公开(公告)号：US20220128328A1

公开(公告)日：2022-04-28

申请号：US17568660

申请日：2022-01-04

申请人： Chi-Chang Liu

发明人： Chi-Chang Liu

IPC分类号： F41B5/12

摘要： A crossbow includes a magazine mounted to the top of the barrel of the crossbow and located above the flight groove of the crossbow. A storage space is formed through the magazine so as to accommodate multiple arrows therein. A retainer is located in the storage space, and resiliently normally presses the arrows in the storage space so that the users shoots the arrows one by one. The retainer is a resilient and an elongate part, an elongate plate cooperated with a spring, or a block cooperated with multiple springs. The retainer can be pulled or pivoted upward to allow the arrows to be fed into the storage space.

公开(公告)号：US20220128327A1

公开(公告)日：2022-04-28

申请号：US17377383

申请日：2021-07-16

申请人： Chi-Chang Liu

发明人： Chi-Chang Liu

IPC分类号： F41B5/12

摘要： A crossbow includes a barrel having a flight section and a head. The head includes a main part and two extensions extending laterally from the main part. The main part is detachably connected to the flight section. Two cam units each include two first limb connected to the two extensions, and two cams. Two second limbs each are a curved limb and have a first end and a second end. The two first ends of the two second limbs are respectively and directly connected to two sides of the flight section or the head. A first string is wrapped around and connected between the two cams. Two second strings are connected between the cams and the second end of the second limbs. The weight center of the crossbow is located close to the user's body and is benefit for operating the crossbow with high balance and accuracy.

公开(公告)号：US11274897B2

公开(公告)日：2022-03-15

申请号：US16550186

申请日：2019-08-24

申请人： Philip S. Liu ,  Chi-Chang Liu

发明人： Philip S. Liu ,  Chi-Chang Liu

IPC分类号： F41A33/02 ,  F41A31/02

摘要： A simulation laser training cartridge for dry-firing practice adapts to the wear condition of a given firearm and provides a convenient way of measuring the barrel erosion. The cartridge uses multiple adjustable interfacing parts that can be applied selectively and independently according to the condition of the barrel to ensure a snug fit in 3-dimensions. In a 2-unit kit embodiment of the invention, the muzzle unit can work with multiple chamber units for a multi-chamber firearm. The cartridge also includes internal modules for laser property management, status monitoring, movement tracking, memory, and communication to help a user manage the device and allow for advanced training applications. By changing the laser property, the laser training cartridge can work as a bore sight. The cartridge may further include a means to attach an external part, so the external part comprises a means to distinguish a longitudinal position inside said barrel.

公开(公告)号：US11193727B1

公开(公告)日：2021-12-07

申请号：US17103886

申请日：2020-11-24

申请人： Chi-Chang Liu

发明人： Chi-Chang Liu

IPC分类号： F41B5/12 ,  F41B5/00

摘要： A crossbow includes a barrel with a flight groove, and a bow. A magazine is mounted to the body and located above the flight groove. A passage is defined through the magazine for accommodating multiple arrows therein. A slot is formed between the magazine and the flight groove. A string of the bow movably extends through the slot. An arm is pivotably located in the passage and includes a hook end which normally presses on a top-most arrow of the arrows in the magazine. When no arrow is in the magazine, the hook end is inserted into the slot and the user cannot successfully cock the string because the string is stopped by the hook end, so that the user is acknowledged that there is no arrow in the magazine.

公开(公告)号：US20210048270A1

公开(公告)日：2021-02-18

申请号：US16935197

申请日：2020-07-22

申请人： Chi-Chang Liu

发明人： Chi-Chang Liu

IPC分类号： F41B5/14

摘要： A crossbow includes a body, a grip portion, an aim device rack, a stock connected to the rear end of the body, and two support devices connected to two sides of the front end of the body. Each support device includes a first block and a second block. The first block is fixed to the body. The second block is pivotably connected to the first block. Two plates are connected to the second block. Each plate includes a curved slot. Two bolts movably extend through the two curved slots and the first block so that the second blocks are pivotable relative to the first blocks. Each second block includes an inclined face including a low end is located corresponding to the aim device rack, and a high end located corresponding to the grip portion. The crossbow is positioned between a first position and a second position with a weight balance.

