DE212487C - - Google Patents
Info
- Publication number
- DE212487C DE212487C DENDAT212487D DE212487DA DE212487C DE 212487 C DE212487 C DE 212487C DE NDAT212487 D DENDAT212487 D DE NDAT212487D DE 212487D A DE212487D A DE 212487DA DE 212487 C DE212487 C DE 212487C
- Authority
- DE
- Germany
- Prior art keywords
- curtain
- spring housing
- ratchet mechanism
- double
- ratchet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/08—Shutters
- G03B9/28—Roller blind or flexible plate
- G03B9/32—Double blind
- G03B9/34—Double blind with adjustable slot; with mechanism controlling relative movement of blinds to form slot
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Curtains And Furnishings For Windows Or Doors (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE212487C true DE212487C (cg-RX-API-DMAC7.html) |
Family
ID=474218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT212487D Active DE212487C (cg-RX-API-DMAC7.html) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE212487C (cg-RX-API-DMAC7.html) |
-
0
- DE DENDAT212487D patent/DE212487C/de active Active
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