US3663850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Field means for a dynamoelectric machine, magnet preassembly for use therein
Assignee: RE Phelon Co Inc
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Filing: 1970-08-03
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Granted: 1972-05-16
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Expires: 1990-08-03
Abstract
Abstract The rotor of an electric alternator includes permanent magnet material for establishing a magnetic field which rotates with the rotor. The permanent magnet material may be in the form of a single ring of such material magnetically charged to provide a plurality of angularly spaced magnetic poles. The magnetic material may also be in the form of a plurality of separate magnets arranged in a generally end face to end face, spaced relationship to form an annular ring. The magnetic material is a ceramic material and the magnets directly provide pole faces for cooperation with the stator poles and are radially magnetically charged to include more than one magnetic pole on each pole face. When a plurality of magnets are used to form the magnet ring a compressible resilient spacer or spring member is placed between two magnets to hold them in assembly with a temporary shipping band or with the rotor part in which they are finally installed. In assembling a magnet ring made of a plurality of magnets, a deformable insert may be placed between two adjacent magnets and then deformed to enlarge the gap in which it is received, thereby compressing the spring member. If the magnets are first formed into a preassembly with a shipping band for later assembly with a rotor part, and if a deformable insert is used to control the compression of the spring member, the deformable insert in forming the preassembly is preferably deformed only to a degree sufficient to hold the preassembly in assembly with only a degree of tightness sufficient to withstand normal handling, and after the magnets are inserted in the final rotor part and the shipping band removed, the deformable insert is deformed to a further extent to hold the magnets in assembly with the rotor part with a greater degree of tightness.
Inventors
- 👤 Russell E Phelon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:25
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/27; H02K1/2786; H02K1/2787; H02K1/2789; H02K1/2791
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
197 words
A magnet preassembly for use in making a part of a dynamoelectric machine, said magnet preassembly comprising: an annular arrangement of generally arcuate permanent magnets having juxtaposed end faces forming at least one gap around such annular arrangement, an annular circular band surrounding said magnets, and a spring member held in a resiliently deformed state in said gap and operable to apply continual pressure against the end faces of the magnets defining said gap so as to tend to spread said latter magnets apart from one another and to expand said annular arrangement of magnets to cause them to be pressed tightly against said band into a self-sustaining assembly, said spring member being a generally tubular member of generally annular cross-section having a slot therein extending the entire length thereof and defining two spaced edges extending longitudinally of said member, and said spring member being arranged in said gap with said slot oriented generally parallel to the axis of said circular band and with said slot located intermediate said end faces defining said gap so that the forces applied to said spring member by said end faces tend to move said two spaced edges toward one another.
Claim 2
Dependent Claim
197 words
A magnet preassembly for use in making a part of a dynamoelectric machine, said magnet preassembly comprising: an annular arrangement of generally arcuate permanent magnets having juxtaposed end faces forming at least one gap around such annular arrangement, an annular circular band surrounding said magnets, and a spring member held in a resiliently deformed state in said gap and operable to apply continual pressure against the end faces of the magnets defining said gap so as to tend to spread said latter magnets apart from one another and to expand said annular arrangement of magnets to cause them to be pressed tightly against said band into a self-sustaining assembly, said spring member being a generally tubular member of generally annular cross-section having a slot therein extending the entire length thereof and defining two spaced edges extending longitudinally of said member, and said spring member being arranged in said gap with said slot oriented generally parallel to the axis of said circular band and with said slot located intermediate said end faces defining said gap so that the forces applied to said spring member by said end faces tend to move said two spaced edges toward one another.
Claim 3
Dependent Claim
163 words
A magnet preassembly for use in making a part of a dynamoelectric Machine, said magnet preassembly comprising: an annular arrangement of generally arcuate permanent magnets having juxtaposed end faces forming gaps around such annular arrangement, an annular circular band surrounding said magnets, and a plurality of inserts each received in a respective one of said gaps, said inserts including at least one spring member held in a resiliently deformed state in its gap and operable to apply continual pressure against the end faces of the magnets defining its gap so as to tend to spread said magnets apart from one another and to expand said annular arrangement of magnets to cause them to be pressed tightly against said band, said plurality of inserts also including at least one insert which is non-resiliently deformable in such a manner as to increase its dimension circumferentially of said annular arrangement of magnets and to thereby spread apart the end faces of the magnets defining its gap.
