Load counterbalancing mechanisms
US4557459A · kind A · utility
8Cited by
7References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 8, 1982 |
| Grant date | Dec 10, 1985 |
| Priority date | — |
| Expiry date | Jul 8, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16M2200/044
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A load counterbalancing mechanism wherein the mechanically actuated interaction of two independent spring systems, one of which is adjustable, provides the necessary counterbalancing forces to balance the torque forces set up by a load being raised, lowered or tilted about a point on which it is pivoted. Various loads are therefore accommodated by the adjustable spring system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.