They Invented What? (No. 66)

U.S. Pat. No. 4,195,707:  Communicating device.

 

What is claimed is:

1. A device for communicating comprising a flat base and a hollow frustum integral therewith and extending outwardly therefrom, retaining means at the smaller end of said frustum, a discrete diaphragm complementary in shape to said smaller end of said frustum and held thereagainst by said retaining means, and means for connecting a string between a pair of said diaphragms, whereby when a string between two diaphragms is under tension conversation into one device is transmitted via the string to the other device.

2. The device set forth in claim 1, wherein the intersection between said base and said frustum is oval.

3. The device set forth in claim 1, wherein said resilient retaining means includes an inwardly facing flange at the smaller end of said frustum with a plurality of tabs spaced therefrom and integral therewith.

4. The device set forth in claim 3, wherein there are tabs spaced equidistantly around the periphery of said flange and spaced therefrom to define four undercuts therebetween.

5. The device set forth in claim 1, wherein said connecting means is spaced apart apertures in said diaphragm.

6. The device set forth in claim 1, wherein said base is a synthetic organic resin.

7. The device set forth in claim 6, wherein said resin is polypropylene.

8. The device set forth in claim 6, wherein the diaphragm is a rigid paper.

9. The device set forth in claim 6, wherein the diaphragm is a rigid synthetic organic resin.