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1. 外观设计

USD496948S1 Square drill bit 失效
标题翻译：方钻头
公开(公告)号：USD496948S1
公开(公告)日：2004-10-05
申请号：US29183431
申请日：2003-06-12
申请人： Luc Charland , Roger Charland
设计人： Luc Charland , Roger Charland

2. 发明授权

US07182156B2 System for overburden drilling 有权
标题翻译：上覆钻井系统
公开(公告)号：US07182156B2
公开(公告)日：2007-02-27
申请号：US10459465
申请日：2003-06-12
申请人： Luc Charland , Roger Charland
发明人： Luc Charland , Roger Charland
IPC分类号： E21B10/64
CPC分类号： E21B7/20 , E21B10/40 , E21B10/64
摘要： The present invention provides a global drilling system comprising a crown bit, a driver drill bit and a square drill bit. The crown bit has a tubular body with an inner surface and an outer surface, wherein the inner surface circumscribes a hollow passageway, and a pair of projections extending into said hollow passageway. The pair of projections are positioned substantially opposite one another on said inner surface. The driver drill bit has a drilling head with a pair of cut-away portions positioned substantially opposite one another and a pair of locking surfaces adapted for engaging the projections on the crown bit. The square drill bit has a drilling head with two tapered cut-away portions positioned substantially opposite one another. Each cut-away portion corresponds to one of the pair of projections such that the drilling head is able to pass through the hollow passageway of the crown bit.
摘要翻译：本发明提供了一种全球钻井系统，其包括冠位，驱动钻头和方钻头。冠形钻头具有内表面和外表面的管状体，其中内表面围绕中空通道，以及延伸到所述中空通道中的一对突起。所述一对突起在所述内表面上彼此基本相对地定位。驾驶员钻头具有钻头，其具有基本上彼此相对定位的一对切割部分，以及适于接合牙冠钻头上的突起的一对锁定表面。方形钻头具有钻头，其具有基本上彼此相对定位的两个锥形切割部分。每个切割部分对应于一对突起中的一个，使得钻头能够穿过冠状钻头的中空通道。

3. 发明授权

US11499376B2 Drilling system and method of using same 有权
公开(公告)号：US11499376B2
公开(公告)日：2022-11-15
申请号：US16633421
申请日：2018-07-24
申请人： Luc Charland
发明人： Luc Charland
IPC分类号： E21B10/62 , E21B10/32 , E21B3/00 , E21B7/20 , E21B17/046
摘要： A drilling system having retractable wings and method of using same. The system includes at least one wing, which can extend from the system once it engages in a casing and abuts against an abutment ring at the bottom end of the casing. When the system starts drilling a hole into the ground, the casing is installed down the hole. In one configuration, the at least one wing is at least partially retracted into the drilling system and locked in this position. In another configuration, the at least one wing extends from the drilling system and locks into an extended position. The system can be connected to a down-the-hole hammer, a top-hammer drilling rod, or any other suitable rock drilling tool/apparatus, and can be used with a single and a dual rotary drilling tool/apparatus.

4. 外观设计

USD505435S1 Crown bit 失效
标题翻译：冠位
公开(公告)号：USD505435S1
公开(公告)日：2005-05-24
申请号：US29183430
申请日：2003-06-12
申请人： Luc Charland , Roger Charland
设计人： Luc Charland , Roger Charland

5. 外观设计

USD504141S1 Driver drill bit 失效
标题翻译：司机钻头
公开(公告)号：USD504141S1
公开(公告)日：2005-04-19
申请号：US29183429
申请日：2003-06-12
申请人： Luc Charland , Roger Charland
设计人： Luc Charland , Roger Charland

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