US3554106A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shutter device
Assignee: Actron Industries Inc
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Filing: 1967-08-28
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Granted: 1971-01-12
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Expires: 1987-08-28
Abstract
Abstract Focal plane shutter apparatus having a shutter slit which is adjustable from a remote location. A pair of shutter curtains is utilized to form the shutter slit, and a transmission mechanism is controlled to drive the curtains simultaneously at the same speed and alternatively at different relative speeds.
Inventors
- 👤 Aaron Baumgarten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:21
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08; G03B9/28; G03B9/32; G03B9/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A camera shutter comprising the combination of: a. a curtain transport; b. a first curtain mounted on the transport; c. a second curtain mounted on the transport adjacent to said first curtain, said curtains having a pair of juxtaposed ends positioned adjacent to each other to form an opening therebetween, the size of said opening being determined by the relative positions of said curtains: d. drive means including a single driving mechanism and an epicyclic train; e. a pair of inputs to said train; f. a pair of outputs to said train, one of said outputs being coupled to one of said curtains and the other of said outputs being coupled to one of said curtains and the other of said outputs being coupled to the other of said curtains; g. first drive means coupled to one of said inputs for simultaneously driving both of said curtains in the same direction; and h. second drive means coupled to the other of said inputs for driving at least one of said curtains relative to the other of said curtains.
Claim 2
Dependent Claim
178 words
A camera shutter comprising the combination of: a. a curtain transport; b. a first curtain mounted on the transport; c. a second curtain mounted on the transport adjacent to said first curtain, said curtains having a pair of juxtaposed ends positioned adjacent to each other to form an opening therebetween, the size of said opening being determined by the relative positions of said curtains: d. drive means including a single driving mechanism and an epicyclic train; e. a pair of inputs to said train; f. a pair of outputs to said train, one of said outputs being coupled to one of said curtains and the other of said outputs being coupled to one of said curtains and the other of said outputs being coupled to the other of said curtains; g. first drive means coupled to one of said inputs for simultaneously driving both of said curtains in the same direction; and h. second drive means coupled to the other of said inputs for driving at least one of said curtains relative to the other of said curtains.
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |