Lift drive device
USRE44366E1 · kind E1 · reissue
0Cited by
12References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2012 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | Jan 10, 2032 |
Classification
- Technology area (CPC —)General
Abstract
A lift drive comprising: a spiral drive element having an axis of rotation, a rack having teeth sized and shaped to be engaged by the spiral drive element, the rack having a longitudinal axis parallel to the axis of rotation, and a motor to rotate the spiral drive element, wherein upon the spiral drive element-rotating, one of the spiral drive element and the rack moves relative to the other along the longitudinal axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.