Motor mechanism for child's swing
US6283870A · kind A · utility
18Cited by
11References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 18, 1998 |
| Grant date | Sep 4, 2001 |
| Priority date | — |
| Expiry date | Jan 18, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20864
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A spring motor mechanism for use with a child's swing (100) that includes a spring (300) attached to a slip clutch device (400) to prevent the spring (300) from beconing over wound. In addition, the spring motor mechanism includes an indecator (800) which reveals the amount of torsional energy stored in the spring (300). This can be used by an operator to approximate the time remaining before the spring (300) must be re-wound. The invention also includes an adjustable swing height system (700) that allows the operator of the swing to determine a maximum swing height and also prevents the over-swinging of the child seat (116).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.