US3353046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quiet-running electric motor
Assignee: Individual
•
Filing: 1966-06-16
•
Granted: 1967-11-14
•
Expires: 1986-06-16
Abstract
No abstract record available.
Inventors
- 👤 Papst Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:58
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/12; H02K1/16; H02K3/00; H02K3/46; H02K3/48; H02K3/487; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49012
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN A QUIET-RUNNING MOTOR, IN COMBINATION, A STATOR MEMBER; A ROTOR MEMBER ARRANGED COAXIALLY WITH SAID STATOR MEMBER AND SEPARATED THEREFROM BY AN ANNULAR AIR GAP OF UNIFORM RADIAL WIDTH, ONE OF SAID MEMBERS HAVING AT SAID ANNULAR AIR GAP AN UNINTERRUPTED CYLINDRICAL SURFACE, THE OTHER OF SAID MEMBERS BEING FORMED WITH A PLURALITY OF SLOTS SO AS TO FORM TEETH THEREBETWEEN, EACH OF SAID TEETH HAVING ADJACENT SAID ANNULAR AIR GAP A PORTION WIDER THAN THE REMAINDER THEREOF AND THE SIDE FACES OF SAID PORTIONS ON ADJACENT TEETH FACING EACH OTHER AND APPROACHING EACH OTHER IN DIRECTION TOWARD SAID AIR GAP, THE ENDS OF SAID SIDE FACES AT SAID ANNULAR AIR GAP BEING SPACED FROM EACH OTHER A DISTANCE SUBSTANTIALLY EQUAL TO SAID RADIAL WIDTH OF SAID ANNULAR AIR GAP.
Claim 2
Dependent Claim
131 words
IN A QUIET-RUNNING MOTOR, IN COMBINATION, A STATOR MEMBER; A ROTOR MEMBER ARRANGED COAXIALLY WITH SAID STATOR MEMBER AND SEPARATED THEREFROM BY AN ANNULAR AIR GAP OF UNIFORM RADIAL WIDTH, ONE OF SAID MEMBERS HAVING AT SAID ANNULAR AIR GAP AN UNINTERRUPTED CYLINDRICAL SURFACE, THE OTHER OF SAID MEMBERS BEING FORMED WITH A PLURALITY OF SLOTS SO AS TO FORM TEETH THEREBETWEEN, EACH OF SAID TEETH HAVING ADJACENT SAID ANNULAR AIR GAP A PORTION WIDER THAN THE REMAINDER THEREOF AND THE SIDE FACES OF SAID PORTIONS ON ADJACENT TEETH FACING EACH OTHER AND APPROACHING EACH OTHER IN DIRECTION TOWARD SAID AIR GAP, THE ENDS OF SAID SIDE FACES AT SAID ANNULAR AIR GAP BEING SPACED FROM EACH OTHER A DISTANCE SUBSTANTIALLY EQUAL TO SAID RADIAL WIDTH OF SAID ANNULAR AIR GAP.
References Cited (Backward Citations)
US1302040A
Cited
US1488876A
Cited
US2483066A
Cited
US2451633A
Cited
US2461296A
Cited
US2648788A
Cited
US2956186A
Cited
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 |