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 |
| 7168531 | Self-contained brake and remote control system for a trailer A self-contained trailer braking system comprises a fifth wheel hitch attached to a trailer frame, where the trailer hitch further comprises a kingpin to engage a fifth wheel of a towing vehicle. A sliding mechanism is attached to the kingpin, where the sliding mech... | 01/30/2007 |
| 6027134 | Removable trailer tongue A removable trailer tongue for use with a towing vehicle and a trailer frame equipped with hydraulic brakes. The trailer tongue (10) can be removed without disconnecting any of the components of the hydraulic system. A first guide (20) and a second guide ... | 02/22/2000 |
| 5485900 | Brake lockout device An automatic brake lockout for restricting operation of a trailer hitch surge suppressor as a trailer is being backed by a pulling vehicle. The automatic brake lockout works on a two-part trailer hitch with a first member sliding toward a second member to... | 01/23/1996 |
| 4842340 | Brake for a vehicle trailer A brake slip control system for trailers equipped with overrun brakes is disclosed, in order to make the brake device independent of the towing vehicle, the pressure fluid source is arranged at the trailer.... | 06/27/1989 |
