Invention Grant
- Patent Title: Pullback system for drilling tool
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Application No.: US15232345Application Date: 2016-08-09
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Publication No.: US10208541B2Publication Date: 2019-02-19
- Inventor: Keith A. Hoelting , Andrew James Kreimeyer
- Applicant: Vermeer Manufacturing Company
- Applicant Address: US IA Pella
- Assignee: Vermeer Manufacturing Company
- Current Assignee: Vermeer Manufacturing Company
- Current Assignee Address: US IA Pella
- Agency: Merchant & Gould P.C.
- Main IPC: E21B7/28
- IPC: E21B7/28 ; E21B10/62 ; E21B10/42 ; E21B7/04 ; E21B7/06 ; E21B7/20 ; E21B47/024

Abstract:
A pullback system for a drilling tool includes features to retain a pulling cable. The drilling tool includes a drill bit body for carrying a plurality of cutting teeth. The drill bit body has a first side and an opposite second side. The drill bit body also defines a first pullback device passage that extends through the drill bit body from the first side to the second side. The first pullback device passage extends generally along a passage axis that extends through the drill bit body. The first pullback device passage includes at least a portion adjacent to the first side that curves as the surface extends in a direction along the passage axis. The passage axis is positioned along a reference plane that generally bisects the drill bit body.
Public/Granted literature
- US20170044835A1 PULLBACK SYSTEM FOR DRILLING TOOL Public/Granted day:2017-02-16
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