Oscillatory device for a collapsible playpen
US6571408B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Jan 16, 2002 |
| Grant date | Jun 3, 2003 |
| Priority date | — |
| Expiry date | Jan 16, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47D13/063
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An improved oscillatory device for a collapsible playpen includes for oscillatory devices respectively engaged the receiving space of four lower corner members of a collapsible playpen. The improved oscillatory devices each has a hollow interior base seat, a pedal member, an elastic resistance member and a suspending member sequentially disposed into the base seat and rotatably secured by axial pins respectively, an inverse U-shaped suspending rod and a compressed spring suspending the oscillatory device into the lower corner member. Thereby tread an extension of the base seat and simultaneously lift up the playpen to lead the suspending member moving upward. The playpen is able to oscillated steadfastly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.