Patent · US Expired

Vertical gang saw apparatus

US4993299A · kind A · utility

3Cited by

7References

1Claims

0Family size

Assignee

General Electric Company · US

Inventors

Charles P. Hallez · Tellin, BE
Kurt Brach · Rodgau, DE
Vincent J. M. G. Favart · Cortil-Noirmont, BE
Jean-Claude O. P. Decroly · Brussels, BE
Pierre L. H. G. Ledru · Gembloux, BE
Werner Haag · Marktredwitz, DE
Josef Hecht · Erlangen, DE

Key dates

Filing date	Apr 24, 1989
Grant date	Feb 19, 1991
Priority date	—
Expiry date	Apr 24, 2009

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T83/8805
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A vertical gang saw produces an ovoidal sawing curve when the frame has at each corner attached feet that are engaged in slide bars which themselves are attached by an extremity to the body of the machine. The lower and upper slide bars undergo a synchronized swing movement that is transmitted by small drive rods. The lower drive rods are driven by an eccentric gear moved vertically. The upper drive rods are driven by an oscillating pinion with a double cam.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.