Multiple overload protection for electronic scales
US5521334A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 27, 1994 |
| Grant date | May 28, 1996 |
| Priority date | — |
| Expiry date | Dec 27, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G23/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electronic scale is disclosed which has multiple overload protection features for protecting the load cell and a weight distribution plate from excessive strain due to vertical overload on the scale or from twisting resulting from an article being placed thereon which exceeds the load capacity of the scale, or from excessive forces due to mishandling of the scale. A first overload protection is in the form of a boss molded into the base of the scale on which the free end of the load cell abuts if an excessive load is placed on the platter of the scale. A second overload protection is in the form of a peripheral depending flange on the platter which abuts a peripheral portion of the a top cover to prevent excessive strain on the load cell and a weight distribution plate from excessive loading or mishandling of the scale. A third overload protection is in a plurality of ribs which are molded into the base and which extend upwardly adjacent the under surface of the four corners of the weight distribution plate so that the weight distribution plate abuts these ribs in the event that an excessive load is placed on the platter in an off center manner. The weight distribution plate is …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.