DE167231C - - Google Patents
Info
- Publication number
- DE167231C DE167231C DENDAT167231D DE167231DA DE167231C DE 167231 C DE167231 C DE 167231C DE NDAT167231 D DENDAT167231 D DE NDAT167231D DE 167231D A DE167231D A DE 167231DA DE 167231 C DE167231 C DE 167231C
- Authority
- DE
- Germany
- Prior art keywords
- slot
- roller
- closure
- friction
- curtain
- 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
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)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE167231C true DE167231C (en:Method) |
Family
ID=432561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT167231D Active DE167231C (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE167231C (en:Method) |
-
0
- DE DENDAT167231D patent/DE167231C/de active Active
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