Dual acoustic horn assembly
AssigneeWhelen Technologies, Inc.
InventorsHarold W. Lyons, Jon H. Lyons
Life of this patent
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Abstract
An acoustic horn assembly for use as part of an electronic siren system for an emergency vehicle comprises a pair of integrated molded, rigid plastic members which cooperate to define a pair of divergent sound passages. The entrance ends of these sound passages are displaced do that they may be coupled to separate sound generators, the sound generators being supported from respective vehicle frame side rails. The sound generators are coupled to the sound passage entrance ends by adjustable length sound transmission conduits which are in the form of elbows.
Claims19
A speaker system comprising:
- first driver means, said first driver means generating sound waves in response to an applied electrical signal;
- means supporting said first driver means so that said sound waves generated thereby will be propagated in a first direction;
- second driver means, said second driver means generating sound waves in response to an applied electrical signal;
- means supporting said second driver means so that said sound waves generated thereby will be propagated in a direction which is substantially parallel to said first direction;
- means defining a pair of acoustic horns, said horns each having an entrance end and a discharge end, said horn entrance ends having a circular cross-sectional area and being spatially displaced, said horn discharge ends being adjacently located and having a divergent shape, said horn discharge ends each having a cross-sectional area defining a width and a height wherein the width is larger than the height, said horn discharge ends being acoustically isolated and being in part defined by a common wall which converges at said horn discharge ends, the sound waves exiting said horn discharge ends being propagated in a second direction which is different from and angularly related to said first direction, said horns each turning sound waves coupled thereto at said entrance ends through an angle in relation to said first direction in excess of 45.degree.;
- and
- means for coupling each of said driver means to a said horn entrance end.
A speaker system comprising:
- first driver means, said first driver means generating sound waves in response to an applied electrical signal;
- means supporting said first driver means so that said sound waves generated thereby will be propagated in a first direction;
- second driver means, said second driver means generating sound waves in response to an applied electrical signal;
- means supporting said second driver means so that said sound waves generated thereby will be propagated in a direction which is substantially parallel to said first direction;
- means defining a pair of acoustic horns having entrance and discharge ends, said horn defining means comprising a pair of molded plastic members, said plastic members being rigid, said horn entrance ends being spatially displaced and each defining an axis, said horn discharge ends having a divergent shape and being adjacently located, said horn discharge ends being acoustically isolated and being in part defined by a common wall which converges at said horn discharge ends, the sound waves exiting said horn discharge ends being propagated in a second direction which is different from and angularly related to said first direction, said horns each turning sound waves coupled thereto at said entrance ends through an angle in excess of 45.degree. relative to said first direction;
- and
- means for coupling each of said driver means to a horn entrance end.
Dependencies are inferred from the claim text.