US3828212A — Assembly of alternator magnet blocks with engine …

Claim 1

Independent Claim 196 words

A rotor which can serve as the flywheel of a reciprocating engine and as the movable portion of a dynamoelectric machine and which comprises a body with a magnetically permeable annular wall and a plurality of block-like permanent magnets fixed to the body in circumferentially spaced relation to one another and defining a magent ring adjacent to the radially inner surface of said wall, said rotor being characterized by: A. each of the magnets being bonded to the body by a layer of bonding agent between its radially outer surface and the radially inner surface of said wall of the body; B. the magnets being steadied and protected by an annular cage of nonmagnetic material disposed radially inside said wall of the body and which comprises 1. a ring that overlies an axially facing surface of each magnet and 2. spacer portions that extend axially in one direction from said ring, between circumferentially adjacent magnets, said ring and spacer portions of the cage cooperating with inner body surfaces to define radially inwardly opening pockets into which the magnets are insertable during assembly and by which they are retained in position during curing of the bonding agent.

Claim 2

Dependent Claim 196 words

A rotor which can serve as the flywheel of a reciprocating engine and as the movable portion of a dynamoelectric machine and which comprises a body with a magnetically permeable annular wall and a plurality of block-like permanent magnets fixed to the body in circumferentially spaced relation to one another and defining a magent ring adjacent to the radially inner surface of said wall, said rotor being characterized by: A. each of the magnets being bonded to the body by a layer of bonding agent between its radially outer surface and the radially inner surface of said wall of the body; B. the magnets being steadied and protected by an annular cage of nonmagnetic material disposed radially inside said wall of the body and which comprises 1. a ring that overlies an axially facing surface of each magnet and 2. spacer portions that extend axially in one direction from said ring, between circumferentially adjacent magnets, said ring and spacer portions of the cage cooperating with inner body surfaces to define radially inwardly opening pockets into which the magnets are insertable during assembly and by which they are retained in position during curing of the bonding agent.

Claim 3

Dependent Claim 27 words

The rotor of claim 1, further characterized by: C. said spacer portions of the cage having their radially inner surfaces substantially flush with those of the magnets.

Claim 4

Dependent Claim 70 words

a plurality of spacer portions that extend from the ring in said axial direction, circumferentially adjacent spacer portions providing other surfaces of the pocket that oppose one another and face generally circumferentially, said other surfaces of the pocket being spaced at least as far apart at their radially inner edges as at their radially outer edges so that they can closely embrace opposite surfaces of a block received between them.

Claim 5

Dependent Claim 70 words

a plurality of spacer portions that extend from the ring in said axial direction, circumferentially adjacent spacer portions providing other surfaces of the pocket that oppose one another and face generally circumferentially, said other surfaces of the pocket being spaced at least as far apart at their radially inner edges as at their radially outer edges so that they can closely embrace opposite surfaces of a block received between them.

Claim 6

Dependent Claim 56 words

spacer portions that extend axially in one direction from said ring, between circumferentially adjacent magnets, said ring and spacer portions of the cage cooperating with inner body surfaces to define radially inwardly opening pockets into which the magnets are insertable during assembly and by which they are retained in position during curing of the bonding agent.

Claim 7

Dependent Claim 56 words

spacer portions that extend axially in one direction from said ring, between circumferentially adjacent magnets, said ring and spacer portions of the cage cooperating with inner body surfaces to define radially inwardly opening pockets into which the magnets are insertable during assembly and by which they are retained in position during curing of the bonding agent.

Claim 8

Dependent Claim 138 words

The rotor of claim 1 wherein said body also comprises an end wall which cooperates with said annular wall to define a rearwardly opening well, and wherein said ring of the cage overlies the rear faces of the magnets and the magnets are spaced to the rear of said end wall of the body, further characterized by: C. the cage comprising a second ring connected with the front ends of the spacer portions and disposed between the front surfaces of the magnets and sAid end wall of the body to establish the spacing between the magnets and said end wall and to seal off the space thus established; and D. the radially inner surface of said second ring and the radially inner surfaces of the spacer portions being substantially flush with the radially inner surfaces of the magnets.

Claim 9

Dependent Claim 132 words

The rotor of claim 1 wherein the body has a circumferential ledge adjacent to its said annular wall that faces axially toward said ring of the cage and which is flatwise overlain by the opposite axially facing surface of each magnet, further characterized by: C. each of said spacer portions comprising a wall portion with a radially outer surface which is curved to mate with the radially inner surface of said annular wall of the body and which is bonded to the latter by said bonding agent; and D. that edge portion of each of said spacer portion walls which is adjacent to the ledge being chamfered to wipingly distribute bonding agent evenly between said spacer portion wall and said annular wall as the cage is inserted axially into the annular wall.

Claim 10

Dependent Claim 63 words

The rotor of claim 4, further characterized by: E. each of said wall portions being relatively thin in the direction radially of the rotor, to be slightly flexible; and F. each spacer portion further comprising a second wall portion spaced radially inwardly from the first mentioned wall portion and with which the first mentioned wall portion is connected substantially only through said ring.

Claim 11

Dependent Claim 145 words

In combination: A. a rotor body which can serve as the flywheel of a reciprocating engine and which has an end wall and a magnetically permeable annular wall that together define a rearwardly opening well; and B. means for establishing a plurality of permanent magnet blocks in radially inward proximity to the annular wall and in circumferentially spaced relationship to one another, to provide for bonding the blocks to the radially inner surface of said annular wall, as by means of an epoxy, so that the blocks will form a magnet ring for a dynamoelectric machine such as an alternator, the last mentioned means comprising an annular cage of nonmagnetic material received within the well and cooperating with the rotor body to define a plurality of radially inwardly opening pockets, into each of which one of the blocks is radially outwardly insertable, said cage comprising

Claim 12

Dependent Claim 145 words

In combination: A. a rotor body which can serve as the flywheel of a reciprocating engine and which has an end wall and a magnetically permeable annular wall that together define a rearwardly opening well; and B. means for establishing a plurality of permanent magnet blocks in radially inward proximity to the annular wall and in circumferentially spaced relationship to one another, to provide for bonding the blocks to the radially inner surface of said annular wall, as by means of an epoxy, so that the blocks will form a magnet ring for a dynamoelectric machine such as an alternator, the last mentioned means comprising an annular cage of nonmagnetic material received within the well and cooperating with the rotor body to define a plurality of radially inwardly opening pockets, into each of which one of the blocks is radially outwardly insertable, said cage comprising

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1977-08-05	1978-02-04	1978-08-06	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1981-08-05	1982-02-04	1982-08-06	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1985-08-05	1986-02-04	1986-08-06	$7700.00	Window Closed / Lapsed

Assembly of alternator magnet blocks with engine flywheel

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