Counterbalance assembly for rotatable robotic arm and the like
US4756204A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 1987 |
| Grant date | Jul 12, 1988 |
| Priority date | — |
| Expiry date | Feb 11, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2158
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A counterbalance assembly for use with a rotatable arm in a robotic manipulator, wherein such arm is rotated about a rotation axis. The assembly further includes one or more compression springs for providing resistance to compressive forces, and converting apparatus for translating the rotational movement of the rotatable arm about the rotation axis into linear deflection of such compression spring, whereby resistance of the compression spring to linear deflection in either direction along its longitudinal axis establishes an effective counterbalancing force which reduces the load bearing on the arm drive regardless of the direction in which the rotatable arm is rotated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.