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：US06226822B1

公开(公告)日：2001-05-08

申请号：US09425183

申请日：1999-10-25

Applicant: Jin-Fu Chen

Inventor： Jin-Fu Chen

IPC: B25B722

CPC classification number: B25F1/003

Abstract: A tool structure including two grips and a tool head. By way of an opening of a first pivot section of the grip, the first pivot sections of the grips can be separated, permitting the grips to be folded to two sides of the tool head. This reduces the room occupied by the tool and facilitates storage and carriage of the tool. The first pivot sections of the grips are spaced from the second pivot sections of the tool head by a certain distance to form a double-lever structure and prolong the length of the force application arm so as to save strength.

Abstract translation: 包括两个把手和工具头的工具结构。 通过手柄的第一枢转部分的开口，夹具的第一枢转部分可以分离，允许把手被折叠到工具头的两侧。 这减少了工具占据的空间，并且便于存储和运送工具。 夹具的第一枢转部分与工具头的第二枢转部分间隔一定距离以形成双杠杆结构并延长施加力臂的长度以节省强度。

公开(公告)号：US6131495A

公开(公告)日：2000-10-17

申请号：US333020

申请日：1999-06-15

Applicant: Jin-Fu Chen

Inventor： Jin-Fu Chen

IPC: B25B7/00 ,  B25B7/02

CPC classification number: B25B7/00

Abstract: A tool includes two grips and at least one tool head. The grips can be opened to different extents so as to rotate the fixing pins of the grips relative to the openings of the tool head. Accordingly, the short sides of the fixing pins can be respectively aligned with the openings to permit the detachment of the grips from the tool head. Otherwise, the grips are stopped by the long sides of the fixing, pins from detaching from the tool head. The grips can be easily and quickly assembled with or disassembled from the tool head. In addition, the replacement of the tool head can be performed by hand without using any tool or switch. Also, the tool has fewer components which are not easy to miss.

Abstract translation: 一个工具包括两个把手和至少一个工具头。 把手可以打开到不同的程度，以便使把手的固定销相对于工具头的开口旋转。 因此，固定销的短边可以分别与开口对准，以允许把手从工具头部脱离。 否则，夹具被固定的长边挡住，销从工具头脱离。 手柄可以方便快捷地与工具头组装或拆卸。 此外，可以手工更换刀头，而不使用任何刀具或开关。 此外，该工具具有较少的组件，这是不容易错过的。

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：US07396519B2

公开(公告)日：2008-07-08

申请号：US10764681

申请日：2004-01-26

Applicant: Kaung-Far Lin ,  Jin-Fu Chen ,  Wei Te Lin ,  Ruey-Shing Chen ,  Kung-Chin Kuo

Inventor： Kaung-Far Lin ,  Jin-Fu Chen ,  Wei Te Lin ,  Ruey-Shing Chen ,  Kung-Chin Kuo

IPC: C01B21/00

CPC classification number: C01B21/1445 ,  C01B21/1463 ,  C01B21/149

Abstract: A high purity aqueous solution of hydroxylamine product is prepared by treating an aqueous solution of hydroxylammonium salt with a base like ammonia at low temperatures. A novel process can be carried out by separating the ammonium salt side product from hydroxylamine with a low temperature filtration and a resin-exchange process. The concentration of the hydroxylamine product is further improved by a safe distillation process that produces a high purity and high concentration hydroxylamine product with reduced risks of explosion.

Abstract translation: 羟胺产物的高纯度水溶液通过在低温下用氨如氨基处理羟基铵盐水溶液来制备。 可以通过低温过滤和树脂交换过程将铵盐副产物与羟胺分离来进行新的方法。 通过安全蒸馏方法进一步提高了羟胺产物的浓度，该方法产生具有降低的爆炸危险的高纯度和高浓度的羟胺产物。

公开(公告)号：US20050163694A1

公开(公告)日：2005-07-28

申请号：US10764681

申请日：2004-01-26

Applicant: Kaung-Far Lin ,  Jin-Fu Chen ,  Wei Lin ,  Ruey-Shing Chen ,  K. Kuo

Inventor： Kaung-Far Lin ,  Jin-Fu Chen ,  Wei Lin ,  Ruey-Shing Chen ,  K. Kuo

IPC: C01B21/14 ,  C07C239/20 ,  C01C1/00

CPC classification number: C01B21/1445 ,  C01B21/1463 ,  C01B21/149

Abstract: A high purity aqueous solution of hydroxylamine product is prepared by treating an aqueous solution of hydroxylammonium salt with a base like ammonia at low temperatures. A novel process can be carried out by separating the ammonium salt side product from hydroxylamine with a low temperature filtration and a resin-exchange process. The concentration of the hydroxylamine product is further improved by a safe distillation process that produces a high purity and high concentration hydroxylamine product with reduced risks of explosion.

Abstract translation: 羟胺产物的高纯度水溶液通过在低温下用氨如氨基处理羟基铵盐水溶液来制备。 可以通过低温过滤和树脂交换过程将铵盐副产物与羟胺分离来进行新的方法。 通过安全蒸馏方法进一步提高了羟胺产物的浓度，该方法产生具有降低的爆炸危险的高纯度和高浓度的羟胺产物。

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。