Claim 4
Dependent Claim
163 words
A magnet preassembly for use in making a part of a dynamoelectric Machine, said magnet preassembly comprising: an annular arrangement of generally arcuate permanent magnets having juxtaposed end faces forming gaps around such annular arrangement, an annular circular band surrounding said magnets, and a plurality of inserts each received in a respective one of said gaps, said inserts including at least one spring member held in a resiliently deformed state in its gap and operable to apply continual pressure against the end faces of the magnets defining its gap so as to tend to spread said magnets apart from one another and to expand said annular arrangement of magnets to cause them to be pressed tightly against said band, said plurality of inserts also including at least one insert which is non-resiliently deformable in such a manner as to increase its dimension circumferentially of said annular arrangement of magnets and to thereby spread apart the end faces of the magnets defining its gap.
Claim 5
Dependent Claim
31 words
A magnet preassembly as defined in claim 1 further characterized by said deformable insert being a tubular member having its axis oriented generally parallel to the axis of said circular band.
Claim 6
Dependent Claim
42 words
A magnet preassembly as defined in claim 2 further characterized by said at least one deformable insert comprising a generally tubular member having a generally oval cross-sectional shape and having its axis oriented generally parallel to the axis of said circular band.
Claim 7
Dependent Claim
25 words
A magnet preassembly as defined in claim 2 further characterized by said plurality of inserts also including at least one other insert which is non-deformable.
Claim 8
Dependent Claim
151 words
A magnet preassembly for use in making a part of a dynamoelectric machine, said magnet preassembly comprising: an annular arrangement of generally arcuate permanent magnets having juxtaposed end faces forming gaps around such annular arrangement, an annular circular band surrounding said magnets, and a plurality of inserts each received in a corresponding one of said gaps, said inserts including at least one biasing member held in a resiliently deformed state in its gap and operable to apply continual pressure against the end faces of the magnets defining its gap so as to tend to spread said magnets apart from one another and to expand said annular arrangement of magnets to cause them to be pressed tightly against said band, said plurality of inserts including at least one insert which is deformable to increase its dimension circumferentially of said annular arrangement of magnets, and at least one other insert which is non-deformable.
Claim 9
Dependent Claim
151 words
A magnet preassembly for use in making a part of a dynamoelectric machine, said magnet preassembly comprising: an annular arrangement of generally arcuate permanent magnets having juxtaposed end faces forming gaps around such annular arrangement, an annular circular band surrounding said magnets, and a plurality of inserts each received in a corresponding one of said gaps, said inserts including at least one biasing member held in a resiliently deformed state in its gap and operable to apply continual pressure against the end faces of the magnets defining its gap so as to tend to spread said magnets apart from one another and to expand said annular arrangement of magnets to cause them to be pressed tightly against said band, said plurality of inserts including at least one insert which is deformable to increase its dimension circumferentially of said annular arrangement of magnets, and at least one other insert which is non-deformable.
Claim 10
Dependent Claim
215 words
A field means for a dynamoelectric machine having a rotor which rotor includes a carrier adapted for rotation about a given axis and having an axially extending rim surrounding said axis, said field means comprising a plurality of generally arcuately shaped permanent magnets received within said rim and arranged in generally end face to end face relationship to provide pairs of adjacent end faces, at least one of said pairs of adjacent end faces being spaced from one another to form a gap, and a spring member received in said gap and held in a resiliently deformed state so as to exert a spreading force on the magnets defining said gap and to consequently urge all of said magnets radially outwardly into tight engagement with said rim, said spring member being a generally tubular member of generally annular cross-section having a slot therein extending the entire length thereof and defining two spaced edges extending longitudinally of said member, and said spring member being arranged in said gap with said slot oriented generally parallel to the axis of said circular band and with said slot located intermediate said end faces defining said gap so that the forces applied to said spring member by said end faces tend to move said two spaced edges toward one another.
