Spreader unit for multi-legged stands
US5823491A · kind A · utility
26Cited by
11References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1996 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | Mar 7, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16M2200/021
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A spreader unit for controlling a multi-legged stand is presented comprising a hub having a central axis and a plurality of arms hinged to the hub to swing in radial planes with respect to the hub axis. A control shaft is mounted in the hub for rotation about the axis with a reversible gear drive between the shaft and arms so that rotation of the shaft swings the arms with respect to the hub in unison and vice versa. A control for locking the shaft against rotation with respect to the hub is provided to hold the arms in required spread positions with respect to the hub.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.