US Patent No: 6,726,381
Number of patents in Portfolio can not be more than 2000
Focal-plane shutter for cameras
Stats
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Apr 27, 2004
Issued date -
May 7, 2002
filing date -
10/139,245
serial no -
In Force
status
Importance
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Abstract
A focal-plane shutter for a camera is provided with two blade chambers into which a space between two base plates is partitioned by an intermediate plate having an aperture for exposure. A shutter blade group placed in each of the blade chambers is constructed with a plurality of arms whose ends are pivotally mounted to one of the two base plates on the side of the aperture and at least one blade pivotally supported by the arms through individual joint shanks so that working paths of the joint shanks does not run inside the apertures. A wall is provided on at least one of the two base plates so as to project toward the blade chamber side, along the edge of the aperture, and has an inclined face directed toward the aperture of an opposite base plate.
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First Claim
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International Classification(s)
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- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,381,199 Shutter for camera | 1 | 1993 | |
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| 4,926,202 Shutter for use in camera | 8 | 1988 | |
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| 5,019,847 Shutter device | 3 | 1990 | |
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| 4,814,807 Focal-plane shutter base | 6 | 1987 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 27, 2015 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |