometer
Assignee: KAHN AND CO Inc
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Filing: 1961-05-08
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Granted: 1963-05-28
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Expires: 1981-05-08
Abstract
No abstract record available.
Inventors
- 👤 Robert S Sheldon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:50
CPC Classifications
G; G01; G01L; G01L3/00; G01L3/16; G01L3/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
IN A DYNAMOMETER, THE COMBINATION OF: A STATOR COMPRISING A PLURALITY OF AXIALLY SPACED ANNULAR PLATES; A ROTOR PROVIDED WITH A PLURALITY OF AXIALLY SPACED DISKS WHEREBY SAID DISKS HAVE SURFACES OPPOSED TO AND SPACED FROM THE SURFACES OF SAID PLATES; EACH OF SAID PLATES AND DISKS PROVIDED WITH RADIALLY SPACED AXIAL APERTURES THROUGH WHICH FLUID INTRODUCED INTO THE DYNAMOMETER IS ADAPTED TO FLOW; RESPECTIVE APERTURES IN THE PLATES BEING ARRANGED IN ROWS AND AXES THROUGH SAID ROWS BEING DISPOSED SUBSTANTIALLY PARALLEL TO TH AXIS OF ROTATION OF SAID ROTOR; RESPECTIVE APERTURES IN THE DISKS BEING ALSO ARRANGED IN ROWS AND THE AXES THROUGH RESPECTIVE APERTURES OF THE DISKS BEING INCLINED WITH RESPECT TO THE CORRESPONDING AXES ASSOCIATED WITH THE PLATES THEREBY CAUSING THE MAJORITY OF OPPOSING APERTURES IN ADAJCENT PLATES AND DISKS TO BE MISALIGNED TO PROVIDE SUBSTANTIALLY CONSTANT POWER DISSIPATION FOR ANY ROTATIONAL POSITION OF THE ROTOR AS FLUID PASSES THROUGH THE APERTURES FROM THE PLATES TO THE DISKS.
Claim 2
Dependent Claim
161 words
IN A DYNAMOMETER, THE COMBINATION OF: A STATOR COMPRISING A PLURALITY OF AXIALLY SPACED ANNULAR PLATES; A ROTOR PROVIDED WITH A PLURALITY OF AXIALLY SPACED DISKS WHEREBY SAID DISKS HAVE SURFACES OPPOSED TO AND SPACED FROM THE SURFACES OF SAID PLATES; EACH OF SAID PLATES AND DISKS PROVIDED WITH RADIALLY SPACED AXIAL APERTURES THROUGH WHICH FLUID INTRODUCED INTO THE DYNAMOMETER IS ADAPTED TO FLOW; RESPECTIVE APERTURES IN THE PLATES BEING ARRANGED IN ROWS AND AXES THROUGH SAID ROWS BEING DISPOSED SUBSTANTIALLY PARALLEL TO TH AXIS OF ROTATION OF SAID ROTOR; RESPECTIVE APERTURES IN THE DISKS BEING ALSO ARRANGED IN ROWS AND THE AXES THROUGH RESPECTIVE APERTURES OF THE DISKS BEING INCLINED WITH RESPECT TO THE CORRESPONDING AXES ASSOCIATED WITH THE PLATES THEREBY CAUSING THE MAJORITY OF OPPOSING APERTURES IN ADAJCENT PLATES AND DISKS TO BE MISALIGNED TO PROVIDE SUBSTANTIALLY CONSTANT POWER DISSIPATION FOR ANY ROTATIONAL POSITION OF THE ROTOR AS FLUID PASSES THROUGH THE APERTURES FROM THE PLATES TO THE DISKS.
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) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |