Patent US2591316A successfully refreshed from Google Patents.
Patent US4336649A successfully refreshed from Google Patents.
US4336649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making rotor assembly having anchor with undulating sides
Assignee: Garrett Corp
•
Filing: 1980-04-07
•
Granted: 1982-06-29
•
Expires: 2000-04-07
Abstract
Abstract A rotor assembly having wedge-shaped permanent magnets and anchors with undulating sides for attaching the rotor hub to the pole bodies.
Inventors
- 👤 Jerry Glaser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:23
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/27; H02K1/2706; H02K1/272; H02K1/274; H02K1/2753; H02K1/276; H02K1/2766; H02K1/2773; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49012
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
127 words
A method of forming a rotor for a permanent magnet machine, comprising the steps of: forming a non-magnetic rotor hub having a plurality of equally spaced, radially extending tongues with undulating sides; forming a plurality of assemblies of a wedge-shaped tangentially magnetized permanent magnet having outwardly converging sides between a pair of wedge-shaped ferromagnetic support members, each of said support members having a smooth side secured to the permanent magnet and an opposite side having a radially outer smooth portion and a radially inner undulating portion; and inserting a formed assembly between the radially extending tongues of the rotor hub with radially outer smooth portions of adjacent assemblies in contact and the radially inner undulating portions cooperating with the corresponding undulating sides of the radially extending tongues.
Claim 2
Independent Claim
127 words
A method of forming a rotor for a permanent magnet machine, comprising the steps of: forming a non-magnetic rotor hub having a plurality of equally spaced, radially extending tongues with undulating sides; forming a plurality of assemblies of a wedge-shaped tangentially magnetized permanent magnet having outwardly converging sides between a pair of wedge-shaped ferromagnetic support members, each of said support members having a smooth side secured to the permanent magnet and an opposite side having a radially outer smooth portion and a radially inner undulating portion; and inserting a formed assembly between the radially extending tongues of the rotor hub with radially outer smooth portions of adjacent assemblies in contact and the radially inner undulating portions cooperating with the corresponding undulating sides of the radially extending tongues.
Claim 3
Independent Claim
137 words
A method of forming a rotor for a permanent magnet machine, comprising the steps of: forming a non-magnetic rotor hub having a plurality of equally spaced, inwardly extending grooves with undulating sides; forming a plurality of assemblies of a wedge-shaped tangentially magnetized permanent magnet having outwardly converging sides between a pair of wedge-shaped ferromagnetic support members, each of said support members extending radially inwardly beyond the wedge-shaped permanent magnet and having an outwardly disposed generally smooth side and an opposite side having a smooth portion secured to the permanent magnet and a radially inwardly projecting undulating portion; and inserting the radially inward projecting portions of the formed assembly into adjacent grooves of the rotor hub, the smooth outwardly disposed sides of adjacent assemblies forming a tongue having undulating sides cooperative with the undulating sides of a groove.
Claim 4
Independent Claim
137 words
A method of forming a rotor for a permanent magnet machine, comprising the steps of: forming a non-magnetic rotor hub having a plurality of equally spaced, inwardly extending grooves with undulating sides; forming a plurality of assemblies of a wedge-shaped tangentially magnetized permanent magnet having outwardly converging sides between a pair of wedge-shaped ferromagnetic support members, each of said support members extending radially inwardly beyond the wedge-shaped permanent magnet and having an outwardly disposed generally smooth side and an opposite side having a smooth portion secured to the permanent magnet and a radially inwardly projecting undulating portion; and inserting the radially inward projecting portions of the formed assembly into adjacent grooves of the rotor hub, the smooth outwardly disposed sides of adjacent assemblies forming a tongue having undulating sides cooperative with the undulating sides of a groove.
Claim 5
Dependent Claim
41 words
The method of claim 1 or 2 wherein the sides of the individual permanent magnets form an angle within the range of 2-9 degrees with a plane parallel to the rotor radius through the center line of said individual permanent magnet.
Claim 6
Dependent Claim
41 words
The method of claim 1 or 2 wherein the sides of the individual permanent magnets form an angle within the range of 6-8 degrees with a plane parallel to the rotor radius through the center line of said individual permanent magnets.
References Cited (Backward Citations)
US902019A
Cited
US2033059A
Cited
US2719931A
Cited
US2739253A
Cited
US3083311A
Cited
US3237034A
Cited
DE2659650A1
Cited
US4117360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |