Hearing aid shape cutting assembly

Details Hearing aid shape cutting assembly Hearing aid shape cutting assembly

1989-04-06

1990-12-04

Bilinsky, Z. R.

Gear cutting, milling, or planing

Milling

Means to trim edge

409229, 144134A, B23C 312

Patent

active

049750054

ABSTRACT:
This invention relates to apparatus for trimming and shape cutting a hearing aid having a three-dimensional body of irregular shape and a flat plate-like member surface mounted against the body for forming an enclosure in which electronic circuitry is mounted. The flat plate-like member has a rim of excess material extending from the body of the hearing aid. The apparatus includes a framework extending from a base with a surface plate mounted on the framework. A rotary drive is connected to the framework with a tool bit extending through an opening in the surface plate. A guide member having a finger is attached to the surface plate with the finger extending over the opening above the rotary tools bit, leaving a space in which the rim of the flat plate-like member is placed for automatic removal.

REFERENCES:
patent: 240934 (1881-05-01), Towne
patent: 1472510 (1923-10-01), Briddell
patent: 1715660 (1929-06-01), Knight
patent: 2062416 (1936-12-01), Howard
patent: 2314660 (1943-03-01), Peterman
patent: 4537234 (1985-08-01), Onsrud

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