Famous Patents
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 |
| 4425970 | Tractor draft sensing apparatus A tractor draft sensing apparatus capable of sensing only draft forces. This invention is usable with a tractor provided with draft links (14) and includes a mounting member (30) to which the forward end of the draft links are secured by a mounting pin as... | 01/17/1984 |
| 4364231 | Compound master brake cylinder A compound master brake cylinder assembly (10) for a braking system, the cylinder assembly having a reservoir (34), a first low pressure cylinder (72), and a removable high pressure cylinder (58). A relief valve (84) is provided with a poppet valve (104) ... | 12/21/1982 |
| 4243271 | Hydraulic braking system A braking system for a towing vehicle having a trailer brake valve (24) and hydraulically operated brakes (12) and a trailer having hydraulically operated brakes (14). A novel pilot operated control valve (34) directs the output of the trailer brake valve... | 01/06/1981 |
| 4081961 | Articulated vehicle steering system A steering system for an articulated vehicle having a pair of double acting steering cylinders and power steering means consisting of a pump and a hydrostatic steering unit to which the steering wheel of the vehicle is interconnected. Control means are di... | 04/04/1978 |
