Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece – Coating or impregnating workpiece before molding or shaping...
Patent
1989-01-19
1991-04-16
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
With printing or coating of workpiece
Coating or impregnating workpiece before molding or shaping...
264135, 264222, 264255, 264279, 264313, 425 2, B29C 4122
Patent
active
050080580
ABSTRACT:
A method for forming a part inserted in the auditory canal of a hearing impaired person, said part being either an otoplastic or a carrier part of the hearing aid insertable into the auditory canal or an ear adaptor member for a hearing aid to be worn behind-the-ear, characterized by providing an expandable elastic member, coating said elastic member with a hardenable material, inserting the coated member into an ear of the person who is hearing impaired, allowing the hardenable material to harden to retain the outside contour of the part. The elastic expandable member may be either a porous member which is partially saturated on the outer surfaces or may be a smooth member which is coated with the hardenable material. If desired, a physiologically compatible coating may be applied onto the hardened surface layer subsequent to the hardening process.
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Voroba, "A Tool for the Optimization of Hearing Aid Fittings", Hearing Instruments, vol. 35, No. a, 1984, pp. 12-16.
Sale Brochure for "3M COMPLY.TM. Instant Earmold", 3M Hearing Components and Disposables-(70-2008-2478-0(77.5)11 ).
Smolak et al., "Disposable Foram Earmolds", Hearing Instruments, vol. 38, No. 12, 1987, pp. 24-27 and 49.
Basel Rainer
Henneberger Hans
Durkin II Jeremiah F.
Siemens Aktiengesellschaft
Woo Jay H.
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