Claim 11
Dependent Claim
215 words
A field means for a dynamoelectric machine having a rotor which rotor includes a carrier adapted for rotation about a given axis and having an axially extending rim surrounding said axis, said field means comprising a plurality of generally arcuately shaped permanent magnets received within said rim and arranged in generally end face to end face relationship to provide pairs of adjacent end faces, at least one of said pairs of adjacent end faces being spaced from one another to form a gap, and a spring member received in said gap and held in a resiliently deformed state so as to exert a spreading force on the magnets defining said gap and to consequently urge all of said magnets radially outwardly into tight engagement with said rim, said spring member being a generally tubular member of generally annular cross-section having a slot therein extending the entire length thereof and defining two spaced edges extending longitudinally of said member, and said spring member being arranged in said gap with said slot oriented generally parallel to the axis of said circular band and with said slot located intermediate said end faces defining said gap so that the forces applied to said spring member by said end faces tend to move said two spaced edges toward one another.
Claim 12
Dependent Claim
89 words
A field means as defined in claim 7 further characterized by said rim including an undercut lip located axially outboard of said magnets and extending radially inwardly beyond the radially outer faces of said magnets So as to be engageable with said magnets to prevent their displacement axially outwardly of said rim, and said spring member having a portion extending radially outwardly beyond the radially inner limit of said undercut lip so as to be engageable with said lip to prevent it from being displaced axially of said rim.
Claim 13
Dependent Claim
186 words
A field means for an electrical generator for use with an internal combustion engine having a flywheel including an axially extending ring of magnetic material, said field means comprising a plurality of radially charged magnets arranged in an annular series within said ring of magnetic material and each having a radially inwardly directed pole face and two tangentially directed end faces, a compressible resilient spacer between the two adjacent end faces of two adjacent ones of said magnets, and means for providing a controlled spacing between said two adjacent end faces to control the compression of said resilient spacer and to thereby produce a controlled tangentially directed force exerted on said two adjacent end faces by said resilient spacer, said means for providing a controlled spacing between said two adjacent end faces of said two adjacent magnets comprising a spacer located between the two adjacent end faces of two other adjacent ones of said magnets which latter spacer is non-resiliently deformable to increase its dimension circumferentially of said rim and to thereby increase the spacing between said two adjacent end faces between which it is received.
Claim 14
Dependent Claim
186 words
A field means for an electrical generator for use with an internal combustion engine having a flywheel including an axially extending ring of magnetic material, said field means comprising a plurality of radially charged magnets arranged in an annular series within said ring of magnetic material and each having a radially inwardly directed pole face and two tangentially directed end faces, a compressible resilient spacer between the two adjacent end faces of two adjacent ones of said magnets, and means for providing a controlled spacing between said two adjacent end faces to control the compression of said resilient spacer and to thereby produce a controlled tangentially directed force exerted on said two adjacent end faces by said resilient spacer, said means for providing a controlled spacing between said two adjacent end faces of said two adjacent magnets comprising a spacer located between the two adjacent end faces of two other adjacent ones of said magnets which latter spacer is non-resiliently deformable to increase its dimension circumferentially of said rim and to thereby increase the spacing between said two adjacent end faces between which it is received.
Claim 15
Dependent Claim
23 words
A field means as defined in claim 9 further characterized by said non-resiliently deformable spacer being a tubular member of generally oval cross-section.
Claim 16
Dependent Claim
184 words
A field means for a dynamoelectric machine comprising a carrier having an inwardly facing annular surface, a plurality of generally arcuately shaped permanent magnets received within said annular surface of said carrier arranged in an annular array in generally end face to end face spaced relationship to provide pairs of adjacent end faces forming a plurality of gaps in said annular array, and a plurality of inserts each received in a respective one of said gaps, said inserts including at least one spring member held in a resiliently deformed state in its gap and operable to apply continual pressure against the end faces of the magnets defining its gap so as to tend to spread said magnets apart from one another and to expand said annular arrangement of magnets to cause them to be pressed tightly against said annular surface, said plurality of inserts also including at least one insert which is non-resiliently deformable in such a manner as to increase its dimension circumferentially of said annular arrangement of magnets and to thereby spread apart the end faces of the magnets defining its gap.
