Process and device for pipe bending
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 7, 1992
Grant Date -
N/A
app pub date -
Jun 6, 1991
filing date -
Jun 8, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pipe bending die, in the shape of a cylinder, has a groove gouged out of its lateral surface and a cross section which is a semi-circle of a diameter equal to the diameter of the pipe to be bent. The base of the cylinder is bounded on one hand by a portion of logarithmic spiral defined in polar coordinates by the equation P=Poe-k.theta., bounded by the points .theta.=0 and .theta.=2.pi., and wherein Po and k are positive constants and, on the other hand, by a segment of straight line joining the points of the spiral for which .theta.=0 and .theta.=2.pi..
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully