公开(公告)号：US09943945B2

公开(公告)日：2018-04-17

申请号：US14676200

申请日：2015-04-01

Applicant: Jin Fu Chen

Inventor： Jin Fu Chen

IPC: B25B7/10

CPC classification number: B25B7/10

Abstract: A water pipe wrench structure consisting of a first wrench body and a second wrench body pin jointed by a control component. The first wrench body includes an actuating piece. A tooth space is positioned on this actuating piece. This actuating piece and a tooth piece extend with a uniform curvature. The second wrench body includes a perforation to pass the control component through this perforation and the tooth space. This control component includes a column piece and a grinding tooth piece, and the grinding tooth piece can be moved by pressure, so that the grinding tooth piece can be engaged to or separated from the tooth space and thus end the movement of the control component.

公开(公告)号：US20160288298A1

公开(公告)日：2016-10-06

申请号：US14676200

申请日：2015-04-01

Applicant: Jin Fu Chen

Inventor： Jin Fu Chen

IPC: B25B7/10

CPC classification number: B25B7/10

Abstract: A water pipe wrench structure consisting of a first wrench body and a second wrench body pin jointed by a control component. The first wrench body includes an actuating piece. A tooth space is positioned on this actuating piece. This actuating piece and a tooth piece extend with a uniform curvature. The second wrench body includes a perforation to pass the control component through this perforation and the tooth space. This control component includes a column piece and a grinding tooth piece, and the grinding tooth piece can be moved by pressure, so that the grinding tooth piece can be engaged to or separated from the tooth space and thus end the movement of the control component.

Abstract translation: 一种水管扳手结构，由第一扳手主体和由控制部件连接的第二扳手主体销组成。 第一扳手主体包括致动件。 牙齿空间位于该致动片上。 该致动片和齿片以均匀的曲率延伸。 第二扳手主体包括通过该穿孔和牙齿空间使控制部件通过的穿孔。 该控制部件包括柱部件和研磨齿部件，并且可以通过压力移动研磨齿部件，使得研磨齿部件可以与齿部空间接合或分离，从而结束控制部件的移动。

公开(公告)号：US11731246B2

公开(公告)日：2023-08-22

申请号：US17484064

申请日：2021-09-24

Applicant: Jin Fu Chen

Inventor： Jin Fu Chen

IPC: B25B7/14

CPC classification number: B25B7/14

Abstract: A pliers includes a first body with an engaging groove and a second body with an elongated slot pivotally connected with each other. The elongated slot includes a left and right positioning grooves and a protruding portion disposed therebetween. A tap button is pivotally connected to the second body. A supporting member is disposed between the second body and the tap button. When the first body comes close to the second body, the tap button can be tapped to a first position and engaged in the engaging groove. Thus, the first body is blocked and cannot pivot relative to the second body. The tap button can be tapped to a second position and detached from the engaging groove. Thus, the first body is pivotable relative to the second body. A positioning block is extending from the tap button and can be engaged in any of the positioning grooves for positioning the tap button.

公开(公告)号：US20200346331A1

公开(公告)日：2020-11-05

申请号：US16403059

申请日：2019-05-03

Applicant: Jin Fu Chen

Inventor： Jin Fu Chen

IPC: B25B27/20

Abstract: Snap ring pliers include two levers, two posts, and two protruding blocks. The two levers are pivotally connected to each other and relatively pivotable. The two levers each have a control end at a distal end thereof. The two posts are fixed to the control ends of the two levers, respectively. The posts each have a complete surface without a notch. The posts each have a non-circular cross-section and at least one an arris for leaning against a perforation of a snap ring. The two protruding blocks are respectively fixed to distal ends of the two posts for restraining the snap ring from being separated from the posts, thereby controlling the snap ring stably.

公开(公告)号：US11345000B2

公开(公告)日：2022-05-31

申请号：US16419330

申请日：2019-05-22

Applicant: Jin Fu Chen

Inventor： Jin Fu Chen

IPC: B25B7/04 ,  B25B7/10

Abstract: A pliers has guiding surfaces at tooth portions of the first pliers body and tooth portions of the engaging unit of the control member. Therefore, when the pressing block of the control member is not pressed, even if the first pliers body is engaged with the tooth portions of the engaging unit, the second pliers body can still be pushed forward relative to the first pliers body, so that the second guiding surfaces of the second tooth portions of the engaging unit slide relative to the first guiding surfaces of the first tooth portions and each of the first tooth portions is moved to engage with a next corresponding second tooth portion, thereby allowing the second pliers portion being movable toward the first pliers portion. Hence, the clamping distance of the pliers can be adjusted to match with an object to be clamped.

