Draft inducer blower wheel having improved shaft connection
US10036397B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2015 |
| Grant date | Jul 31, 2018 |
| Priority date | — |
| Expiry date | Aug 21, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7035
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A blower motor assembly includes a blower wheel and a motor. The blower wheel includes an integrally formed hub. The motor includes a shaft rotatable about an axis. The hub presents a radially inner hub surface that at least in part defines a hub opening. The inner hub surface defines an inner cross-sectional dimension. The shaft is axially received within the hub opening, such that the blower wheel is supported by the shaft for rotational movement. The shaft includes a toothed region defining a plurality of arcuately spaced apart teeth. Each of the teeth includes a cutting edge. The teeth present an outer cross-sectional dimension that is great than the inner cross-sectional dimension of the inner hub surface, such that the cutting edges of the teeth cut a plurality of grooves in the inner hub surface as the shaft is axially received in the hub opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.