Analog balance
US4352978A · kind A · utility
Inventor
Key dates
| Filing date | Oct 5, 1981 |
| Grant date | Oct 5, 1982 |
| Priority date | — |
| Expiry date | Oct 5, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06G1/065
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A calculating device comprising a rockable cradle having a number of parallel grooves formed in its upper surface, each of which supports a beam provided on at least one of its faces with a calculating scale so that the beam has sliding movement within the groove, along its longitudinal axis. A cursor line which lies normal to the longitudinal axis of the sliding beams is marked on the upper face of the rockable cradle. In typical use a slidable beam having a question scale marked on one of its faces is moved so that a question integer on the question scale registers with the cursor line thereby providing a rotating torque about the axis of rotation of the rockable cradle. A further slidable beam having an answer scale marked on one of its faces is moved so as to provide a rotating torque in antiphase direction to that provided by the question scale beam, the antiphase torque being adjusted to such a magnitude that the cradle is balanced and the beams are horizontal. The answer integer may then be read from the answer scale where the same registers with the cursor line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.