Directional drill hammer pullback device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 27, 2015
Issued Date -
N/A
app pub date -
Mar 5, 2014
filing date -
Mar 8, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A pull back system to install or replace underground utilities that is used with a hammer used in horizontal directional drilling operations. The system comprises a drill bit attached to the hammer. The drill bit comprises a cutting face comprising a first and second passage. The system further comprises a pull back adapter comprising an attachment member, a first member, and a second member. The attachment member may be secured to the cutting face of the drill bit by inserting the first member of the pull back adapter through the first passage of the cutting face and inserting the second member of the pull back adapter through the second passage of the cutting face. The first member secures to the second member within an internal cavity of the drill bit to hold the attachment member for movement with the drill bit. A new pipe may be secured to a shackle on the pull back adapter. The drilling machine will then pull the hammer rearwardly through the borehole which in turn pulls the new pipe into the borehole.
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