Wheels having shock absorbing characteristics and a surface treatment apparatus using the same
US11458771B2 · kind B2 · utility
2Cited by
54References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2018 |
| Grant date | Oct 4, 2022 |
| Priority date | — |
| Expiry date | Mar 4, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60B9/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vacuum cleaner can include an upright section, a surface cleaning head coupled to the upright section, and at least one wheel coupled to the surface cleaning head. The at least one wheel can include a hub, a rim, and an absorber. The absorber can extend between the hub and the rim. The absorber can be configured to deform before the rim experiences substantial deformation. A deformation limiter can be provided that is configured to limit the deformation in the absorber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.