Leverless scale sensor
US4146100A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1978 |
| Grant date | Mar 27, 1979 |
| Priority date | — |
| Expiry date | Mar 24, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G3/1404
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This weighing scale has a platform, a load cell supporting the platform and a base supporting the load cell. The load cell utilizes electrical strain gage elements, which are connected in an electrical circuit controlling an indicator. The scale is constructed to be unaffected by the eccentricity of the load on the platform. The scale is particularly suited for use in retail or other establishments, where loads are placed on the platform casually and rapidly, so that eccentric loading is common. The load cell comprises an integral block of material divided by milled apertures and recesses into two vertical members and three horizontal members connecting the vertical members. The platform is supported on one of the vertical members. The base is connected to the other vertical member. The upper and lower horizontal members carry most of the bending moments due to eccentric loads from one vertical member to the other. The middle horizontal member is constructed so that it carries most of the vertical component of the load. The strain gage elements are on this middle horizonal member and thus measure only the vertical load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.