Blank for a head restraint
US8662083B2 · kind B2 · utility
3Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2010 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Jul 4, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B90/17
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A blank for a head restraint is disclosed. The blank includes a frame and a sheet extending across the frame wherein a main aperture and a pair of auxiliary apertures are provided in the sheet. The arrangement of the apertures is such that when the sheet is deformed upon placement on a patient's head, the main aperture is such to leave a patient's face substantially free of the sheet and the auxiliary apertures are such to cause a retaining strut to be formed by portions of the sheet between the main aperture and the auxiliary apertures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.