Incrementally rotatable teeter-totter
US4896877A · kind A · utility
7Cited by
5References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1989 |
| Grant date | Jan 30, 1990 |
| Priority date | — |
| Expiry date | Jun 28, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63G11/00
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A teeter-totter is disclosed that simultaneously incrementally rotates as it pivots up-and-down. The teeter-totter comprises a base having a fulcrum about which a beam is pivotally mounted for up-and-down movement. The beam is coupled to the fulcrum by a mechanism that simultaneously incrementally rotates the beam upon movement of the beam in at least one of the up-and-down directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.