Drive system for telescopic legs for tables
US9327951B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 30, 2012 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Nov 6, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47B9/10
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A hydraulic drive system readily adapted for either manual actuation or motor-driven actuation due to the unique design of the hydraulic drive and its coupling to either a hand crank or to a motorized drive to provide hydraulic pressure to lift cylinders that can be attached to table legs for vertical adjustment. The hydraulic drive includes a screw jack having an end extending from one end of a housing and splined or otherwise keyed. A manual crank arm or motorized drive assembly includes a coupling which mates with the end of the screw jack to provide a drive force for the hydraulic cylinder drive. The motorized drive assembly includes a pair of toothed hubs and an intermediate flexible sleeve allowing alignment of the motorized drive to the drive assembly as well as providing sound dampening, a cushioned coupling, and facilitates overcurrent detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.