公开(公告)号：US11154967B2

公开(公告)日：2021-10-26

申请号：US16572634

申请日：2019-09-17

Applicant: Yi-Fu Chen

Inventor： Yi-Fu Chen

IPC: B25B13/46 ,  B25B13/48

Abstract: A ratchet wrench includes a head with a ratchet wheel, a first pawl unit and a second pawl unit received therein. The first pawl unit includes a first pawl and a second pawl, and the second pawl unit includes a third pawl and a fourth pawl. The first and second pawl units are controlled to be engaged with the ratchet wheel so as to provide sufficient number of teeth to be engaged with the ratchet wheel. The ratchet wrench outputs sufficient torque with a small angle of rotation.

公开(公告)号：US20210146507A1

公开(公告)日：2021-05-20

申请号：US16689079

申请日：2019-11-20

Applicant: Yi-Fu Chen

Inventor： Yi-Fu Chen

IPC: B25B13/46

Abstract: A wrench includes a driving unit located in the head of the wrench. A rod extends through the driving member and includes a stepped recess so as to control a bead in the radial hole of the driving member to secure a socket connected to the driving member. A rotary member is connected to the head and includes a room. A locking member is located in the room and locked to the driving member. A fixing area is formed between the locking member and the driving member so as to fix the locking member and the driving member together. The fixing area ensures that locking member is not separated from the driving member.

公开(公告)号：US10702979B2

公开(公告)日：2020-07-07

申请号：US16048360

申请日：2018-07-30

Applicant: Yi-Fu Chen

Inventor： Yi-Fu Chen

IPC: B25B23/142 ,  B25B23/00

Abstract: A torque adjustment device of a torque wrench includes a handle having a passage defined axially therethrough, and a driving head is connected to one end of the handle. A torque adjustment unit is located in the passage of the handle and includes a stationary member, a threaded shaft threadedly extending through the stationary member, a rotary member and a spring. The shaft includes a threaded rod that extends beyond the rotary member. A sleeve is mounted to the threaded shaft. A rotary unit includes a tube which has a mounting section and a threaded section on two ends thereof. By rotating the tube, the rotary member and the threaded shaft are rotated relative to the stationary member so as to compress the spring to set the output torque value. A knob is then threadedly connected to the threaded rod to secure the output torque value.

公开(公告)号：US20160059390A1

公开(公告)日：2016-03-03

申请号：US14469591

申请日：2014-08-27

Applicant: Yi-Fu Chen

Inventor： Yi-Fu Chen

IPC: B25B13/46

CPC classification number: B25B13/465

Abstract: A ratchet wrench includes a handle having a hole in which a driving unit is located. A control member is partially engaged with the hole and connected to the top of the driving unit. The driving unit has a pawl engaged with the toothed face of the hole of the handle. A bead is movably received in the protrusion of the driving unit and cooperated with an operation rod. The operation rod is connected with a positioning unit located in the circular recess of the control member. The positioning member has a nut, a spring and a press disk. The nut is connected to the connection rod. A flange extends from the top of the nut. The spring is engaged between the flange and the press disk which is movable within the circular recess. A locking member extends through the press disk and is connected to the operation rod.

Abstract translation: 棘轮扳手包括具有驱动单元所在的孔的把手。 控制构件与孔部分接合并连接到驱动单元的顶部。 驱动单元具有与手柄的孔的齿面接合的棘爪。 胎圈可移动地容纳在驱动单元的突起中并与操作杆配合。 操作杆与位于控制构件的圆形凹部中的定位单元连接。 定位构件具有螺母，弹簧和压盘。 螺母连接到连接杆。 凸缘从螺母的顶部延伸。 弹簧接合在凸缘和压盘之间，该压盘可在圆形凹槽内移动。 锁定构件延伸穿过压盘并连接到操作杆。

公开(公告)号：US20150239104A1

公开(公告)日：2015-08-27

申请号：US14188695

申请日：2014-02-25

Applicant: Yi-Fu Chen

Inventor： Yi-Fu Chen

IPC: B25B13/46 ,  B25B23/00

CPC classification number: B25B13/463

Abstract: A ratchet wrench includes a wrench body, a ratchet assembly and a C-ring. The wrench body has a driving head at one end. The driving head has a cavity therein and a retaining groove defined in an inner periphery of the cavity. The ratchet assembly is mounted in the cavity of the driving head. The C-ring is configured to retain the ratchet assembly in place and defines an outer portion and an inner portion. The C-ring has two free ends, and at least one of the two free ends has an oblique face with a pointed edge towards an inside of the C-ring, which is allowed to pry the C-ring moving inward to be detached.

