US4734726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for moving a lens
Assignee: Ricoh Co Ltd
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Filing: 1987-04-16
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Granted: 1988-03-29
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Expires: 2007-04-16
Abstract
Abstract An apparatus for moving a lens between first and second positions, comprising; a support member means for supporting said lens, an electric motor connected to said support member means for moving said support member, a control circuit means connected to said motor for supplying a first current to said motor to move said support member means from said first position to said second position and vice versa and a second current to said motor to hold said support member means at least one of said first position and second position, said second current being smaller than said first current.
Inventors
- 👤 Akira Takahashi
- 👤 Saburo Sasaki
- 👤 Koichi Nishi
- 👤 Shinichiro Koshiishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:55
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/02; G03B17/04; G03B3/00; G03B3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
An apparatus for moving a lens between first and second positions, comprising; a support member means for supporting said lens, an electric motor connected to said support member means for moving said support member, a control circuit means connected to said motor for suppling a first current to said motor to move said support member means from said first position to said second position and vice versa and a second current to said motor to hold said support member means at least one of said first position and second position, said second current being smaller than said first current.
Claim 2
Independent Claim
99 words
An apparatus for moving a lens between first and second positions, comprising; a support member means for supporting said lens, an electric motor connected to said support member means for moving said support member, a control circuit means connected to said motor for suppling a first current to said motor to move said support member means from said first position to said second position and vice versa and a second current to said motor to hold said support member means at least one of said first position and second position, said second current being smaller than said first current.
References Cited (Backward Citations)
US4601563A
Cited
US4639111A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-29 | 1991-09-28 | 1992-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-29 | 1995-09-28 | 1996-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-29 | 1999-09-28 | 2000-03-29 | $7700.00 | Window Closed / Lapsed |