Torque counterbalancing mechanisms
US4726253A · kind A · utility
16Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 16, 1982 |
| Grant date | Feb 23, 1988 |
| Priority date | — |
| Expiry date | Jun 16, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/459
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A torque counterbalancing mechanism for use on tiltable tables, the mechanism comprising a cam operated on by a spring loaded cam follower so that their interaction produces a force equal and opposite to the torque generated as the tiltable table, with load, rotates either side of the vertical. At the null position, i.e. no torque, the spring is at rest with no pre-stressing and means are provided for changing the effective length of the spring, thereby changing the RATE of the spring, to adjust the mechanism to accommodate different heights of the center of gravity of the load or changes in load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.