Stabilized elevator for stretcher or the like
US4254928A · kind A · utility
12Cited by
10References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1979 |
| Grant date | Mar 10, 1981 |
| Priority date | — |
| Expiry date | Mar 9, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61G13/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An elevator for raising and lowering a hospital stretcher or the like without binding. The stabilized elevator has a pair of intermeshed timing gears at each end of the elevator which are connected by horizontal axles that are rotationally secured to a first telescoping section of the elevator. Each timing gear intermeshes with a vertical toothed rack secured to a second telescoping section adjacent each gear. The intermeshing timing gears and racks cooperate to keep the telescoping elevator from binding, particularly when the stretcher or the like has a heavier load at one end than the other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.