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    Adjustable book stand
    71.
    发明授权
    Adjustable book stand 失效
    可调书架

    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。

    Bilevel student activity table
    72.
    发明授权
    Bilevel student activity table 失效
    双学生活动表

    公开(公告)号：US4825780A

    公开(公告)日：1989-05-02

    申请号：US108229

    申请日：1987-10-14

    Applicant: Ronald M. Maxwell ,  Arthur W. Carlson

    Inventor： Ronald M. Maxwell ,  Arthur W. Carlson

    IPC: A47B9/08 ,  A47B19/06 ,  A47B83/02 ,  A47F5/12

    CPC classification number: A47B83/02 ,  A47B19/06 ,  A47B9/08 ,  A47B9/18 ,  A47B2200/0039 ,  A47B2200/11

    Abstract: A multi-level table for student activity use, such as in science or art labs, includes a top which may be adjusted relative to a base in either a raised or a lowered position. In either position, the table top is rigidly secured to the base for stability and the adjustment between positions is accomplished without removing the top from the base. Folding seats may be folded into a very tin profile for storage beneath the table top when not in use. A novel upright support is also disclosed which may be removably mounted onto the table top for use in supporting equipment used in laboratory work.

    Abstract translation: 用于学生活动使用的多级表，例如在科学或艺术实验室中，包括可以相对于在升高或降低位置的基座进行调整的顶部。 在任一位置，台面刚性地固定到基座上用于稳定性，并且在不从基座移除顶部的情况下实现位置之间的调节。 当不使用折叠座椅时，折叠座椅可能被折叠成一个非常锡型材，用于存放在桌面下方。 还公开了一种新颖的直立支撑件，其可拆卸地安装在桌面上用于实验室工作中使用的支撑设备。

    Adjustable foot support
    73.
    发明授权
    Adjustable foot support 失效
    可调脚支撑

    公开(公告)号：US4549767A

    公开(公告)日：1985-10-29

    申请号：US557455

    申请日：1983-12-02

    Applicant: James F. Hampshire ,  Beverly L. Wilkinson

    Inventor： James F. Hampshire ,  Beverly L. Wilkinson

    IPC: A47B19/06 ,  A47C16/02

    CPC classification number: A47C16/025 ,  A47B19/06

    Abstract: An adjustable foot support (10) includes a platform (38) upon which the feet may be placed and a base (14) to support the platform (38). A bracket assembly (26) extends upwardly from the base (14) and has a plurality of stepped channels (28) which selectively cooperate with a downwardly extending leg (41) from the platform (38) so that the platform (38) is selectively inclined with respect to the base (14).

    Abstract translation: 可调节的脚部支撑件（10）包括平台（38），脚可以放置在该平台（38）上，以及支撑平台（38）的底座（14）。 支架组件（26）从底座（14）向上延伸并且具有多个阶梯式通道（28），其选择性地与来自平台（38）的向下延伸的支脚（41）配合，使得平台（38）选择性地 相对于底座（14）倾斜。

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