Center-lock portable truck scale
US5446248A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 12, 1992 |
| Grant date | Aug 29, 1995 |
| Priority date | — |
| Expiry date | Nov 12, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S177/09
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A center-lock portable truck scale has an end positioning post (4) between sides at ends of a truck scale and a central positioning post (8) positioned centrally in truck-scale sections. Positioning rods (5 and 9), preferably bolts, form positioning bumpers at adjustable distances from the lock posts. Hinges (23, 29 and 49) are employed to connect sides of the scale bridge (11, 12) so that large truck scale decks may be foldable for easy transportation to the site of installation. Scale loading weight is carried on a vertical load-cell pillar (75) that rests pivotally on a load button (77) that is positional in a load-button indentation in a top surface of strain-gauge beams (80). The central positioning post and positioning bolts prevent excessive end-to-end movement while the end positioning posts prevent excessive side-to-side or twisting movement of a scale unit, thereby positioning scale weight directly on load cells (3) in jarring and temperature-change use-conditions for more accurate weighing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.