Extending tool of sheet-like material
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 12, 2010
Grant Date -
Feb 5, 2009
app pub date -
Feb 8, 2007
filing date -
Feb 8, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An extension tool is provided for stretching a sheet-shaped material over its entirety with minimal adjusting portions and uniform tension. Four corner members are disposed along with four frame members for forming a rectangular frame. Four rods are disposed so as to pass through the four frame members and allow the sides and corners to move towards and away from each other for adjusting the size of the frame. One set of corner members are located on the diagonals and are provided with a moving mechanism for moving the rods along the sides of the rectangle. The extension tool for tensioning the material further comprises a transmission mechanism for converting the movement of a rod in a first side of the rectangle between first corner pairs into a reversing and approaching movement of a second rod in a second side of the frame between second corner pairs.
First Claim
Other Claims data not available
