公开(公告)号：US08191328B1

公开(公告)日：2012-06-05

申请号：US13021081

申请日：2011-02-04

Applicant: David C. Liu

Inventor： David C. Liu

IPC: E04B2/00 ,  E04C3/00 ,  E04D1/00 ,  E04F13/08

CPC classification number: E04F15/04 ,  E04F15/107 ,  E04F2201/0115 ,  E04F2201/02 ,  E04F2201/025 ,  E04F2201/027

Abstract: A hardwood floor with a flexible locking mechanism is disclosed. The floor board has a male locking apparatus on one end and a female locking apparatus on the opposite end. Two adjacent floor boards are engaged by sliding the male locking apparatus of one floor board into the female locking apparatus of an adjacent floor board. The female locking apparatus includes a flexible lower lip that moves downward when the male locking apparatus engages the female locking apparatus.

Abstract translation: 公开了一种具有柔性锁定机构的硬木地板。 地板在一端具有一个阳锁定装置，在另一端具有一个阴锁装置。 通过将一个地板的阳锁定装置滑动到相邻地板的阴锁定装置中，两个相邻的地板卡合。 阴锁定装置包括当阳锁定装置接合阴锁定装置时向下移动的柔性下唇缘。

公开(公告)号：US08029880B2

公开(公告)日：2011-10-04

申请号：US12109158

申请日：2008-04-24

Applicant: David C. Liu

Inventor： David C. Liu

IPC: F16B5/07

CPC classification number: E04F15/02 ,  E04B5/12 ,  E04F15/048 ,  E04F2201/021 ,  E04F2201/042 ,  E04F2201/043 ,  F16B5/0012 ,  Y10T428/17 ,  Y10T428/192 ,  Y10T428/195

Abstract: A water resistant floor board comprises a top layer, a tongue connector, a groove connector, a body, and a bottom layer. The body is made from a man-made material and placed between the tongue connector and the groove connector, and the top layer is placed above the body, the tongue connector, and the groove connector. The bottom layer is a moisture resistant aluminum foil covering the body, the tongue connector, and the groove connector. The tongue and groove connectors are made from moisture resistant solid wood, and the body is made from man-made material. The top layer has a moisture resistant coating.

Abstract translation: 防水地板包括顶层，舌连接器，凹槽连接器，主体和底层。 身体由人造材料制成，放置在舌头连接器和凹槽连接器之间，顶层放置在身体，舌头连接器和凹槽连接器的上方。 底层是覆盖主体，舌连接器和凹槽连接器的防潮铝箔。 舌头和沟槽连接器由防潮实心木制成，身体由人造材料制成。 顶层具有防潮涂层。

公开(公告)号：US20090151290A1

公开(公告)日：2009-06-18

申请号：US11956057

申请日：2007-12-13

Applicant: David C. Liu

Inventor： David C. Liu

IPC: E04F15/02 ,  E04B5/00

CPC classification number: E04F15/04 ,  E04F2201/0153 ,  E04F2201/0517

Abstract: A locking system for floor boards comprises a plurality of floor boards and a plurality of locking devices. Each floor board has two tongues on one lateral side and another tongue and a locking groove on the opposite lateral side. The floor board also has two grooves on its bottom side. The locking device has three protruding gripping extensions. Few locking devices are placed on each floor board before the floor boards are sent to a job site. At the job site, two adjacent floor boards are assembled together by inserting the tongue of one board into a space defined by the locking device and the tongues of the adjacent board. The tongues are further secured in place by compression of flexible buffers located at each protruding gripping extension.

Abstract translation: 用于地板的锁定系统包括多个地板和多个锁定装置。 每个地板板在一个侧面上具有两个舌片，在另一个侧面上具有另一个舌片和锁定槽。 地板底部也有两个凹槽。 锁定装置具有三个突出的夹紧延伸部。 在将地板发送到作业现场之前，几个锁定装置都放在每个地板上。 在作业现场，通过将一个板的舌插入由锁定装置和相邻板的舌部限定的空间中，将两个相邻的地板组装在一起。 舌片通过位于每个突出夹持延伸部处的柔性缓冲器的压缩被进一步固定就位。

公开(公告)号：US4269439A

公开(公告)日：1981-05-26

申请号：US61921

申请日：1979-07-30

Applicant: James M. Warwick ,  David C. Liu

Inventor： James M. Warwick ,  David C. Liu

IPC: E05C17/36 ,  E05C19/10

CPC classification number: E05C17/36 ,  Y10T292/087

Abstract: A door holdback device holds a door or panel in open position. It may be mounted upon the wall of a conventional boxlike highway trailer and is automatically retractable to an inoperative position. The holdback device has a primary wire loop extending from the wall, said primary loop being integrally attached to two secondary wire loops, which are then secured to the interior of the wall. The secondary wire loops are internally stressed to retract the primary loop when not in use. A second embodiment employs an internally stressed primary loop which moves about its supporting mount to assume an operative position.

Abstract translation: 门保持装置将门或面板保持在打开位置。 它可以安装在常规的箱状公路拖车的墙上，并且可以自动地缩回到不工作的位置。 保持装置具有从壁延伸的主线环，所述主环一体地附接到两个次级线环，然后将其固定到壁的内部。 二次线环在内部受到压力，以在不使用时缩回主回路。 第二实施例采用内部受应力的主回路，其围绕其支撑座移动以呈现操作位置。