Heavy duty jig saw
US3982521A · kind A · utility
5Cited by
2References
8Claims
0Family size
Inventor
Key dates
| Filing date | Oct 20, 1975 |
| Grant date | Sep 28, 1976 |
| Priority date | — |
| Expiry date | Oct 20, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/554
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The Present heavy duty jig saw is constructed for cutting through walls of concrete, masonry, and the like. For this purpose a somewhat elongated suction bell carries a guide bar secured to one longer side of the bell. The guide bar in turn carries tool carrier means which are movable back and forth along the guide bar by a separate hydraulic drive. The tool carrier supports a tool head which is reciprocable by a second hydraulic drive. The suction bell is provided with a sealing skirt around its open edge and preferably adjustable legs secured to the bell limit the elastic deformation of the sealing skirt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.