US4831480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carriage apparatus for signal recording and regenerating equipment
Assignee: Polyplastics Co Ltd
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Filing: 1987-11-23
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Granted: 1989-05-16
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Expires: 2007-11-23
Abstract
Abstract A carriage apparatus which comprises a magnetic head and a carriage comprising a liquid crystal polyester being thermotropic and being capable of forming the anisotropic phase in the molten state and an inorganic filler.
Inventors
- 👤 Yasuyuki Takeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:46
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/02; G; G11; G11B; G11B5/00; G11B5/48; G11B5/4806; G11B5/4833; G11B21/00; G11B21/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
45 words
A carriage apparatus supporting a magnetic head for recording and regenerating a signal on a magnetic medium, which apparatus comprises a solid polyester composition containing 0.5 to 70% of an inorganic filler, said polyester being capable of forming the anisotropic phase in the molten state.
Claim 2
Dependent Claim
45 words
A carriage apparatus supporting a magnetic head for recording and regenerating a signal on a magnetic medium, which apparatus comprises a solid polyester composition containing 0.5 to 70% of an inorganic filler, said polyester being capable of forming the anisotropic phase in the molten state.
Claim 3
Dependent Claim
22 words
The carriage apparatus as claimed in claim 1, in which the solid composition contains a mixture of two or more inorganic fillers.
Claim 4
Dependent Claim
23 words
The carriage apparatus as claimed in claim 1, in which the inorganic filler is a fibrous material having a high modulus of elasticity.
Claim 5
Dependent Claim
49 words
The carriage apparatus as claimed in claim 3, in which the fibrous material is a glass fiber blended into the polyester in an amount of 20 to 50% by weight of the solid polyester composition so as to achieve a coefficient of thermal expansion similar to that of aluminum.
Claim 6
Dependent Claim
49 words
The carriage apparatus as claimed in claim 3, in which the fibrous material is a carbon fiber blended into the polyester in an amount of 20 to 30% by weight of the solid polyester composition so as to achieve a coefficient of thermal expansion similar to that of steel.
References Cited (Backward Citations)
US4414778A
Cited
US4418371A
Cited
US4669014A
Cited
US4524400A
Cited
US4658315A
Cited
US4704641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-15 | 1992-11-14 | 1993-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-15 | 1996-11-14 | 1997-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-15 | 2000-11-14 | 2001-05-16 | $7700.00 | Window Closed / Lapsed |