Portable circular saw
US5850698A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 1997 |
| Grant date | Dec 22, 1998 |
| Priority date | — |
| Expiry date | May 30, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27B9/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The disclosed portable circular saw includes a motor having an axis, a housing enclosing the motor therein, a handle carried by the housing, an arbor operatively connected to the motor, the arbor having an axis of rotation substantially perpendicular to the motor axis, and a shoe supporting the housing thereon. The housing is inclined at an angle relative to the shoe. The handle is also disposed between the housing and the shoe. Preferably, the housing inclination angle is about 45.degree.. The saw may also include a drive shaft disposed on the motor axis and a transmission mechanism connected to the arbor and the drive shaft. This transmission mechanism creates a torque in the rotational direction opposite to the rotational direction of the arbor. Preferably, the transmission mechanism includes a first gear disposed on the drive shaft, and a second gear disposed on the arbor, where the second gear meshes with the first gear. It is preferable that distance from the blade to the end of arbor is longer than distance from the blade to the drive shaft. The saw may also include a hook assembly attached to the handle at a position relative to the saw's center of gravity so that, when the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.