US4930201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing a composite sleeve for an electric motor
Assignee: Kollmorgen Corp
•
Filing: 1988-10-14
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Granted: 1990-06-05
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Expires: 2008-10-14
Abstract
Abstract In an electric motor having a plurality of magnets bonded to a rotor hub, a composite sleeve is disposed over the rotor hub and magnets. The composite sleeve may be wound directly upon the rotor hub, or the composite sleeve may be wound upon a mandrel and slid over the rotor hub.
Inventors
- 👤 Gerald W. Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:27
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/27; H02K1/2706; H02K1/272; H02K1/274; H02K1/2753; H02K1/278; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49012; Y10T29/49826; Y10T29/49863; Y10T29/49865
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
112 words
A method for manufacturing a composite sleeve for a hollow rotor hub, having a plurality of magnets bonded thereto, for an electric motor or generator which comprises the steps of: winding the composite sleeve upon a mandrel having a diameter less than that of the rotor hub; cooling the hollow rotor hub/magnet assembly until it shrinks to a diameter less than that of the sleeve; inserting the cooled rotor hub/magnet assembly into the composite sleeve; and pressing the hollow rotor/hub/magnet/sleeve assembly onto the shaft such that both an interference fit between the shaft and the rotor/hub/magnet/sleeve assembly and an interference fit between the composite sleeve and the rotor hub/magnet assembly are achieved.
Claim 2
Independent Claim
112 words
A method for manufacturing a composite sleeve for a hollow rotor hub, having a plurality of magnets bonded thereto, for an electric motor or generator which comprises the steps of: winding the composite sleeve upon a mandrel having a diameter less than that of the rotor hub; cooling the hollow rotor hub/magnet assembly until it shrinks to a diameter less than that of the sleeve; inserting the cooled rotor hub/magnet assembly into the composite sleeve; and pressing the hollow rotor/hub/magnet/sleeve assembly onto the shaft such that both an interference fit between the shaft and the rotor/hub/magnet/sleeve assembly and an interference fit between the composite sleeve and the rotor hub/magnet assembly are achieved.
Claim 3
Independent Claim
124 words
A method of manufacturing a composite sleeve for a hollow rotor hub, having a plurality of magnets bonded thereto, for an electric motor or generator which comprise the steps of: winding the composite sleeve directly on the rotor hub/magnet assembly at room temperature; allowing the matrix of the composite sleeve to initially set up at a relatively low temperature above room temperature; bringing the composite sleeve and the rotor hub/magnet assembly to a cure temperature; and allowing the composite sleeve to return to room temperature and pressing the hollow rotor hub/magnet/sleeve assembly onto the shaft such that both an interference fit between the shaft and the rotor hub/magnet/sleeve assembly and an interference fit between the composite sleeve and the rotor hub/magnet assembly are achieved.
Claim 4
Independent Claim
124 words
A method of manufacturing a composite sleeve for a hollow rotor hub, having a plurality of magnets bonded thereto, for an electric motor or generator which comprise the steps of: winding the composite sleeve directly on the rotor hub/magnet assembly at room temperature; allowing the matrix of the composite sleeve to initially set up at a relatively low temperature above room temperature; bringing the composite sleeve and the rotor hub/magnet assembly to a cure temperature; and allowing the composite sleeve to return to room temperature and pressing the hollow rotor hub/magnet/sleeve assembly onto the shaft such that both an interference fit between the shaft and the rotor hub/magnet/sleeve assembly and an interference fit between the composite sleeve and the rotor hub/magnet assembly are achieved.
Claim 5
Dependent Claim
38 words
A method according to claim 2 which includes the further steps of inserting filler pieces between the magnets prior to winding the composite sleeve and removing the filler pieces after the composite sleeve has returned to room temperature.
References Cited (Backward Citations)
US2795715A
Cited
US3077026A
Cited
US3344325A
Cited
US3968390A
Cited
US3858308A
Cited
US4113518A
Cited
US4150582A
Cited
US4454438A
Cited
US4296544A
Cited
US4433261A
Cited
US4564777A
Cited
US4549341A
Cited
US4531071A
Cited
US4617726A
Cited
US4729160A
Cited
US4633113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-04 | 1993-12-04 | 1994-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-04 | 1997-12-04 | 1998-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-04 | 2001-12-04 | 2002-06-05 | $7700.00 | Window Closed / Lapsed |