Portable rotary power saw
US4840431A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 26, 1988 |
| Grant date | Jun 20, 1989 |
| Priority date | — |
| Expiry date | Jul 26, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28D1/045
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A portable rotary power saw comprising a housing having mounted at its aft end a pair of rear wheels and a handlebar assembly. Mounted at the fore end of the housing a rotary cutting blade and a vertically adjustable axle having a pair of front wheels. Located between the rear and front wheels within the housing is a stationary axle mounted upon a pair of bearings which permit the axle to pivot. The saw includes a height adjustment mechanism comprising a segment, a latch, and a cable and lever assembly for operating the latch. One leg of the segment is supported by the stationary axle and connected to the adjustable axle by a pair of arms. The other leg of the segment includes a plurality of notches spaced along its length and it extends through the top of the housing. The latch is located on top of the housing immediately adjacent the notched leg and is capable of pivoting in and out of engagement with the notches. The segment is biased such that when a user squeezes the lver and exerts a vertically downward force upon the handlebar assembly, the adjustable axle extends vertically downward relative to the housing. Alternatively, when the user discontinues squeezing the lever, the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.