US3593228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for selecting and operating contact screens in a photomechanical (process) camera
Assignee: Dainippon Screen Manufacturing Co Ltd
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Filing: 1968-11-18
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Granted: 1971-07-13
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Expires: 1988-11-18
Abstract
Abstract Device for Selecting and Positioning Contact Screens in a Photomechanical (Process) Camera wherein the screens are received in the upper section of the rear case of the camera and selectively positioned along an axis vertically displaced from the optical axis.
Inventors
- 👤 Yoshio Miyauchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:27
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/58; G03B27/60; G03F; G03F9/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
320 words
A device for selecting and positioning contact screens used in combination with a process camera, a forward and backward moving assembly having a plurality of screens suspended in parallel therefrom, a first drive means for moving said assembly with respect to the film holder of said camera, and a second drive means for moving the selected screen up and down in a vertical slot thereby enabling the selected screen to be lowered into an aligned position in front of said film holder, wherein the device comprises: 1. a frame disposed upon said moving assembly having a plurality of first electrically conducting means whose longitudinal axes are parallel to the direction of motion of said assembly, where each of said first conducting means has a nonconducting gap disposed along said longitudinal axis; 2. a plurality of second electrically conducting means in juxtaposition with said frame, each of said second conducting means being in contact with one of said first conducting means along its longitudinal axis; 3. a plurality of switching means, each one of which is associated with the selection of one of said screens, where one terminal of each of said switching means is connected to one side of said first drive means and a second terminal of which is electrically connected to one of said second conducting means, whereby the selection of one of said switching means energizes said first drive means through the electrical contact made between said second conducting means and said first conducting means in juxtaposition with said second conducting means, thereby causing said first drive means to move said assembly and said frame until said second conducting means comes into contact with said nonconducting gap, thereby breaking the electrical contact and causing the assembly to stop at a position which enables said desired screen associated with said selected switching means to be moved up and down in said vertical slot by said second drive means.
Claim 2
Independent Claim
320 words
A device for selecting and positioning contact screens used in combination with a process camera, a forward and backward moving assembly having a plurality of screens suspended in parallel therefrom, a first drive means for moving said assembly with respect to the film holder of said camera, and a second drive means for moving the selected screen up and down in a vertical slot thereby enabling the selected screen to be lowered into an aligned position in front of said film holder, wherein the device comprises: 1. a frame disposed upon said moving assembly having a plurality of first electrically conducting means whose longitudinal axes are parallel to the direction of motion of said assembly, where each of said first conducting means has a nonconducting gap disposed along said longitudinal axis; 2. a plurality of second electrically conducting means in juxtaposition with said frame, each of said second conducting means being in contact with one of said first conducting means along its longitudinal axis; 3. a plurality of switching means, each one of which is associated with the selection of one of said screens, where one terminal of each of said switching means is connected to one side of said first drive means and a second terminal of which is electrically connected to one of said second conducting means, whereby the selection of one of said switching means energizes said first drive means through the electrical contact made between said second conducting means and said first conducting means in juxtaposition with said second conducting means, thereby causing said first drive means to move said assembly and said frame until said second conducting means comes into contact with said nonconducting gap, thereby breaking the electrical contact and causing the assembly to stop at a position which enables said desired screen associated with said selected switching means to be moved up and down in said vertical slot by said second drive means.
Claim 3
Dependent Claim
32 words
a plurality of second electrically conducting means in juxtaposition with said frame, each of said second conducting means being in contact with one of said first conducting means along its longitudinal axis;
Claim 4
Dependent Claim
32 words
a plurality of second electrically conducting means in juxtaposition with said frame, each of said second conducting means being in contact with one of said first conducting means along its longitudinal axis;
Claim 5
Dependent Claim
22 words
The device of claim 1 wherein said first electrically conducting means are metallic surfaces; and said second electrically conducting means are brushes.
Claim 6
Dependent Claim
23 words
The device of claim 1 wherein said first electrically conducting means are metallic surfaces; and said second electrically conducting means are rotatable contacts.
Claim 7
Dependent Claim
155 words
a plurality of switching means, each one of which is associated with the selection of one of said screens, where one terminal of each of said switching means is connected to one side of said first drive means and a second terminal of which is electrically connected to one of said second conducting means, whereby the selection of one of said switching means energizes said first drive means through the electrical contact made between said second conducting means and said first conducting means in juxtaposition with said second conducting means, thereby causing said first drive means to move said assembly and said frame until said second conducting means comes into contact with said nonconducting gap, thereby breaking the electrical contact and causing the assembly to stop at a position which enables said desired screen associated with said selected switching means to be moved up and down in said vertical slot by said second drive means.
Claim 8
Dependent Claim
155 words
a plurality of switching means, each one of which is associated with the selection of one of said screens, where one terminal of each of said switching means is connected to one side of said first drive means and a second terminal of which is electrically connected to one of said second conducting means, whereby the selection of one of said switching means energizes said first drive means through the electrical contact made between said second conducting means and said first conducting means in juxtaposition with said second conducting means, thereby causing said first drive means to move said assembly and said frame until said second conducting means comes into contact with said nonconducting gap, thereby breaking the electrical contact and causing the assembly to stop at a position which enables said desired screen associated with said selected switching means to be moved up and down in said vertical slot by said second drive means.
Claim 9
Dependent Claim
12 words
The device of claim 1 wherein said nonconducting gap is an airgap.
References Cited (Backward Citations)
FR1155308A
Cited
US2939371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |