Patent US3783266A successfully refreshed from Google Patents.
US3783266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scanning mechanism for film developer, and the like
Assignee: Individual
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Filing: 1972-12-14
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Granted: 1974-01-01
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Expires: 1992-12-14
Abstract
Abstract A light scanning mechanism for use in conjunction with automatic X-ray film developing apparatus, and the like. The mechanism permits a red beam to be repeatedly scanned across the film being developed in order to provide appropriate control signals so that the developing process may be stopped automatically when a desired density has been reached. The scanning mechanism includes a resilient member, such as a leaf spring, which couples the source of the red beam of light to a motor drive shaft. The motor is intermittently energized to cause the red beam to be cyclically moved in a random spiral scanning path.
Inventors
- 👤 D Gregg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:49
CPC Classifications
G; G03; G03D; G03D13/00; G03D13/007
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
122 words
A scanning mechanism for a photographic film developing apparatus, or the like, comprising: a drive motor having a drive shaft; a bendable resilient member having one end mounted on said drive shaft; and weight means including a radiation source mounted on the other end of said resilient member in position to cause said resilient member to bend increasingly upon acceleration of said drive shaft and to bend decreasingly upon deceleration of said drive shaft, said radiation source being displaced radially of the axis of rotation of said drive shaft by increasing amounts as said drive shaft rotates at accelerated speeds and by decreasing amounts as said drive shaft rotates at decelerated speeds so that said source is driven along a conical path.
Claim 2
Dependent Claim
122 words
A scanning mechanism for a photographic film developing apparatus, or the like, comprising: a drive motor having a drive shaft; a bendable resilient member having one end mounted on said drive shaft; and weight means including a radiation source mounted on the other end of said resilient member in position to cause said resilient member to bend increasingly upon acceleration of said drive shaft and to bend decreasingly upon deceleration of said drive shaft, said radiation source being displaced radially of the axis of rotation of said drive shaft by increasing amounts as said drive shaft rotates at accelerated speeds and by decreasing amounts as said drive shaft rotates at decelerated speeds so that said source is driven along a conical path.
Claim 3
Dependent Claim
18 words
The scanning mechanism defined in claim 1, in which said resilient member is configured as a leaf spring.
Claim 4
Dependent Claim
17 words
The scanning mechanism defined in claim 1, in which said radiation source is a red light source.
Claim 5
Dependent Claim
37 words
A scanning mechanism as defined in claim 1, and which includes a power interrupter circuit connected to said motor for periodically interrupting the power to the motor for causing cyclic variations in the speed of the motor.
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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |