Well tractor drive section with pairs of drive arm bearings mutually oppositely displaced from the centre line
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 23, 2021
Grant Date -
Feb 14, 2019
app pub date -
Feb 2, 2017
filing date -
Feb 9, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A well tractor drive section comprising—a drive section body (0) with main central axis (0x), with—first and second drive wheels (10A, 10B) on the outer ends of first and second wheel arms (12A, 12B); inner ends of said wheel arms (12A, 12B) arranged pivotally about first and second transverse axes (8Ax, 8Bx) in first and second transverse-axial wheel arm bearings (14A, 4B) for said wheel arms (12A, 12B) to rotate in a direction away from said main axis (0x) to engage said drive wheels (10A, 10B) with an inner wall of a well; —said first and second transverse-axes (8Ax, 8Bx) being mutually oppositely laterally displaced with a first separation (d1) from said main central axis (0x) in a common perpendicular plane (8P) relative to said main central axis (0x).
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