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公开(公告)号：US12209460B2
公开(公告)日：2025-01-28
申请号：US18519763
申请日：2023-11-27
Applicant: Concore BV
Inventor： C. G. van Veldhuisen , Sven Vallgren
Abstract: A method for creating a weep hole is disclosed. The weep hole is drilled in an uncured, concrete, hollow core structural component having one or more external surfaces and one or more internal surfaces. The weep hole is drilled using a drilling apparatus comprising a drill, a rotating drill bit with an internal fluid passageway, a power source, and a pressurized fluid source. Loose, uncured concrete material deposited near the weep hole on the one or more internal surface as a result of drilling the weep hole is removed by releasing pressurized fluid which flows from the pressurized fluid source, through the drill and the rotating drill bit.
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公开(公告)号：US20230358101A1
公开(公告)日：2023-11-09
申请号：US17777424
申请日：2020-10-15
Applicant: Techtronic Cordless GP
Inventor： Koon For Chung , Hui Jian Chen , Xiao Di Lan , Yan Jia Wang , Jonathan Robert Feldkamp , Shuai Shao , Grzegorz Kondro , Richard Michael Mcentyre , Gregory Scott Torrisi , John Eugene McCallum
CPC classification number: E21B10/44 , B28D1/14 , E21B11/005 , B23B2226/75 , B23B2260/096 , B23B2260/122 , B23B2260/128
Abstract: Provided herein is an electric powered digging apparatus comprising: a powerhead, the power head comprises a motor and a gearbox; a handle frame, the powerhead is mounted onto the handle frame; and a drill bit, the drill bit is driven by the motor to rotate around a longitudinal axis, the electric power digging apparatus further comprises: a first safety mechanism, wherein the first safety mechanism reduces torque output to the drill bit when the powerhead spins around the longitudinal axis for an angle larger than a first threshold, and a second safety mechanism, wherein the second safety mechanism reduces torque output to the drill bit when the powerhead spins around the longitudinal drive axis at an angular speed larger than a second threshold FIG. 1
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公开(公告)号：US11213898B2
公开(公告)日：2022-01-04
申请号：US16967964
申请日：2019-02-04
Applicant: KABUSHIKI KAISHA MIYANAGA
Inventor： Masaaki Miyanaga
Abstract: A drilling device for forming an enlarged-diameter hole includes: a guide sleeve with a cylindrical body and a guide to be inserted into a bottomed hole; a slide body that slides in the cylindrical body; and a bit holder provided on the slide body swingably; and a diameter-enlarging bit with a cutting blade. The bit slides between a first position where the cutting blade is separated from a bottom of the bottomed hole and a second position where the cutting blade is closer to the bottom than that at the first position. The guide has: a guide piece that guides the cutting blade to a side part, of the bottomed hole, following an advance of the bit from the first position to the second position; and an opening which allows passage of the bit removed from the bit holder where the bit is at the first position.
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公开(公告)号：US20210308858A1
公开(公告)日：2021-10-07
申请号：US17220583
申请日：2021-04-01
Applicant: C. & E. Fein GmbH
Inventor： Sergej DENZEL , Stefan SCHERRENBACHER
Abstract: A magnetic base for an electric machine tool, in particular for a magnetic core drilling machine. A body that is accommodated in a receiving space. At least one first magnet coil constituting an electromagnet, a coil winding of the at least one first magnet coild being wound on a bobbin and a magnetic force of which is switchable between a maximum resultant holding force and a minimum resultant holding force. The coil winding of the magnet coil has two end sections that are each connected to a connecting cable that serves to make electrical contact between the magnetic coil and the electric machine tool. The body has a first side adapted to be coupled to the electric machine tool and has an opposite second side adapted to be placed on a workpiece that is to be processed. End sections of the coil winding are connected to the connecting cables.
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公开(公告)号：US20210205974A1
公开(公告)日：2021-07-08
申请号：US17058744
申请日：2019-04-26
Applicant: KOKI HOLDINGS CO., LTD.
Inventor： Hideyuki HASHIMOTO , Yuki TAKAHASHI , Hironori MASHIKO , Yuta NOGUCHI
Abstract: A drilling tool includes: a drive source; a bit attachment portion to which an end bit is attachable; a power transmission portion configured to apply a motive force to the end bit attached to the bit attachment portion; an operation portion switchable between an ON-state and an OFF-state by a manual operation and configured to receive a setting operation for setting a stop condition; and a controller configured to set the stop condition based on the setting operation, and to start driving of the drive source in response to a first switching operation for switching the operation portion from the OFF-state to the ON-state. In a state where the stop condition is set, even when the operation portion is in the ON-state, the controller stops driving of the drive source in response to the stop condition being met while the drive source is being driven.