公开(公告)号：US20120098597A1

公开(公告)日：2012-04-26

申请号：US12995279

申请日：2010-10-21

Applicant: ChangMing Wei ,  Yu Zhang ,  Lixin Jiang ,  Jin Fu Chen ,  Jeffrey G. Barrow

Inventor： ChangMing Wei ,  Yu Zhang ,  Lixin Jiang ,  Jin Fu Chen ,  Jeffrey G. Barrow

IPC: H03F3/45 ,  H03K17/687

CPC classification number: H03F3/45475 ,  H03F2203/45534 ,  H03F2203/45536 ,  H03G1/0088 ,  H03K17/063 ,  H03K17/6872 ,  H03K17/6877 ,  H03K2017/066 ,  H03K2217/0054

Abstract: A switch circuit is provided. The switch circuit may include a first transistor having a source terminal to accept an input signal, a drain terminal to provide an output signal, and a gate; a power supply providing a gate voltage. The switch circuit may also include a circuit to couple a switch signal to the gate, wherein the circuit turns the first transistor ‘off’ for all values of the input signal when the switch signal is ‘low.’ A programmable gain amplifier (PGA) is also provided. The PGA may include an input stage having an input node to couple an input signal, and an output node to provide a gate signal, at least a first gain stage including a resistor and a switch circuit as above. A differential gain amplifier may be included to provide an output signal from the gain signal.

Abstract translation: 提供开关电路。 开关电路可以包括具有用于接收输入信号的源极端子的第一晶体管，提供输出信号的漏极端子和栅极; 提供栅极电压的电源。 开关电路还可以包括用于将开关信号耦合到栅极的电路，其中当开关信号为“低”时，该电路使第一晶体管关断输入信号的所有值。可编程增益放大器（PGA） 也提供。 PGA可以包括输入级，其具有用于耦合输入信号的输入节点和输出节点以提供门信号，至少第一增益级包括如上所述的电阻器和开关电路。 可以包括差分增益放大器以从增益信号提供输出信号。

公开(公告)号：US20120011970A1

公开(公告)日：2012-01-19

申请号：US12838083

申请日：2010-07-16

Applicant: Jin Fu Chen

Inventor： Jin Fu Chen

IPC: B25B7/02

CPC classification number: B25B7/08

Abstract: Pliers with a restoring function include an elastic element and two pliers bodies. The elastic element has two urging ends. The two pliers bodies have two pinching heads, two handles, and two pivotal parts. Each of the pivotal parts has a recess and a pivotal hole. A pivotal element goes through the two pivotal holes. The elastic element is disposed in the two recesses and penetrated by the pivotal element. Both urging ends of the elastic element are on opposite sides of the two recesses to urge sidewalls of the recesses, thereby opening the pliers. A buffer region is designed in each of the recesses for the corresponding urging end. When the opening angle of the pliers is greater than that is supported by the elastic element, at least one urging end of the elastic element releases its urging against the recess sidewall and moves in the buffer region. The pliers become relaxed then.

Abstract translation: 具有恢复功能的钳子包括弹性元件和两个钳子体。 弹性元件具有两个推压端。 两个钳子主体有两个夹头，两个手柄和两个枢轴部分。 每个枢转部分具有凹部和枢转孔。 一个关键元素穿过两个枢轴孔。 弹性元件设置在两个凹部中并被枢转元件贯穿。 弹性元件的两个推动端在两个凹部的相对侧上，以推动凹部的侧壁，从而打开钳子。 在相应的推动端的每个凹部中设计缓冲区。 当钳子的打开角度大于由弹性元件支撑的开口角度时，弹性元件的至少一个推动端释放其抵靠凹口侧壁的推动并在缓冲区域中移动。 然后钳子变松了。

公开(公告)号：USD464554S1

公开(公告)日：2002-10-22

申请号：US29156355

申请日：2002-03-01

Applicant: Jin Fu Chen

Designer： Jin Fu Chen

公开(公告)号：US20190270185A1

公开(公告)日：2019-09-05

申请号：US16419330

申请日：2019-05-22

Applicant: Jin Fu Chen

Inventor： Jin Fu Chen

IPC: B25B7/04 ,  B25B7/10

Abstract: A pliers has guiding surfaces at tooth portions of the first pliers body and tooth portions of the engaging unit of the control member. Therefore, when the pressing block of the control member is not pressed, even if the first pliers body is engaged with the tooth portions of the engaging unit, the second pliers body can still be pushed forward relative to the first pliers body, so that the second guiding surfaces of the second tooth portions of the engaging unit slide relative to the first guiding surfaces of the first tooth portions and each of the first tooth portions is moved to engage with a next corresponding second tooth portion, thereby allowing the second pliers portion being movable toward the first pliers portion. Hence, the clamping distance of the pliers can be adjusted to match with an object to be clamped.

公开(公告)号：USD578369S1

公开(公告)日：2008-10-14

申请号：US29287108

申请日：2007-06-28

Applicant: Jin Fu Chen

Designer： Jin Fu Chen