Collapsible frame structure for a child's push chair
US4266807A · kind A · utility
Inventor
Key dates
| Filing date | Jul 19, 1979 |
| Grant date | May 12, 1981 |
| Priority date | — |
| Expiry date | Jul 19, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62B2205/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A collapsible frame structure for the body of a child's push chair has a pair of side frames between which a collapsible X-frame is pivotally connected. Each side frame has when erected, a pair of upright members and two diagonal members which are pivotally connected to the upright members adjacent their ends. The diagonal members have a pivotal interconnection and each diagonal member has a hinge between this pivotal interconnection and one of the pivotal connections between each diagonal member, and an upright member. Toggles are provided for maintaining the X-frame extended. Extensions of the respective diagonal members provide handles for the push chair and a support for the back of a fabric chair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.