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公开(公告)号：US4238097A
公开(公告)日：1980-12-09
申请号：US878732
申请日：1978-02-17
摘要： A conductor's chair, podium and stand wherein a podium has a flat standing area at a relatively low level and both the chair and stand have a plurality of generally horizontally-extending legs with certain of the legs having a greater length to underlie and balance the off-center weight of the chair and stand, respectively, and with the longer legs being positionable under the podium to bring the chair and stand relatively close together and with minimal leg exposure beyond the perimeter of the podium. The chair and stand are of separable parts with interengaging sections which may be assembled in only one relation to assure stability in use.
摘要翻译： 指挥员的椅子，讲台和座位，其中讲台具有相对较低水平的平坦的站立面积，并且椅子和支架都具有多个大致水平延伸的腿，其中一些腿具有更大的长度以使其平息 - 分别是椅子和支架的中心重量，并且较长的腿可以定位在讲台下面，以使椅子和支架相对靠近在一起，并且以最小的腿部暴露超过讲台的周边。 椅子和支架是具有相互接合部分的可分离部件，其可以仅以一种关系组装，以确保使用中的稳定性。
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公开(公告)号：US4241777A
公开(公告)日：1980-12-30
申请号：US34002
申请日：1979-04-27
CPC分类号： E04B1/8236 , A47G5/00 , E04B2/7433 , G09F15/0068 , E04B2001/8414
摘要： A portable shell of a lightweight construction usable as a room divider, display panel, or acoustical or visual enclosure detachably connectable to the framework for mounting in either a support position or a storage position. The leg structure includes a pair of legs each having a pivotally-mounted foot movable between an operative position or a storage position. Additionally, the shell has a canopy panel hinged to one end thereof for extending the height of the shell and the legs can be attached at different positions on the framework for providing different effective shell heights.
摘要翻译： 一种轻质结构的便携式外壳，可用作可拆卸地连接到框架上用于安装在支撑位置或存放位置的房间隔板，显示面板或声学或视觉外壳。 腿部结构包括一对腿部，每对腿部具有可在操作位置或存储位置之间移动的枢轴安装的脚。 此外，壳体具有铰接到其一端的盖板，用于延伸壳体的高度，并且腿部可以附接在框架上的不同位置，以提供不同的有效壳体高度。
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公开(公告)号：US4768617A
公开(公告)日：1988-09-06
申请号：US74412
申请日：1987-07-16
摘要： An adjustable stairway is disclosed that is supported on a retractable, wheel mounted carriage. A locking mechanism selectively maintains the carriage in a lowered, ground engaging position for easy maneuvering of the stairway. The weight of the stairway urges the carriage into a raised position when the locking mechanism is released, allowing the stairway to rest on stationary foot pads.
摘要翻译： 公开了一种可调节的楼梯，其被支撑在可缩回的车轮安装的托架上。 锁定机构选择性地将托架保持在降低的地面接合位置，以便于楼梯的操纵。 当锁定机构被释放时，楼梯的重量促使滑架升至升高位置，从而使楼梯能够靠在固定的脚垫上。
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