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公开(公告)号：US06662404B1
公开(公告)日：2003-12-16
申请号：US10213054
申请日：2002-08-06
IPC分类号： B60B3300
CPC分类号： B60B33/0021 , B60B33/0002 , B60B33/0042 , B60B33/0049 , B60B33/0057 , B60B33/0068 , B60B33/0073 , B60B33/0086 , B60B33/0092 , B60B33/021 , B60B33/023 , B60B33/026 , Y10T16/1853 , Y10T16/195
摘要： A high-load, high-performance, twin-wheeled central-braking caster for a bed is provided having two wheels each comprised of an aluminum core disc and an annular cylindrical flange. The inside of the flanges are covered with elastomeric material in order to serve as brake drums for the wheels. The caster has a central braking mechanism comprising a spring-loaded double-armed brake lever mounted on a pivot pin to guide the brake lever so that it pivots exclusively about a horizontal axis perpendicular to the direction of the wheels' forward rolling movement. The central braking mechanism further comprises a pivot block with an aperture for receiving the pivot pin for mounting the brake lever. The braking mechanism further comprises two compression springs having sufficient spring force to bias the double-armed brake lever away from the wheel. Recesses are provided in the pivot block for anchoring an end of each of the compression springs, the opposite ends of the compression springs being disposed to provide a pushing force against a saddle portion of the double-armed brake lever in order to bias the brake arm away from the brake drum. Flattened teeth are provided on each arm of the brake lever to grab the elastomeric material on the inside surface of the corresponding wheel's annular flange in order to inhibit wheel rotation.
摘要翻译： 提供了一种用于床的高负载，高性能，双轮中央制动脚轮，其具有两个轮，每个轮由铝芯盘和环形圆柱形凸缘组成。 法兰的内部被弹性体材料覆盖，以便用作车轮的制动鼓。 脚轮具有中央制动机构，其包括安装在枢轴销上的弹簧加载的双臂制动杆，以引导制动杆，使得其仅围绕垂直于车轮向前滚动运动的方向的水平轴线枢转。 中央制动机构还包括具有用于接收用于安装制动杆的枢转销的孔的枢转块。 制动机构还包括具有足够弹簧力的两个压缩弹簧以将双臂制动杆偏离车轮。 在枢转块中设置有用于锚定每个压缩弹簧的端部的凹部，压缩弹簧的相对端被设置成提供抵抗双臂制动杆的鞍部的推力，以便将制动臂 远离制动鼓。 在制动杆的每个臂上设有扁平的齿，以抓住相应车轮的环形凸缘的内表面上的弹性体材料，以阻止车轮旋转。
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公开(公告)号：US5594963A
公开(公告)日：1997-01-21
申请号：US608996
申请日：1996-03-11
申请人： Steven A. Berkowitz
发明人： Steven A. Berkowitz
CPC分类号： A61G7/05769
摘要： A pressure-relieving therapeutic mattress system that uniquely combines three releasably connected main air cushions that are separately controlled for supporting corresponding portions of a patient at minimal patient interface pressures, together with a sculpted foam sub-mattress supported on a versatile, lightweight frame having a specially-adapted hard pan surface and an efficient, lightweight, variable-speed air supply system.
摘要翻译： 一种减轻压力的治疗床垫系统，其独特地组合三个可释放地连接的主气垫，其独立控制，以最小的患者界面压力支撑患者的相应部分，以及支撑在通用轻质框架上的雕刻泡沫子床垫，其具有 特别适用的硬盘表面和高效，轻便，可变速度的供气系统。
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