Device for the transmission over a distance of indications in particular of a meter
US3962691A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 27, 1974 |
| Grant date | Jun 8, 1976 |
| Priority date | — |
| Expiry date | Nov 27, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06M1/276
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A meter to be read which has indicator drums and an exterior connector and, on the other hand, a reading apparatus for making a reading of the indications of the drums detachably connected to the connector. A coding unit in the meter comprises for each drum a stepped cam connected to rotate with the corresponding drum. A movable follower is elastically biased against the stepped cam. A smooth cam driven by drive means is capable of maintaining the follower spaced away from the stepped cam outside periods in which the reading apparatus makes said reading. A device detects the movement of the follower. The smooth cam has, in part, a camming surface whose radius increases regularly between values corresponding to the bearing of the follower on end sectors of the stepped cam. A substantially radially extending surface interconnects the maximum and minimum radius parts of the camming surface. The drive means are adapted to cause the smooth cam to effect a predetermined number of rotational steps in the direction of increasing radii of the camming surface. A counter in the reading apparatus counts the steps effected by the smooth cam when the follower cooperates with said part of the smo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.