Patent US4445062A successfully refreshed from Google Patents.
US4445062A
Expired / Lapsed
US
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Rotor assembly having anchors with undulating sides
Assignee: Garrett Corp
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Filing: 1978-12-26
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Granted: 1984-04-24
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Expires: 1998-12-26
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
2026-10-30 15:28
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
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
142 words
A rotor comprising: a hub having radially extending tongues with undulating sides equally spaced around the outer periphery of said hub; a plurality of wedge-shaped permanent magnets having outwardly converging sides and radially disposed around the outer periphery of said hub; a plurality of inwardly converging wedge-shaped support members, one support member being affixed to each of the sides of said permanent magnets; one side of each of said support members having an undulating groove into which the tongues of said hub interlock; said sides of said magnets forming an angle within the range of 2 to 9 degrees with a plane parallel to a central radius through said magnet such that the magnets are locked in place after said rotor ceases to rotate and the magnets will not fracture due to excessive compressive forces applied to the sides of said magnets.
Claim 2
Dependent Claim
142 words
A rotor comprising: a hub having radially extending tongues with undulating sides equally spaced around the outer periphery of said hub; a plurality of wedge-shaped permanent magnets having outwardly converging sides and radially disposed around the outer periphery of said hub; a plurality of inwardly converging wedge-shaped support members, one support member being affixed to each of the sides of said permanent magnets; one side of each of said support members having an undulating groove into which the tongues of said hub interlock; said sides of said magnets forming an angle within the range of 2 to 9 degrees with a plane parallel to a central radius through said magnet such that the magnets are locked in place after said rotor ceases to rotate and the magnets will not fracture due to excessive compressive forces applied to the sides of said magnets.
Claim 3
Dependent Claim
142 words
A rotor comprising: a hub having radially extending tongues with undulating sides equally spaced around the outer periphery of said hub; a plurality of wedge-shaped permanent magnets having outwardly converging sides and radially disposed around the outer periphery of said hub; a plurality of inwardly converging wedge-shaped support members, one support member being affixed to each of the sides of said permanent magnets; one side of each of said support members having an undulating groove into which the tongues of said hub interlock; said sides of said magnets forming an angle within the range of 6 to 8 degrees with a plane parallel to a central radius through said magnet such that the magnets are locked in place after said rotor ceases to rotate and the magnets will not fracture due to excessive compressive forces applied to the sides of said magnets.
Claim 4
Dependent Claim
142 words
A rotor comprising: a hub having radially extending tongues with undulating sides equally spaced around the outer periphery of said hub; a plurality of wedge-shaped permanent magnets having outwardly converging sides and radially disposed around the outer periphery of said hub; a plurality of inwardly converging wedge-shaped support members, one support member being affixed to each of the sides of said permanent magnets; one side of each of said support members having an undulating groove into which the tongues of said hub interlock; said sides of said magnets forming an angle within the range of 6 to 8 degrees with a plane parallel to a central radius through said magnet such that the magnets are locked in place after said rotor ceases to rotate and the magnets will not fracture due to excessive compressive forces applied to the sides of said magnets.
Claim 5
Dependent Claim
191 words
A permanent magnet rotor comprising: a hub having a plurality of grooves with undulating sides equally spaced around the outer periphery of said hub; a plurality of magnet support member assemblies disposed around the outer periphery of said hub; each of said assemblies having a wedge-shaped permanent magnet with two outwardly converging sides and a first and second wedge-shaped support member with a first and second inwardly converging side; the first side of the support member having a flat portion which is affixed to the side of said permanent magnet and an undulating portion for interlocking with the grooves of said hub; the second side of the support member having at least one semi-circular groove; the semi-circular grooves of adjoining support members forming a circular hole for lightening and cooling the rotor; said sides of said magnets forming an angle within the range of 2 to 9 degrees with a plane parallel to a central radius through said magnet such that the magnets are locked in place after said rotor ceases to rotate and the magnets will not fracture due to excessive compressive forces applied to the sides of said magnets.
Claim 6
Dependent Claim
191 words
A permanent magnet rotor comprising: a hub having a plurality of grooves with undulating sides equally spaced around the outer periphery of said hub; a plurality of magnet support member assemblies disposed around the outer periphery of said hub; each of said assemblies having a wedge-shaped permanent magnet with two outwardly converging sides and a first and second wedge-shaped support member with a first and second inwardly converging side; the first side of the support member having a flat portion which is affixed to the side of said permanent magnet and an undulating portion for interlocking with the grooves of said hub; the second side of the support member having at least one semi-circular groove; the semi-circular grooves of adjoining support members forming a circular hole for lightening and cooling the rotor; said sides of said magnets forming an angle within the range of 2 to 9 degrees with a plane parallel to a central radius through said magnet such that the magnets are locked in place after said rotor ceases to rotate and the magnets will not fracture due to excessive compressive forces applied to the sides of said magnets.
Claim 7
Dependent Claim
191 words
A permanent magnet rotor comprising: a hub having a plurality of grooves with undulating sides equally spaced around the outer periphery of said hub; a plurality of magnet support member assemblies disposed around the outer periphery of said hub; each of said assemblies having a wedge-shaped permanent magnet with two outwardly converging sides and a first and second wedge-shaped support member with a first and second inwardly converging side; the first side of the support member having a flat portion which is affixed to the side of said permanent magnet and an undulating portion for interlocking with the grooves of said hub; the second side of the support member having at least one semi-circular groove; the semi-circular grooves of adjoining support members forming a circular hole for lightening and cooling the rotor; said sides of said magnets forming an angle within the range of 6 to 8 degrees with a plane parallel to a central radius through said magnet such that the magnets are locked in place after said rotor ceases to rotate and the magnets will not fracture due to excessive compressive forces applied to the sides of said magnets.
Claim 8
Dependent Claim
191 words
A permanent magnet rotor comprising: a hub having a plurality of grooves with undulating sides equally spaced around the outer periphery of said hub; a plurality of magnet support member assemblies disposed around the outer periphery of said hub; each of said assemblies having a wedge-shaped permanent magnet with two outwardly converging sides and a first and second wedge-shaped support member with a first and second inwardly converging side; the first side of the support member having a flat portion which is affixed to the side of said permanent magnet and an undulating portion for interlocking with the grooves of said hub; the second side of the support member having at least one semi-circular groove; the semi-circular grooves of adjoining support members forming a circular hole for lightening and cooling the rotor; said sides of said magnets forming an angle within the range of 6 to 8 degrees with a plane parallel to a central radius through said magnet such that the magnets are locked in place after said rotor ceases to rotate and the magnets will not fracture due to excessive compressive forces applied to the sides of said magnets.
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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) | 1987-04-24 | 1987-10-24 | 1988-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-24 | 1991-10-24 | 1992-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-24 | 1995-10-24 | 1996-04-24 | $7700.00 | Window Closed / Lapsed |