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US4354098A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 3, 1981 |
| Grant date | Oct 12, 1982 |
| Priority date | — |
| Expiry date | Nov 3, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06M7/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A counting apparatus is provided for producing a countable signal in response to each object moving past a predetermined point in a predetermined path of travel. This counting apparatus comprises a lever interposed in the path of travel substantially adjacent to the predetermined point and movable in a first direction in response to passage of at least a portion of an object past the predetermined point, where the portion of the object is of a size which is within a predetermined range of sizes. A switch having a first signal state and a second signal state, is operatively coupled to a further coupling arrangement with the switch for actuating the switch means to its first state in response to movement of the lever in the first direction. A resetting structure is also operatively coupled for resetting the lever and the switch so as to actuate the switch to its second state in response to a predetermined minimum incremental movement of the lever in a direction generally opposite said first direction in response to a predetermined minimum incremental decrease in the size of a portion of said object passing by said predetermined point along said path of travel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.