Abstract translation: 棘轮扳手包括扳手主体，棘轮组件和C形环。 扳手主体的一端有一个驱动头。 驱动头在其中具有空腔，并且限定在空腔的内周中的保持槽。 棘轮组件安装在驱动头的空腔中。 C形环构造成将棘轮组件保持在适当位置并且限定外部部分和内部部分。 C形环具有两个自由端，并且两个自由端中的至少一个具有朝向C形环的内侧的尖锐边缘的倾斜面，允许将C形环向内移动以分离。

公开(公告)号：US08724034B2

公开(公告)日：2014-05-13

申请号：US12120071

申请日：2008-05-13

Applicant: Chiao-Chih Chang ,  Yi-Fu Chen ,  Ming-Luen Liou

Inventor： Chiao-Chih Chang ,  Yi-Fu Chen ,  Ming-Luen Liou

IPC: H04N5/46 ,  H04N5/50

CPC classification number: H04N5/4401 ,  H04N5/455 ,  H04N5/46 ,  H04N5/50 ,  H04N21/42638 ,  H04N21/4345 ,  H04N21/4382

Abstract: Apparatuses and methods for scanning channels in a television signal receiver. The apparatuses generally include a first acquisition circuit, a second acquisition circuit, and a controller. The first acquisition circuit is generally configured to determine, during a first time period, whether a selected radio frequency channel has a first format and to produce a first acquisition indicator in response thereto. The second acquisition circuit is generally configured to determine, during a second time period overlapping the first time period, whether the selected radio frequency channel has a second format and to produce a second acquisition indicator in response thereto. The controller is generally configured to scan a plurality of radio frequency channels by operating the first acquisition circuit and the second acquisition circuit for each one of the plurality of radio frequency channels. Embodiments advantageously provides for faster scanning and acquisition of television signals in a mixed-format (e.g., analog and digital) television distribution environment.

Abstract translation: 用于在电视信号接收机中扫描频道的装置和方法。 装置通常包括第一采集电路，第二采集电路和控制器。 第一采集电路通常被配置为在第一时间周期期间确定所选择的射频信道是否具有第一格式，并且响应于此产生第一采集指示符。 第二采集电路通常被配置为在与第一时间段重叠的第二时间段期间确定所选择的射频信道是否具有第二格式，并且响应于此产生第二采集指示符。 控制器通常被配置为通过为多个射频信道中的每个射频信道的每一个操作第一采集电路和第二采集电路来扫描多个射频信道。 实施例有利地提供了以混合格式（例如，模拟和数字）电视分发环境中更快速地扫描和获取电视信号。

公开(公告)号：US08720309B2

公开(公告)日：2014-05-13

申请号：US13568148

申请日：2012-08-07

Applicant: Yi-Fu Chen

Inventor： Yi-Fu Chen

IPC: B25B13/46

CPC classification number: B25B13/465

Abstract: A ratchet wrench having easily assembling structure includes a body, a D-head, a loose ratchet, a heart-shaped spring, a disc and a ring. The body has a head portion. The head portion has a through hole. A plurality of teeth is uniformly defined on the through hole. The D-head is rotatably disposed in the through hole and has a connecting member and a threaded member. The loose ratchet is disposed on the D-head. The heart-shaped spring has a closed tip. The disc is disposed on the head portion. A shouldered hole is opened on the disc. A ring is disposed onto the shouldered hole. The ring is disposed onto the shouldered hole. Under this arrangement, a user engages a tool bit with the connecting member of the present invention to lock a bolt by repeatedly rotating the body of the present invention clockwise/counterclockwise.

