Drilling rig mast erection system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 16, 2018
Grant Date -
Sep 1, 2016
app pub date -
May 11, 2016
filing date -
Apr 17, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A drilling rig mast erection system includes a mast support shoe that is fixedly attached to a drilling rig substructure and has a support shoe pinned connection. A bottom mast section has a first mast pinned connection that is adapted to be pivotably connected to the support shoe pinned connection. A mast positioning apparatus is adapted to pivotably position the bottom mast section so that the first mast pinned connection is positioned adjacent to the support shoe pinned connection. The mast positioning apparatus includes a bottom mast support spreader having a first end that is adapted to be pivotably connected to the bottom mast section at a first spreader end pinned connection and a mast erection apparatus having a first end that is adapted to be pivotably connected to the bottom mast support spreader at a first mast erection apparatus pinned connection.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
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