Pipe burster
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 8, 1991
Grant Date -
N/A
app pub date -
Jun 8, 1990
filing date -
Jun 9, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pipe burster for cracking gas and other pipes preparatory to inserting a replacement pipe in the passage so formed. The burster comprises an elongated body tapering in the lengthwise direction and made up first and second parts 2,14 extending in said direction. The parts are connected by a transverse pivot pin 20. The first part 12 is received within the second part and carries a piston and cylinder 22 by which the parts are separable. The circumference of the body is substantially a closed curve and within the length of the first part the circumference is increased by said separation. Therefor the burster makes a clearance by said separation into which the burster can be advanced. In a modification more than one piston and cylinder is provided.
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