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1. 发明公开

US20240116157A1 IMPULSE DRIVER 审中-公开
公开(公告)号：US20240116157A1
公开(公告)日：2024-04-11
申请号：US18539707
申请日：2023-12-14
申请人： MILWAUKEE ELECTRIC TOOL CORPORATION
发明人： Nathan Bandy , Troy C. Thorson , Jeffrey M. Wackwitz
IPC分类号： B25B21/02 , B25B23/145
CPC分类号： B25B21/02 , B25B23/1453
摘要： A power tool includes a housing, a motor positioned within the housing, a controller electrically coupled to the motor, and a transmission coupled to the motor. The transmission includes a ring gear and a torque transducer coupled to the ring gear. The torque transducer is configured to transmit a torque value to the controller. The power tool further including an impulse assembly coupled to the transmission to receive torque therefrom. The controller is configured to receive a target output torque value and to determine an actual output torque based at least in part on the torque value from the torque transducer, and the controller is configured to stop operation of the motor in response to the actual output torque being within a predefined margin of the target output torque value.

2. 发明授权

US11890710B2 Multiplex bolting tool 有权
公开(公告)号：US11890710B2
公开(公告)日：2024-02-06
申请号：US16968405
申请日：2018-02-23
申请人： Heico Befestigungstechnik GmbH
发明人： Stefan Vornweg
IPC分类号： B23P19/06 , B25B21/00 , B25B23/145
CPC分类号： B23P19/069 , B23P19/061 , B23P19/065 , B25B21/002 , B25B23/145
摘要： A torque wrench for multiple bolts or nuts comprises multiple drive spindles that are arranged annularly around a center and are equipped or able to be equipped at the end with respective torque-applying tools, and a ratchet drive, associated with each drive spindle and driven by means of a hydraulic piston drive, for driving the drive spindles. In addition to the ratchet drive, a locking ratchet for locking the drive spindle acts on each drive spindle to keep it from turning back when exercising a return stroke movement of the drive ratchet. The locking ratchets are arranged in a locking bracket, which is penetrated by the drive spindles. The locking bracket has means for loosening the locking ratchets.

3. 发明公开

US20230339082A1 HAZARD DETECTION FOR TORQUE WRENCH 审中-公开
公开(公告)号：US20230339082A1
公开(公告)日：2023-10-26
申请号：US18026764
申请日：2021-10-15
申请人： ENERPAC TOOL GROUP CORP.
发明人： Robin SHAW , Andrew DUMELOW
IPC分类号： B25B23/145 , B25F5/00 , G05B19/042
CPC分类号： B25B23/1456 , B25F5/005 , G05B19/042 , B25B21/005
摘要： A hydraulic torque wrench and method of operation. The wrench may include a housing supporting a drive element for engaging a fastener; a drive actuator for exerting a torque on the drive element; a sensor configured to sense movement of the housing; and a controller having an electronic processor, the controller being configured to receive a first signal from the sensor, determine, based on the signal, whether the housing is moving, and inhibit operation of the drive actuator in response to the housing of the hydraulic torque wrench moving.

4. 发明申请

US20220105610A1 IMPULSE DRIVER 有权
公开(公告)号：US20220105610A1
公开(公告)日：2022-04-07
申请号：US17550719
申请日：2021-12-14
申请人： MILWAUKEE ELECTRIC TOOL CORPORATION
发明人： Nathan Bandy , Troy C. Thorson , Jeffrey M. Wackwitz
IPC分类号： B25B21/02 , B25B23/145
摘要： A power tool includes a housing, a motor positioned within the housing, and an impulse assembly coupled to the motor to receive torque therefrom. The impulse assembly includes a cylinder at least partially forming a chamber containing a hydraulic fluid, an anvil positioned at least partially within the chamber, and a hammer positioned at least partially within the chamber. The hammer includes a first side facing the anvil and a second side opposite the first side. The impulse assembly further includes a biasing member biasing the hammer towards the anvil, and a valve movable between a first position that permits a first fluid flow rate of the hydraulic fluid in the chamber from the second side to the first side, and a second position that permits a second fluid flow rate of the hydraulic fluid in the chamber from the first side to the second side.

5. 发明申请

US20220097215A1 IMPULSE DRIVER 有权
公开(公告)号：US20220097215A1
公开(公告)日：2022-03-31
申请号：US17487451
申请日：2021-09-28
申请人： MILWAUKEE ELECTRIC TOOL CORPORATION
发明人： Hugh A. Dales , Michael A. Verhagen , Troy C. Thorson
IPC分类号： B25B21/02 , B25B23/145
摘要： A power tool includes a housing, a motor positioned within the housing, and an impulse assembly coupled to the motor to receive torque therefrom. The impulse assembly including a cylinder at least partially forming a chamber containing a hydraulic fluid, an anvil positioned at least partially within the chamber, and a hammer positioned at least partially within the chamber and engageable with the anvil for transferring rotational impacts to the anvil. The hammer includes a surface facing the anvil, a first through hole formed in the surface and a second through hole formed in the surface. The impulse assembly further includes a biasing member biasing the hammer towards the anvil. The flow of the hydraulic fluid through the first through hole varies as the hammer translates away from the anvil.

