Wave washer and variable-flow-rate valve
US10876466B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Mar 7, 2018 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Mar 7, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A wave washer according to an aspect of the present disclosure includes an annular body which is formed around an axis into a wave shape and at least one protruding piece which protrudes inward or outward from the body. The at least one protruding piece includes a flat surface which is perpendicular to the axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.