US4024552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetically driven optical blade
Assignee: Fujifilm Holdings Corp
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Filing: 1976-03-16
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Granted: 1977-05-17
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Expires: 1996-03-16
Abstract
Abstract A thin electromagnetic coil sheet is sealed in a plastic blade. The coil sheet is composed of a plastic film substrate and a photo-etched coil deposited thereon. The coil sheet is sealed in the plastic blade at the middle of the thickness thereof.
Inventors
- 👤 Toshihiro Kondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:22
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08; G03B9/36; G03B9/40; G02; G02B; G02B5/00; G02B5/005
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
31 words
An optical blade which is electromagnetically driven comprising an opaque plastic sheet member and an electromagnetic coil sheet sealed therein, said coil sheet extending in parallel to the plastic sheet member.
Claim 2
Dependent Claim
31 words
An optical blade which is electromagnetically driven comprising an opaque plastic sheet member and an electromagnetic coil sheet sealed therein, said coil sheet extending in parallel to the plastic sheet member.
Claim 3
Dependent Claim
26 words
An optical blade as defined in claim 1 wherein said electromagnetic coil sheet is located at the middle of the thickness of said plastic sheet member.
Claim 4
Dependent Claim
23 words
An optical blade as defined in claim 1 wherein said electromagnetic coil comprises a plastic film substrate and a photo-etched coil deposited thereon.
Claim 5
Dependent Claim
22 words
An optical blade as defined in claim 1 wherein said plastic sheet member comprises a plastic material and black pigment mixed therewith.
Claim 6
Dependent Claim
15 words
An optical blade as defined in claim 4 wherein said plastic material is thermoplastic resin.
Claim 7
Dependent Claim
15 words
An optical blade as defined in claim 4 wherein said plastic material is thermosetting resin.
Claim 8
Dependent Claim
15 words
An optical blade as defined in claim 4 wherein said black pigment is carbon black.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-16 | 1980-11-15 | 1981-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-16 | 1984-11-15 | 1985-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-16 | 1988-11-15 | 1989-05-17 | $7700.00 | Window Closed / Lapsed |