Device for expanding pipes
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 14, 1991
Grant Date -
N/A
app pub date -
Aug 2, 1990
filing date -
Nov 22, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The device is intended for expanding profile pipes set in a well for patching off a troublesome zone, and also for straightening crumpled casings. The device comprises a housing (1) having an expanding member (3) mounted thereon in bearings (4, 5) on a journal (2) extending at an acute angel to the longitudinal axis of the housing (1). The expanding member (3) is shaped as a spherical segment (9) having its external surface defined by alternating portions of a spherical surface (10) and the lateral surfaces of cylinders (11) whose geometric axes being to a plane perpendicular to the axis (13) of the journal (2).
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
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