Ear defenders

Details Ear defenders Ear defenders

1983-04-12

1985-07-16

Gonzales, John

Acoustics

Anatomic or prosthetic relation

Ear and mouth

179156R, 179182R, 128152, H04R 2500

Patent

active

045290571

ABSTRACT:
An ear defender for a headset, the ear defender comprising a rigid shell having holes in a central portion to permit the passage of ambient sound and including a valve mechanism to close the holes as required. The shell consists essentially of a unitary construction, being formed as a one-piece moulding. The valve mechanism consists of a fixed plate and sliding plate both of which have holes which can be aligned to open the valve or misaligned to close the valve. The valve is mounted wholly within the shell so providing protection for the valve mechanism. Access to the valve and to other components within the shell is thus provided entirely from one side of the shell.

REFERENCES:
patent: 3661225 (1972-05-01), Anderson
patent: 3798393 (1974-03-01), Gorike
patent: 4064362 (1977-12-01), Williams

Affiliated with

Also associated with

Rating

Ear defenders does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ear defenders, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ear defenders will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1731617