6. 发明授权

US11260515B2 Oil unit for impact power tool 有权
公开(公告)号：US11260515B2
公开(公告)日：2022-03-01
申请号：US16655556
申请日：2019-10-17
申请人： MAKITA CORPORATION
发明人： Yoshihiro Ito
IPC分类号： B25B21/02 , B25F5/00 , H02K9/06 , B25B21/00 , B25B23/145 , H02K7/116
摘要： A rotary power tool, such as an oil pulse driver, includes: a motor, a pinion rotated by the motor, planet gears that mesh with the pinion, an internal gear that meshes with the planet gears and a shaft that is rotationally driven by the planet gears and disposed frontward of the planet gears. The internal gear comprises an internal gear part and an internal gear retaining part for holding the internal gear part. An oil unit bearing is disposed frontward of the internal gear part, and the oil unit bearing is held at a front part of the internal gear retaining part.

7. 发明授权

US11253983B2 Torque screwdriver device 有权
公开(公告)号：US11253983B2
公开(公告)日：2022-02-22
申请号：US16734927
申请日：2020-01-06
申请人： SHIN YING ENTPR CO., LTD.
发明人： Wen-Hung Chiang
IPC分类号： B25B23/14 , B25B23/00 , B25B23/145 , B25B23/142 , B25B23/147
摘要： A torque screwdriver device is provided, including: a housing, including a barrel and a cover coveringly connected with the barrel; an input shaft portion, rotatably assembled with the barrel; an output shaft portion, rotatably assembled with the barrel and including a socket mechanism; a torque clutch mechanism, including a first engaging portion disposed on the input shaft portion and a second engaging portion disposed on the output shaft portion, an elastic preload member biasing one of the first and second engaging portions, and a first bearing mechanism, the first bearing mechanism including a stop member abutted against the housing, a support member and at least one low friction member disposed between the stop member and the support member, at least one of the stop member and the support member being movable relative to the at least one low friction member.

8. 发明申请

US20210031342A1 ROTARY IMPACT TOOL 有权
公开(公告)号：US20210031342A1
公开(公告)日：2021-02-04
申请号：US16915068
申请日：2020-06-29
申请人： MAKITA CORPORATION
发明人： Koji TAKAHAGI
IPC分类号： B25B23/145 , B25B21/02 , B25B21/00
摘要： Torque produced in an oil unit is leveled irrespective of the temperature variation to maintain intended operation efficiency. An impact driver includes a brushless motor, and an oil unit rotatable by the brushless motor. The oil unit includes a case including a projection inside, a spindle protruding from the case, a coil spring held at the spindle in the case, and a blade held at the spindle in the case and urged outward in a radial direction of the case by the coil spring. The blade comes in contact with the projection in a rotation direction of the case.

9. 发明授权

US10850375B2 Clamp force estimation via pulsed tightening 有权
公开(公告)号：US10850375B2
公开(公告)日：2020-12-01
申请号：US16305561
申请日：2017-05-30
申请人： ATLAS COPCO INDUSTRIAL TECHNIQUE AB
发明人： Adam Klotblixt
IPC分类号： B25B23/147 , B25B23/145 , B23P19/06 , B25B21/02 , F16D66/00 , F16H61/32
摘要： A method for estimating a clamp force obtained at tightening of a screw joint via a torque pulse sequence includes applying a primary torque pulse to rotate the screw joint in a tightening direction, measuring a torque level obtained by the primary torque pulse, applying a secondary torque pulse to move the screw joint in a loosening direction, measuring a torque level obtained by the secondary torque pulse, and calculating a difference between the torque level obtained by the primary torque pulse and the torque level obtained by the secondary torque pulse. The obtained clamp force is estimated from the difference between the obtained torque levels.

10. 发明申请

US20200223256A1 IMPACT TOOL 审中-公开
公开(公告)号：US20200223256A1
公开(公告)日：2020-07-16
申请号：US16246657
申请日：2019-01-14
申请人： DINO PAOLI S.R.L.
发明人： Patrizia PAOLI , Federico GALLONI , Emanuele BORSETTO
IPC分类号： B60B29/00 , B25B23/145 , B25D9/06
摘要： An impact tool comprises: a casing; a rotating hammer arranged in the casing and rotatable by a motor; a rotating interface element arranged in the casing and rotatable by the hammer by a series of impacts; an output shaft rotating around a rotation axis, the output shaft having a proximal end fixed to the interface element and a distal end protruding from the casing, the distal end ending with a connecting element for removable connection to an outer mechanical adaptor; a unit of measurement arranged for obtaining torque of the output shaft by a torque sensor mounted to the output shaft, the unit of measurement comprising a fixed measuring assembly mounted integrally to the casing and a rotating measuring assembly mounted so as to rotate integrally with the rotating output shaft; the fixed measuring assembly being configured to generate a supply signal and transmit the supply signal to the rotating measuring assembly to supply electrically the rotating measuring assembly; the rotating measuring assembly being configured to detect a measuring signal indicating the torque and condition the measuring signal in order to be able to send the measuring signal to the fixed measuring assembly; in which the fixed measuring assembly and the rotating measuring assembly comprise electronic devices that execute a two-directional communication in contactless mode by magnetic coupling between the fixed measuring assembly and the rotating measuring assembly, the communication being configured to supply magnetically the torque sensor and permit transmission of the measuring signal conditioned by the rotating measuring assembly to the fixed measuring assembly.

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