US4332079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making rotor rectangularly shaped tongues
Assignee: Garrett Corp
•
Filing: 1980-04-07
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Granted: 1982-06-01
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Expires: 2000-04-07
Abstract
Abstract A rotor assembly having a hub with rectangularly-shaped tongues and wedge-shaped permanent magnets.
Inventors
- 👤 Alexander Silver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:50
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
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
115 words
A method of forming a rotor for a permanent magnet machine, comprising the steps of: forming a rotor hub having a plurality of equally spaced, radially extending, elongated parallel sided tongues; bonding an inwardly converging, wedge-shaped support member, having an elongated, inwardly disposed parallel sided slot, over each radially extending, elongated parallel sided tongue to form a plurality of outwardly converging, wedge-shaped slots therebetween; inserting a plurality of wedge-shaped permanent magnets having outwardly converging sides, individual magnets disposed in individual outwardly converging wedge-shaped slots between support members; and rotating the rotor to wedge the outwardly converging permanent magnets into the outwardly converging slots to compress the sides of the support member slots on the tongues.
Claim 2
Independent Claim
115 words
A method of forming a rotor for a permanent magnet machine, comprising the steps of: forming a rotor hub having a plurality of equally spaced, radially extending, elongated parallel sided tongues; bonding an inwardly converging, wedge-shaped support member, having an elongated, inwardly disposed parallel sided slot, over each radially extending, elongated parallel sided tongue to form a plurality of outwardly converging, wedge-shaped slots therebetween; inserting a plurality of wedge-shaped permanent magnets having outwardly converging sides, individual magnets disposed in individual outwardly converging wedge-shaped slots between support members; and rotating the rotor to wedge the outwardly converging permanent magnets into the outwardly converging slots to compress the sides of the support member slots on the tongues.
Claim 3
Dependent Claim
37 words
The method of claim 1 wherein the sides of the individual 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 magnets.
Claim 4
Dependent Claim
37 words
The method of claim 1 wherein the sides of the individual 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 magnets.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-31 | 1985-11-30 | 1986-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-31 | 1989-11-30 | 1990-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-31 | 1993-11-30 | 1994-06-01 | $7700.00 | Window Closed / Lapsed |