Collapsible and portable megaphone

Acoustics – Sound-modifying means – Intensifying horn

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

181180, G10K 1100

Patent

active

047038292

ABSTRACT:
A megaphone is formed from a self-supporting flexible plastic sheet. The sheet is wrapped with overlapping side edges to form a horn shaped member. The overlapping edges are releasably interlocked by edge slots and interconnecting edge arms. A separate mouthpiece has a tube which telescopes into the narrow mouth end of the horn and has an outer shaped end for coupling to the user's lips. The plastic sheet may be rolled into a compact tubular roll. The mouthpiece is placed over the roll to maintain the rolled configuration for storage and transport. The horn sheets can be readily mass produced by stamping and the mouthpiece by molding.

REFERENCES:
patent: 648994 (1900-05-01), Porter
patent: 673396 (1901-05-01), Hogan
patent: 936910 (1909-10-01), Kingsley
patent: 1158871 (1915-11-01), Tomlin
patent: 1211584 (1917-01-01), Hooey
patent: 1504170 (1924-08-01), Weins
patent: 1541122 (1925-06-01), Dodge et al.
patent: 2517665 (1950-08-01), Hochstein
patent: 2790504 (1957-04-01), Hooe
patent: 3450226 (1969-06-01), Kessler

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Collapsible and portable megaphone does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-1670492

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.