公开(公告)号：US20210048269A1

公开(公告)日：2021-02-18

申请号：US16541178

申请日：2019-08-15

申请人： Chi-Chang Liu

发明人： Chi-Chang Liu

IPC分类号： F41B5/14

摘要： A crossbow includes a body, a grip portion, an aim device rack, a stock connected to the rear end of the body, and two support devices connected to two sides of the front end of the body. Each support device includes an inclined face including a low end is located corresponding to the aim device rack, and a high end located corresponding to the grip portion. The crossbow can be positioned between a first position where the two respective high ends contact the ground and an angle is formed between the inclined face of each support device and the ground, and a second position where both of the high end and the low end of each of the two inclined faces contact the ground. When the body changes from the first position to the second position, the grip portion and the aim device rack reach a weight balance.

公开(公告)号：US10663249B1

公开(公告)日：2020-05-26

申请号：US16248701

申请日：2019-01-15

申请人： Chi-Chang Liu

发明人： Chi-Chang Liu

IPC分类号： F41B5/12

摘要： A crossbow includes a barrel, a cocking device, a bow device, a link device and a cartridge. The retention member is moved by the operation of the string of the bow device. The cocking device detachably holds the string. By repeatedly operating the link device and pulling the trigger, the cocking device is moved back and forth repeatedly, and the retention member moves back and forth to control the restriction member to pivot so that the bullets continuously drop to the groove and located in front of the retention member. Therefore, the crossbow can shoot the bullets continuously. The bullets are allowed to be fed into the cartridge one time of feeding.

公开(公告)号：US10378853B1

公开(公告)日：2019-08-13

申请号：US16197378

申请日：2018-11-21

申请人： Chi-Chang Liu

发明人： Chi-Chang Liu

IPC分类号： F41B5/12 ,  F41B5/14

摘要： A crossbow includes a barrel, a retention unit, a link unit and a positioning unit. When the second link pivots toward the restriction member, the rod is moved with the slot of the restriction member, and the restriction member is pivoted relative to the second link. The pivotal action of the first link drives the retention unit to move in the arrow track and toward the bow. On the contrary, when the retention unit is connected to the bow, the second link is moved to its initial position, and the rod is engaged with the serrated portion to form a stand-by status. When the second link continuously pivots to disengage the rod from the serrated portion, the second link is engaged with the handle to form a completion status. During the cocking action, the users may have multiple stages of action to cock the crossbow.

公开(公告)号：US20150104778A1

公开(公告)日：2015-04-16

申请号：US14512333

申请日：2014-10-10

申请人： CHI-CHANG LIU ,  PHILIP LIU

发明人： CHI-CHANG LIU ,  PHILIP LIU

IPC分类号： G09B7/04 ,  G09B5/08 ,  G09B5/02

CPC分类号： G09B7/04 ,  G09B5/02 ,  G09B5/08

摘要： A computerized interactive learning system includes a display device and a compatible input device. The display device provides work items to a learner. The input device detects input activities from the learner in response to the work item. The system analyzes the input activities at two or more tiered levels of granularity. The display device provides conditional feedback to the learner based on the analysis. The input device and the display device can be incorporated into an integrated touchscreen.

摘要翻译： 计算机化的交互式学习系统包括显示设备和兼容的输入设备。 显示设备向学习者提供工作项目。 输入设备响应于工作项目检测来自学习者的输入活动。 系统以两个或多个分层级别的粒度分析输入活动。 显示设备基于分析向学习者提供条件反馈。 输入设备和显示设备可以并入集成的触摸屏中。

公开(公告)号：US20070202909A1

公开(公告)日：2007-08-30

申请号：US11674627

申请日：2007-02-13

申请人： Chi-Chang Liu

发明人： Chi-Chang Liu

IPC分类号： H04B7/00

CPC分类号： H04W4/10 ,  H04L65/1016 ,  H04L65/4061 ,  H04W76/45

摘要： A method makes it possible to establish PTT connections among mobile communication devices that belong to different service groups of different servers. The mobile communication devices are capable of directly transmitting signals and data to each other in a peer-to-peer manner according to session initiation protocol (SIP). The permission to speak is transferred among the mobile communication devices by transmitting specific signals according to predetermined paths of signal delivery.

摘要翻译： 一种方法可以在属于不同服务器的不同服务组的移动通信设备之间建立PTT连接。 移动通信设备能够根据会话发起协议（SIP）以对等方式直接发送信号和数据。 通过根据预定的信号传递路径发送特定信号，在移动通信设备之间传送许可。