Balance with clock-like display
US4591011A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 9, 1984 |
| Grant date | May 27, 1986 |
| Priority date | — |
| Expiry date | Jan 9, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G23/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical display is provided to guide the operator during metering of a substance to a desired value. The desired value is entered into a computer and the substance to be metered is applied to a balance. The display is in the form of a clock having a coarse and fine indicator hand. During the coarse metering at the start of the metering cycle, the coarse metering hand is rotated at a first rotational speed relative to the metering rate, i.e. the rate at which the substance is being applied to the balance. During the fine metering phase, namely when the weight on the balance approaches the desired weight, either the same or another hand moves at a rotational speed relative to the metering rate which exceeds the first rotational speed, thereby expanding the sector over which the hand moves while a given amount of the substance is being applied. This greatly facilitates the operator's control over the process and decreases the possibilities that excess weight is added.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.