Claim 17
Dependent Claim
184 words
A field means for a dynamoelectric machine comprising a carrier having an inwardly facing annular surface, a plurality of generally arcuately shaped permanent magnets received within said annular surface of said carrier arranged in an annular array in generally end face to end face spaced relationship to provide pairs of adjacent end faces forming a plurality of gaps in said annular array, and a plurality of inserts each received in a respective one of said gaps, said inserts including at least one spring member held in a resiliently deformed state in its gap and operable to apply continual pressure against the end faces of the magnets defining its gap so as to tend to spread said magnets apart from one another and to expand said annular arrangement of magnets to cause them to be pressed tightly against said annular surface, said plurality of inserts also including at least one insert which is non-resiliently deformable in such a manner as to increase its dimension circumferentially of said annular arrangement of magnets and to thereby spread apart the end faces of the magnets defining its gap.
Claim 18
Dependent Claim
31 words
A field means as defined in claim 11 further characterized by said deformable insert being a tubular member having its axis oriented generally parallel to the axis of said annular surface.
Claim 19
Dependent Claim
19 words
A field means as defined in claim 12 further characterized by said tubular member having a generally oval cross-section.
Claim 20
Dependent Claim
26 words
A field means as defined in claim 11 further characterized by said plurality of inserts also including at least one other insert which is relatively non-deformable.
Claim 21
Dependent Claim
280 words
A field means for a dynamoelectric machine having means defining a carrier with an inwardly facing annular surface, a plurality of generally arcuately shaped permanent magnets received within said annular surface of said carrier and arranged in an annular array in generally end face to end face relationship to provide pairs of adjacent end faces, one of said pairs of adjacent end faces being spaced from one another to form a gap, and a spring member received in said gap and held in a resiliently deformed state so as to exert a spreading force on the magnets defining said gap and to consequently urge all of said magnets radially outwardly into tight engagement with said rim, said spring member being a generally tubular member of generally aNnular cross-section having a slot therein extending the entire length thereof and defining two spaced edges extending longitudinally of said member, and said spring member being arranged in said gap with said slot oriented generally parallel to the axis of said annular surface and with said slot located intermediate said end faces defining said gap so that the forces applied to said spring member by said end faces tend to move said two spaced edges toward one another with the result that the spacing between said edges provides a visual indication of the force exerted by said end faces on said spring member, at least one other of said pairs of adjacent end faces being spaced from one another to form a second gap, and means in said second gap for providing a controlled spacing between the two end faces forming said second gap and for thereby controlling the compression of said spring member.
Claim 22
Dependent Claim
280 words
A field means for a dynamoelectric machine having means defining a carrier with an inwardly facing annular surface, a plurality of generally arcuately shaped permanent magnets received within said annular surface of said carrier and arranged in an annular array in generally end face to end face relationship to provide pairs of adjacent end faces, one of said pairs of adjacent end faces being spaced from one another to form a gap, and a spring member received in said gap and held in a resiliently deformed state so as to exert a spreading force on the magnets defining said gap and to consequently urge all of said magnets radially outwardly into tight engagement with said rim, said spring member being a generally tubular member of generally aNnular cross-section having a slot therein extending the entire length thereof and defining two spaced edges extending longitudinally of said member, and said spring member being arranged in said gap with said slot oriented generally parallel to the axis of said annular surface and with said slot located intermediate said end faces defining said gap so that the forces applied to said spring member by said end faces tend to move said two spaced edges toward one another with the result that the spacing between said edges provides a visual indication of the force exerted by said end faces on said spring member, at least one other of said pairs of adjacent end faces being spaced from one another to form a second gap, and means in said second gap for providing a controlled spacing between the two end faces forming said second gap and for thereby controlling the compression of said spring member.
Claim 23
Dependent Claim
51 words
A field means as defined in claim 15 further characterized by said means in said second gap being a spacer which is non-resiliently deformable to increase its dimension circumferentially of said annular surface to thereby increase the spacing between the two end faces forming the gap in which it is received.
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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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |