Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 5611409 | Exhaust muffler for small internal combustion engine The exhaust muffler as a tailpipe head member including a front end mounted inside an expansion chamber of the muffler. The front end of the head member deflects exhaust gas pressure waves passing through the chamber. An annular passage is provided by the... | 03/18/1997 |
| 4858722 | Self-contained muffler attachment and conversion kit for small two-cycle engines A kit includes a self-contained muffler which attaches to the output exhaust system of a small two-cycle engine, such as a model engine that is in the range of 0.15 to 1.25 cubic inches displacement. The kit provides a low cost adaptation of existing engi... | 08/22/1989 |
| 4031979 | Adjustable muffler for model aircraft type engines In a muffler for a two-cycle combustion engine of the type commonly used to power miniature aircraft, cars, boats and models, the exhaust gas is directed into an expansion chamber for expansion and cooling, thence through a series of spaced baffles in a b... | 06/28/1977 |
