H - Electricity – 04 – R
Patent
H - Electricity
04
R
H04R 5/027 (2006.01) H04R 29/00 (2006.01)
Patent
CA 2287164
A laminated artificial pinna having a concha, fossa and auditory canal. The auditory canal (23) is constructed and arranged relative to the concha (12), so that the distance (A) (see figure 7) from the centre of the entrance of the auditory canal (23) to the rear wall of the concha (12) lies within the range of 15 mm to 20 mm, the distance (B) (see figure 8) from the centre of the entrance of the auditory canal to the concha floor lies within the range of 9 mm to 15 mm, and the alignment of the turning point (C) (see figure 9) with the centre of the entrance of the auditory canal (23) is substantially horizontal. The pinna is made with the help of an encapsulated model of a human pinna. A cross-sectional shape is revealed by incrementally machining the encapsulated model away and of each revealed cross-sectional shape an image is taken. The image is used to produce a replica of the cross section out of sheets of material which are assembled in a stack to form the laminated model of the pinna.
L'invention porte sur un pavillon d'oreille artificiel, laminé, comportant une conque, une fossette et un canal auditif. Le canal auditif (23) est conçu et disposé par rapport à la conque de sorte que la distance A (figure 7) allant du centre de l'entrée du canal auditif (23) à la paroi arrière de la conque (12) soit comprise entre 15 mm et 20 mm, la distance (B) (figure 8) allant du centre de l'entrée du canal auditif au fond de la conque soit comprise entre 9 mm et 15 mm, et que le point tournant (C) (figure 9) et le centre de l'entrée du canal auditif (23) forment un alignement sensiblement horizontal. Le pavillon est conçu à l'aide d'un modèle encapsulé du pavillon humain. Une forme de section transversale apparaît après usinage progressif du modèle encapsulé et une image de cette forme transversale est prise. L'image est utilisée pour produire une réplique de la section transversale prélevée dans des feuilles de matériau qui sont empilées de façon à former le modèle laminé du pavillon.
Sibbald Alastair
Warner Derek George
Central Research Laboratories Limited
Ridout & Maybee Llp
Sibbald Alastair
Warner Derek George
LandOfFree
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