公开(公告)号：US5273247A

公开(公告)日：1993-12-28

申请号：US970789

申请日：1992-11-03

Applicant: Rong S. Jan

Inventor： Rong S. Jan

IPC: A47B19/06 ,  A47B19/00

CPC classification number: A47B19/06

Abstract: A book stand includes a base, a post extended upward from the base, a sleeve slidably engaged on the post and movable up and down along the post, a housing rotatably disposed on the sleeve at a vertical axis, and a board rotatably disposed on the housing at a lateral axis. The height of the board can be adjusted when the sleeve slides along the post, and the angular positions of the board can be adjusted when the housing rotates about the vertical axis and when the board rotates about the lateral axis.

Abstract translation: 书架包括底座，从底座向上延伸的柱子，可滑动地接合在柱上并可沿着柱子上下移动的套筒，可垂直于轴线可旋转地设置在套筒上的壳体， 外侧轴向。 当套筒沿着柱子滑动时，可以调节板的高度，并且当壳体围绕垂直轴线旋转并且当板绕横向轴线旋转时，可以调节板的角位置。

公开(公告)号：US5099578A

公开(公告)日：1992-03-31

申请号：US696785

申请日：1991-05-07

Applicant: Rong S. Jan

Inventor： Rong S. Jan

IPC: B26B5/00

CPC classification number: B26B5/001

Abstract: An improved retractable knife comprises two coalescent casings which has a sliding seat and a driving button inside. Two casings are combined firmly so that the sliding seat can move inside the casings firmly.

Abstract translation: 改进的可伸缩刀包括两个聚结壳体，其内部具有滑动座和驱动按钮。 两个壳体牢固结合，使得滑动座椅可以牢固地在壳体内移动。