Safety device for a collapsible playpen
US6317907A · kind A · utility
Inventor
Key dates
| Filing date | Aug 9, 1999 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Aug 9, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47D13/063
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A safety device for a collapsible playpen is provided. The playpen includes four upper corner seats, four lower corner seats, four vertical posts respectively secured at their upper ends to the upper corner seats and at their lower ends to the lower corner seats, four upper railings, each or which includes a pair of identical rods pivoted together by first connecter, a central seat positioned at a lower center of the playpen, four drive rods ariented diagonally and each having inward ends pivoted to the central seat and outward ends pivoted to the lower corner seats respectively, a pair of linking rods each having two rods or equal length pivoted together by a second connecter, a strip connecting the linking rods and extending through a pair of hooks on the top of the central seat and a casing attached to the peripheral portion of the playpen. Four reinforcement rods are disposed under the drive rods to prevent the top of the vertical posts from falling inward so as to prevent the playpen from an inadvertent collapse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.