US3990802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor with removable shaft assembly
Assignee: Individual
•
Filing: 1975-03-17
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Granted: 1976-11-09
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Expires: 1995-03-17
Abstract
Abstract An electric motor having a removable shaft assembly comprising a plate member attached to the motor core, an assembly shaft, and a bearing arrangement attached at one end to the assembly shaft and at the other end to the plate member.
Inventors
- 👤 Thomas Corona
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:00
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/28
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
92 words
An electric motor which comprises a. a keyed shaft fixedly attached to and extending through a core, said shaft extending beyond said core's end; and b. a shaft assembly comprising i. a plate member which is removably attached to said core, said plate member having a plate cavity shaped to receive said keyed shaft in a locking arrangement. ii. a second shaft, and iii. a bearing assembly fixedly attached to said plate member, said second shaft rotatably attached to said bearing assembly and protruding outward therefrom and away from said plate member.
Claim 2
Dependent Claim
92 words
An electric motor which comprises a. a keyed shaft fixedly attached to and extending through a core, said shaft extending beyond said core's end; and b. a shaft assembly comprising i. a plate member which is removably attached to said core, said plate member having a plate cavity shaped to receive said keyed shaft in a locking arrangement. ii. a second shaft, and iii. a bearing assembly fixedly attached to said plate member, said second shaft rotatably attached to said bearing assembly and protruding outward therefrom and away from said plate member.
Claim 3
Dependent Claim
65 words
An electric motor according to claim 1 wherein a. said core end has core cavities threaded to receive threaded bolts and b. said plate member has openings which are positionally matched to said core cavities when said plate member is placed adjacent to said core end, and c. threaded bolts to attach said removable shaft assembly to said core when screwed into said core cavities.
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) | 1979-11-09 | 1980-05-10 | 1980-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-09 | 1984-05-10 | 1984-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-09 | 1988-05-10 | 1988-11-09 | $7700.00 | Window Closed / Lapsed |