Motor
DCFirst Claim
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