Amusement devices: toys – Operated by relatively moving fluid or pressure differential – Including mouthpiece for blowing or sucking
Patent
1990-09-07
1991-10-29
Muir, David N.
Amusement devices: toys
Operated by relatively moving fluid or pressure differential
Including mouthpiece for blowing or sucking
446397, A63H 500
Patent
active
050612204
ABSTRACT:
A diaphragm type game call has at least one diaphragm mounted in a frame in such a way that the diaphragm cooperate with a part or parts of the frame to permit the tension of the diaphragm to be varied selectively, as by fixing the initial effective length of the diaphragm at the outboard edge of a leg of a U-shaped frame whereby the inboard edge serves as a fret of sorts to shorten the effective length of the diaphragm when the diaphragm is pushed against it by the tongue of the user, or by providing a fret intermediate the length of the diaphragm, or by providing one or both legs of a frame with channels into which and from which a diaphragm can be readily mounted and demounted to permit the selective tensioning of the diaphragm so mounted.
REFERENCES:
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patent: 4761149 (1988-08-01), Laubach
patent: 4927399 (1990-05-01), Mueller
patent: 4960400 (1990-10-01), Cooper
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