Pneumatic shaping ear plug

Details Pneumatic shaping ear plug Pneumatic shaping ear plug

1976-08-09

1978-05-16

Michell, Robert W.

Surgery

Truss

Pad

A61F 1100

Patent

active

040893324

ABSTRACT:
A new and improved pneumatically shaped ear plug comprising and constructed of an elastomeric hollow body of sheet material dimensioned to and constructed for being inserted into the ear canal or ear cavity, and end of the cylindrical hollow body being of a material performing as a diaphragmatic member so that when it is depressed, the volume of air therein extends the cylindrical side, and vice versa, said end member having a lead or handle means for retracting said diaphragm when it is depressed for restoring it to its original condition, said end member being of such resiliency of said elastomeric material that it retains its depressed condition when it has been so depressed, and retains its released condition when it has been released, thereby constituting a dual state condition as operated upon by action on said diaphragmatic member.

REFERENCES:
patent: 1344935 (1920-06-01), Baum

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