Toy birthing apparatus with chugging-like delivery motion
US4836821A · kind A · utility
Inventor
Key dates
| Filing date | Sep 16, 1987 |
| Grant date | Jun 6, 1989 |
| Priority date | — |
| Expiry date | Sep 16, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H3/008
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Toy apparatus is provided with delivery structure constructed to simulate a natural birthing process by imparting slow pulsating delivery motion to fetal dolls as they exit from a simulated birth canal. Such delivery structure includes an elongated cylinder which constitutes a birth canal, a piston mounted for longitudinal movement within the cylinder, a spring that biases the cylinder forward to push fetal dolls in a delivery direction through the open front end of the cylinder, and retarding structure acting on the piston in opposition to the spring. The retarding structure includes a seal function alloy engaged with the cylinder and carried by the piston, and metering structure to create a vacuum behind the piston by limiting the rate at which air is drawn into the cylinder behind the piston while the latter moves forward.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.