Self-propelled drive and cutter using same
US11453139B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Jan 29, 2020 |
| Grant date | Sep 27, 2022 |
| Priority date | — |
| Expiry date | Apr 1, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F15/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A self-propelled cutter has a gear assembly to provide both downward and forward force on a material to be cut. A gear assembly includes a drive input gear that engages with a transfer gear and propulsion gear engaged with the transfer gear by a lever arm. The drive gear and transfer gear are coupled and fixed to the cutter body but the propulsion gear rotates about the transfer gear via the lever arm. This gear assembly enables the propulsion gear to move as required to provide both downward and forward force on a material to be cut, such as a cast. A self-propelled cutter may have a drive input that is coupled with a drive input device, such as a crank or an electric motor. A cutter may have a first gear assembly on a first side of the cutter body and a second gear assembly on a second side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.