Invention Grant
- Patent Title: Down-the-hole drill hammer having a roller bearing assembly
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Application No.: US15850803Application Date: 2017-12-21
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Publication No.: US10669781B2Publication Date: 2020-06-02
- Inventor: Leland H. Lyon
- Applicant: Center Rock Inc.
- Applicant Address: US PA Berlin
- Assignee: Center Rock Inc.
- Current Assignee: Center Rock Inc.
- Current Assignee Address: US PA Berlin
- Agency: Kim IP Law Group PLLC
- Main IPC: E21B10/22
- IPC: E21B10/22 ; E21B10/38 ; E21B10/44 ; E21B4/14
Abstract:
A down-the-hole drill hammer is provided that includes a housing, a drill bit proximate a distal end of the housing, and a roller bearing assembly. The roller bearing assembly circumscribes the drill bit. The roller bearing assembly includes a race and a plurality of rollers. The plurality of rollers are operatively engaged with the race.
Public/Granted literature
- US20180171720A1 DOWN-THE-HOLE DRILL HAMMER HAVING A ROLLER BEARING ASSEMBLY Public/Granted day:2018-06-21
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