Child's walker with height adjustment apparatus
US4615523A · kind A · utility
Inventor
Key dates
| Filing date | Jun 19, 1985 |
| Grant date | Oct 7, 1986 |
| Priority date | — |
| Expiry date | Jun 19, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47D13/043
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The present invention discloses an apparatus for adjusting the height of a walker which includes a seat, a slidable base, and two U-shaped tubes which are pivotally connected to each other in a crosswise arrangement and are placed between the seat and the slidable base with one central portion of one U-shaped tubes pivotally connected to the rear side of the seat, and the other central portion of the other U-shaped tube movably engaged to the underside of the seat near its front side, the adjusting apparatus comprising two plates secured on the underside of the seat in a parallel arrangement, with each plate having an indented portion formed at its underside; two sliding members provided on the movable central portion, and slidably engaged with the plates respectively; a controlling member pivotally connected with the movable central portion, and having an engaging portion, with an operating portion opposite to the engaging portion, and two protuberances extended upwards; and a spring member arranged between the sliding members and the engaging portion of the controlling member for biasing the controlling member to rotate in a direction that causes the protuberances to move upwards…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.