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The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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| Number | Title | Issue Date |
| 4822243 | Bladed rotor assemblies and control means therefor A bladed rotor assembly and a control means therefor, which comprises a bladed rotor, a fluid-pressure-operable actuator for effecting a change of blade pitch, a first valve member connect to, and movable with the actuator and a second valve member co-ope... | 04/18/1989 |
| 4772181 | Bladed rotor assembly and a control system therefor A counterrotatable bladed rotor assembly drivable by a rotatable shaft comprises a leading propeller, a trailing propeller, and a gearbox located axially between the two propellers and enclosed by a non-rotatable casing having an end for attachment to a s... | 09/20/1988 |
| 4471020 | Foam-containing structures This invention relates to a method of making a foam-containing structure which includes placing and suitably retaining a respective first shaped sheet in each of first and second complementary parts of an open mould. Each sheet includes at least one layer... | 09/11/1984 |
| 3976397 | Rotary actuators suitable for bladed rotors A rotary actuator, suitable for use with rotors having flow-varying blading, for effecting adjustment of the blading, including two relatively-rotatable and co-axially-disposed main actuator components. Each of the components carries a respective abutment... | 08/24/1976 |