Abstract translation: 具有容易组装结构的棘轮扳手包括主体，D头，松动棘轮，心形弹簧，盘和环。 身体有一个头部。 头部具有通孔。 多个齿均匀地限定在通孔上。 D头可旋转地设置在通孔中，并具有连接构件和螺纹构件。 松动棘轮设置在D头上。 心形弹簧有一个封闭的尖端。 盘设置在头部。 盘上打开一个肩孔。 一个环设置在肩孔上。 环设置在肩孔上。 在这种布置下，使用者将工具钻头与本发明的连接构件接合，通过顺时针/逆时针反复旋转本发明的主体来锁定螺栓。

公开(公告)号：US20130213190A1

公开(公告)日：2013-08-22

申请号：US13853035

申请日：2013-03-28

Applicant: Yi-Fu Chen

Inventor： Yi-Fu Chen

IPC: B25B13/46

CPC classification number: B25B13/463 ,  B25B1/02 ,  B25B13/465 ,  B25B15/04 ,  B25B23/0035 ,  B25D2250/105 ,  B25D2250/361

Abstract: A ratchet wrench includes a wrench head, a ratchet assembly and a bushing. The wrench head is made of metal and defines a cavity therein. The ratchet assembly is disposed in the cavity of the wrench head and has an outer configuration corresponding in shape to a periphery of the cavity of wrench head and being slightly smaller than the cavity of the wrench head. The bushing is made of a metal with a hardness greater than that of the wrench head and is fitted in a clearance defined between the ratchet assembly and an inner wall of the cavity of the wrench head. Moreover, the bushing has a substantially consistent thickness so that the bushing has an outer periphery and an inner periphery both corresponding in shape to the periphery of the cavity.

Abstract translation: 棘轮扳手包括扳手头，棘轮组件和衬套。 扳手头由金属制成并在其中限定一个空腔。 棘轮组件设置在扳手头的空腔中，并且具有与扳手头的空腔的周边形状对应的外形，并且略小于扳手头的腔。 衬套由硬度大于扳手头的硬度的金属制成，并且被装配在棘轮组件和扳手头的腔的内壁之间限定的间隙中。 此外，衬套具有基本上一致的厚度，使得衬套具有外形和外周两者都对应于腔的周边。

公开(公告)号：US20120297935A1

公开(公告)日：2012-11-29

申请号：US13568148

申请日：2012-08-07

Applicant: Yi-Fu Chen

Inventor： Yi-Fu Chen

IPC: B25B13/46

CPC classification number: B25B13/465

Abstract: A ratchet wrench having easily assembling structure includes a body, a D-head, a loose ratchet, a heart-shaped spring, a disc and a ring. The body has a head portion. The head portion has a through hole. A plurality of teeth is uniformly defined on the through hole. The D-head is rotatably disposed in the through hole and has a connecting member and a threaded member. The loose ratchet is disposed on the D-head. The heart-shaped spring has a closed tip. The disc is disposed on the head portion. A shouldered hole is opened on the disc. A ring is disposed onto the shouldered hole. The ring is disposed onto the shouldered hole. Under this arrangement, a user engages a tool bit with the connecting member of the present invention to lock a bolt by repeatedly rotating the body of the present invention clockwise/counterclockwise.

Abstract translation: 具有容易组装结构的棘轮扳手包括主体，D头，松动棘轮，心形弹簧，盘和环。 身体有一个头部。 头部具有通孔。 多个齿均匀地限定在通孔上。 D头可旋转地设置在通孔中，并具有连接构件和螺纹构件。 松动棘轮设置在D头上。 心形弹簧有一个封闭的尖端。 盘设置在头部。 盘上打开一个肩孔。 一个环设置在肩孔上。 环设置在肩孔上。 在这种布置下，使用者将工具钻头与本发明的连接构件接合，通过顺时针/逆时针反复旋转本发明的主体来锁定螺栓。

公开(公告)号：US08031103B2

公开(公告)日：2011-10-04

申请号：US12870284

申请日：2010-08-27

Applicant: Yi-Fu Chen ,  Ming-Luen Liou ,  Cheng-I Wei ,  Chun Hua Ho

Inventor： Yi-Fu Chen ,  Ming-Luen Liou ,  Cheng-I Wei ,  Chun Hua Ho

IPC: H03M1/50

CPC classification number: H03M1/1255 ,  H03J1/0008

Abstract: A digitizer includes an analog to digital converter (ADC), a sampling frequency generator, and a controller. The ADC samples an IF signal to generate a digital signal. The sampling frequency generator is connected to the ADC and provides a sampling clock of variable frequency to the ADC. The controller is connected to the sampling frequency generator and determines frequency of the sampling clock.

Abstract translation: 数字转换器包括模数转换器（ADC），采样频率发生器和控制器。 ADC对IF信号进行采样以产生数字信号。 采样频率发生器连接到ADC，并向ADC提供可变频率的采样时钟。 控制器连接到采样频率发生器并确定采样时钟的频率。