Earmuffs
US12232931B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2021 |
| Grant date | Feb 25, 2025 |
| Priority date | — |
| Expiry date | Jan 22, 2043 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA42B3/16
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Earmuffs with a joint are provided to create a biased pressure distribution about a perimeter of the cup. The earmuffs may include a pivot joint. The pressure distribution creates a wedging pressure (e.g., on a top edge) on the cups that hold the earmuffs on the user's head, for example, when the user rotates the headband behind the head. The bias pressure is also used to adjust the seal formed between the pad and the user's head. Adjustments to the moment created by separating the joints from the cup's apex enable a user to selectively adjust the seal according to the user's preference. A cam is added to the headband to change the hoop stress distributed at the joints and further adjust the compressive forces generated to hold the earmuffs against the user's head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.