| 摘要 |
A deer whistle for vehicular safety is provided which is more reliable than known deer whistles. A single body had therethrough two whistle cavities, and the manufacture of the whistle is done in a manner, and using structures, which provide for accurate sound production. In particular, the device uses a raised weld between the whistle portions, alignment posts and recesses to further increase the accuracy of manufacture, and finally uses a specified combination of heat and pressure in whistle manufacture for the weld. |