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Patent Agency Ranking
公开(公告)号：US10935065B2
公开(公告)日：2021-03-02
申请号：US15751385
申请日：2016-07-26
Applicant: Hilti Aktiengesellschaft
Inventor： Martin Hartz , Niels Goos , Simon Velten
Abstract: A method for setting a screw, which has an external thread in a front region and a drive in a rear region for introducing a torque into the screw, in a drilled hole in a substrate of a mineral material includes producing an internal thread in the drilled hole by a threaded drill provided with a cutting thread and then introducing the screw into the drilled hole and in so doing the external thread of the screw is screwed into the internal thread, produced by the threaded drill, in the drilled hole. The external diameter of the cutting thread of the threaded drill is smaller than the external diameter of the external thread of the screw.
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公开(公告)号：US10744677B2
公开(公告)日：2020-08-18
申请号：US16315253
申请日：2017-07-04
Applicant: KABUSHIKI KAISHA MIYANAGA
Inventor： Masaaki Miyanaga
Abstract: A hole drilling device for forming an expanded-diameter hole portion at an inner bottom part of a mounting hole includes: a shaft including a contact surface and a tapered surface, and a cutter including a stopper provided on a side surface of the cutter, the stopper coming into contact with a surface of a drilling object. The cutter is movable between a first position and a second position. When the cutter is in the first position, the contact surface is in contact with the inner bottom part of the mounting hole, and the stopper is away from the surface of the drilling object. When the cutter is in the second position, the cutter has been pushed in forward from the first position, the cutting bit has protruded laterally from the tapered surface, and the stopper is in contact with the surface of the drilling object.
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公开(公告)号：US10525536B2
公开(公告)日：2020-01-07
申请号：US15761960
申请日：2016-09-19
Applicant: HILTI AKTIENGESELLSCHAFT
Inventor： Hans-Peter Lederle , Markus Renner , Rainer Strobel-Schmidt , Franz Popp , Peter Ostermeier
IPC: B23B51/00 , B28D1/14 , B23B27/00 , B23P9/02 , B23B29/034
Abstract: A tool for roughening a borehole surface. The tool includes a coupling portion for clamping the tool in a drilling machine; and a tool head for machining the borehole surface, where the tool head comprises a cutter that is circumferentially disposed on the tool head, and where the tool head has at least one slit, which passes through from one side to the other and which, starting from an end face of the tool head, and extends axially along a longitudinal axis of the tool.
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公开(公告)号：US10507534B2
公开(公告)日：2019-12-17
申请号：US15462313
申请日：2017-03-17
Applicant: O-TAGS, INC.
Inventor： Teddy Ohana
Abstract: In one embodiment, a system includes a counterbore drill bit, pre-cut lead rods of predetermined length, and a tapper tool. The counterbore drill bit includes a stop collar to drill counter bored holes with a first hole portion having a first diameter to a first depth below a surface of a material and a second hole portion having a second diameter less than the first to a second depth below the surface. The lead rods are inserted into the counter bored holes. The tapper tool mashes the second end of each lead rod in the one or more counterbored holes to expand and friction fit then in the counter bored holes. The system further includes circular survey tags insertable into the first hole and fasteners with a head and a shaft insertable through a center hole in the survey tags to retain the tags coupled to the lead rods.
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公开(公告)号：US10335980B2
公开(公告)日：2019-07-02
申请号：US15550736
申请日：2016-02-09
Applicant: KABUSHIKI KAISHA MIYANAGA
Inventor： Masaaki Miyanaga
Abstract: A dust suction drill includes: a drill tip with cutting edge portions; a shaft joined to the drill tip and configured to rotate about an axis; and a dust suction passage that is generated when the cutting edge portions rotate, the dust suction passage being formed inside the shaft. The cutting edge portions are provided on a distal end surface of the drill tip and spaced apart from each other in a circumferential direction. Cutting edges, each of which is formed by a joint ridge between a rake face and a relief face of a corresponding one of the cutting edge portions, are arranged radially, and at a center of the drill tip, form a chisel point, which is a pointed end. A dust suction hole, which communicates with the dust suction passage, is formed in the rake face or the relief face closely to the chisel point.
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