Swing drive mechanism for child's swing
US6193224A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1998 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | Jun 24, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47D13/105
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A swing drive mechanism is provided for use with infant's and child's swings. The swing drive mechanism provides an input mechanism, an output mechanism, and a torsion spring member disposed between the input mechanism and the output mechanism. The torsion spring member includes a first portion and a second portion that interact together to produce a desirable spring gradient while also reducing the overall length of the torsion spring member. The torsion spring member is secured into attachment with the input mechanism by a novel securement mechanism. The output mechanism includes an axle and a drive flange. Preferably, the features of the input mechanism, the output mechanism, and each portion of the torsion spring member are integrally formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.