Force measuring apparatus
US4037469A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1975 |
| Grant date | Jul 26, 1977 |
| Priority date | — |
| Expiry date | Aug 11, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G19/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A load weighing device is provided to determine the magnitude of a load carried by a material handling device such as a lifting crane, hook block arrangement, or the like. The weighing device is designed to be incorporated into existing material handling apparatus and to accurately measure the magnitude of any load being handled by the apparatus while minimizing the likelihood of extraneous forces from introducing erroneous measurements (unrelated to the load) into the weighing system. In a first embodiment of the invention, the material handling apparatus includes a first structure for carrying a load, a second structure from which said first structure is suspended, with one of the structures including an elongated force-transmitting member having a longitudinal axis. A load member has a central portion which engages a portion of the force-transmitting member and the load member also has opposite end portions which engage the other of the structures. The load member is mounted such that the first structure applies a force thereto in proportion to the load in one direction to either the central portion or the end portions of the load member, while the second structue applies a forc…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.