Motor
DC
First Claim
Patent Images
1. A motor comprising:
- a) a stator substantially encapsulated within a body of thermoplastic material; and
b) one or more solid parts used in the motor either within or near the body;
c) the thermoplastic material having a coefficient of linear thermal expansion such that the thermoplastic material contracts and expands at approximately the same rate as the one or more solid parts.
9 Assignments
Litigations
4 Petitions
Accused Products
Abstract
A motor has a stator substantially encapsulated within a body of thermoplastic material; and one or more solid parts used in the motor either within or near the body. The thermoplastic material has a coefficient of linear thermal expansion such that the thermoplastic material contracts and expands at approximately the same rate as the one or more solid parts. In another aspect, a motor for a hard disc drive comprises at least one conductor, at least one magnet, at least one bearing and a shaft; and a monolithic body of thermoplastic material substantially encapsulating the at least one conductor. The bearing is either encapsulated in the thermoplastic material, housed in a hollow cylindrical insert encapsulated in the thermoplastic material, or secured in a bore formed in the body of thermoplastic material. The motor has improved shock resistance.
141 Citations
16 Claims
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1. A motor comprising:
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a) a stator substantially encapsulated within a body of thermoplastic material; and b) one or more solid parts used in the motor either within or near the body; c) the thermoplastic material having a coefficient of linear thermal expansion such that the thermoplastic material contracts and expands at approximately the same rate as the one or more solid parts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A motor for a hard disc drive comprising:
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a) at least one conductor, at least one magnet, at least one bearing and a shaft; and b) a monolithic body of thermoplastic material substantially encapsulating the at least one bearing and at least one conductor. - View Dependent Claims (10)
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11. A motor for a hard disc drive comprising:
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a) at least one conductor, at least one magnet, at least one bearing, a hollow cylindrical insert, and a shaft; and b) a monolithic body of thermoplastic material substantially encapsulating the insert and the at least one conductor; c) the bearing being housed in the hollow cylindrical insert. - View Dependent Claims (12, 14)
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13. A motor for a hard disc drive comprising:
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a) at least one conductor, at least one magnet, at least one bearing and a shaft; and b) a monolithic body of thermoplastic material substantially encapsulating the at least one conductor; c) the body of thermoplastic material comprising a bore, and the bearing being secured in the bore.
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15. A motor with improved shock resistance comprising:
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a) an assembly comprising windings and laminations; and b) shock absorbing thermoplastic material substantially encapsulating the assembly; c) wherein the shock absorbing thermoplastic material has a vibration dampening such that the assembly has a reduction of harmonics in the range of 300–
2000 Hz of at least 5 decibels compared to an assembly with the same windings and laminations not being encapsulated. - View Dependent Claims (16)
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Specification
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Litigation Data
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Current AssigneeIntellectual Ventures II LLC (Intellectual Ventures LLC)
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Original AssigneeEncap Technologies, Inc. (Encap Holding Company)
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InventorsNeal, Griffith D.
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Primary Examiner(s)Waks, Joseph
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Application NumberUS11/439,733Publication NumberTime in Patent Office217 DaysField of SearchNoneUS Class Current310/43CPC Class CodesG11B 19/2009 Turntables, hubs and motors...H02K 1/04 characterised by the materi...H02K 1/146 consisting of a generally a...H02K 1/18 Means for mounting or faste...H02K 1/182 to stators axially facing t...H02K 1/185 to outer statorsH02K 1/187 to inner statorsH02K 11/00 Structural association of d...H02K 11/33 Drive circuits, e.g. power ...H02K 15/10 Applying solid insulation t...H02K 15/12 Impregnating, heating or dr...H02K 15/14 Casings; Enclosures; SupportsH02K 15/16 Centering rotors within the...H02K 21/16 having annular armature cor...H02K 21/22 with magnets rotating aroun...H02K 21/24 with magnets axially facing...H02K 2211/03 Machines characterised by c...H02K 3/38 around winding heads, equal...H02K 3/46 Fastening of windings on th...H02K 3/47 Air-gap windings, i.e. iron...View All
