GB1507580A - Device for optically monitoring the functioning of recording means in a tachograph - Google Patents
Device for optically monitoring the functioning of recording means in a tachographInfo
- Publication number
- GB1507580A GB1507580A GB2509376A GB2509376A GB1507580A GB 1507580 A GB1507580 A GB 1507580A GB 2509376 A GB2509376 A GB 2509376A GB 2509376 A GB2509376 A GB 2509376A GB 1507580 A GB1507580 A GB 1507580A
- Authority
- GB
- United Kingdom
- Prior art keywords
- block
- pencils
- tachograph
- blocks
- face
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/02—Registering or indicating driving, working, idle, or waiting time only
- G07C5/06—Registering or indicating driving, working, idle, or waiting time only in graphical form
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Time Recorders, Dirve Recorders, Access Control (AREA)
- Traffic Control Systems (AREA)
Abstract
1507580 Tachographs KIENZLE APPARATE GmbH 17 June 1976 [19 June 1975] 25093/76 Heading G1J To monitor the functioning of the recording pencils 3, 4, 5 in a vehicle tachograph in which the pencils record on the rear face of a diagram disk 6, an image of the pencils is projected on to a screen 12, Fig. 1, or 39, Fig. 4, set in a window 11 or 41 in the dial face 7 at the front of the tachograph. In Fig. 1, a light path is defined by blocks 14, 16, 19 of glass or transparent plastics material mounted on the cover plate 1 of the tachograph housing. Light from a bulb 13 passes through the block 14 which has a matt exit face 15 to provide a uniformly illuminated background to the pencils 3, 4, 5. The entry face of the block 19 incorporates spherical converging lenses 20, 21, 22. To prevent doubleimages, the cover plate 1 carries screens 25, 26, 27, 28, and the blocks 16, 19 have rows of holes 27, 30, 31, 32 with matt bore surfaces. The entry face 17 of the block 16 is not normal to the cover plate 1, Fig. 2, so that the shadows of the pencils on the diagram disk 6 are included in the image on the screen 12. In'Fig. 4, the block 38 forms a condensor lens and the entry surface 36 of a block 35 is partcylindrical to form a converging lens. The block 40 has parallel reflecting surfaces 42, 43 to shift the image inwards from the edge of the dial 7. To provide a clear path for the light between blocks 35, 40, the edge of the diagram disk 6 is bent up by suitable fixed guides, not shown. The bulb 13 can be switched on when the tachograph functioning is to be monitored. Preferably the reflecting surfaces of the transparent blocks are silvered.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19752527251 DE2527251C2 (en) | 1975-06-19 | 1975-06-19 | Arrangement for the optical function control of the recording means of a tachograph |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1507580A true GB1507580A (en) | 1978-04-19 |
Family
ID=5949405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2509376A Expired GB1507580A (en) | 1975-06-19 | 1976-06-17 | Device for optically monitoring the functioning of recording means in a tachograph |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2527251C2 (en) |
FR (1) | FR2315130A1 (en) |
GB (1) | GB1507580A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0774736A3 (en) * | 1995-11-14 | 2000-03-08 | Mannesmann VDO AG | Electronic tachograph |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2328489A1 (en) * | 1973-06-05 | 1975-01-02 | Moto Meter Gmbh | Taximeter with visual control - comprises dial indicating instrument with a special illuminated control window with internal mirror reflector |
-
1975
- 1975-06-19 DE DE19752527251 patent/DE2527251C2/en not_active Expired
-
1976
- 1976-06-10 FR FR7617538A patent/FR2315130A1/en active Granted
- 1976-06-17 GB GB2509376A patent/GB1507580A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0774736A3 (en) * | 1995-11-14 | 2000-03-08 | Mannesmann VDO AG | Electronic tachograph |
Also Published As
Publication number | Publication date |
---|---|
DE2527251A1 (en) | 1976-12-30 |
FR2315130A1 (en) | 1977-01-14 |
FR2315130B1 (en) | 1980-09-26 |
DE2527251C2 (en) | 1983-01-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee | ||
PCPE | Delete 'patent ceased' from journal |
Free format text: 4847,PAGE 248 |
|
PCNP | Patent ceased through non-payment of renewal fee |