Patent · US Active

Banded cooling fan band having knit-line strength improvement

US11898569B2 · kind B2 · utility

0Cited by

2References

12Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Markus Liedel · Pegnitz, DE
Alain-Bernard Isel · Diefenbacherhof, FR
Ray Cote · Windsor, US
Eugen Stockmann · Karlsruhe, DE
Serge Nako · Souffelweyersheim, FR

Key dates

Filing date	Apr 6, 2021
Grant date	Feb 13, 2024
Priority date	—
Expiry date	Apr 6, 2041

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05D2230/20
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fan includes a hub configured to be driven by motor to rotate about a fan rotational axis, blades that protrude radially from the hub and a band that surrounds the rotational axis and connects the tips of the blades. The band includes structurally-reinforcing ribs that protrude from the hub-facing surface of the band. A rib is disposed between respective tips of each pair of adjacent blades. Each rib bridges a knit-line of the band, and has a circumferential dimension that is at least 40 percent of a distance between the respective tips of the adjacent blades.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.