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1. 发明授权

US4548250A Apparatus for operating a line driven device 失效
标题翻译：用于操作线驱动装置的装置
公开(公告)号：US4548250A
公开(公告)日：1985-10-22
申请号：US530957
申请日：1983-09-12
申请人： Richard D. Meharg , Buckley A. Singletary
发明人： Richard D. Meharg , Buckley A. Singletary
IPC分类号： A47H5/032 , A47H1/00
CPC分类号： A47H5/0325
摘要： An apparatus for operating a line driven device such as a traverse rod. The apparatus includes a frame member adapted to be mounted on or near the device, a reaction arm mounted on the frame member for pivotal movement, a motor mounted on the reaction arm and having an output shaft with a drive member, the reaction arm being adapted for pivotal movement about the output shaft, and a tensioning member disposed in spaced relation to the drive member. With this arrangement, the tensioning member can engage a line to maintain the line in tension in response to pivotal movement of the reaction arm.
摘要翻译：一种用于操作诸如横动杆的线驱动装置的装置。该装置包括适于安装在装置上或附近的框架构件，安装在框架构件上以用于枢转运动的反作用臂，安装在反作用臂上的具有驱动构件的输出轴的马达，反作用臂适于用于围绕输出轴的枢转运动，以及与驱动构件隔开设置的张紧构件。通过这种布置，张紧构件可以接合线以响应于反作用臂的枢转运动而使线保持张力。

2. 发明授权

US4326732A Foldable wheelchair 失效
标题翻译：折叠式轮椅
公开(公告)号：US4326732A
公开(公告)日：1982-04-27
申请号：US185116
申请日：1980-09-08
申请人： John C. Gall , Richard D. Meharg
发明人： John C. Gall , Richard D. Meharg
IPC分类号： A61G5/08 , B62B11/00
CPC分类号： A61G5/08 , A61G5/0816 , Y10S297/04
摘要： A foldable wheelchair having shiftable driving wheels so arranged, that as the side frame members are folded to reduce the width of the chair, the wheels are controllably and automatically shifted to reduce the depth of the chair thereby effecting a reduction in the side area required to accommodate the chair.
摘要翻译：一种可折叠的轮椅，其具有如此布置的可移动的驱动轮，当侧框架构件被折叠以减小椅子的宽度时，轮子被可控地和自动地移动以减小椅子的深度，从而减少了所需的侧面面积容纳椅子。

3. 发明授权

US4579397A Sewing machine head lift device 失效
标题翻译：缝纫机头部提升装置
公开(公告)号：US4579397A
公开(公告)日：1986-04-01
申请号：US657505
申请日：1984-10-04
申请人： John C. Gall , Richard D. Meharg
发明人： John C. Gall , Richard D. Meharg
IPC分类号： D05B75/06 , A47B81/00
CPC分类号： D05B75/06
摘要： A lift device for a sewing machine head of the type having a free arm to alternately provide flat bed, free arm and storage positions in a cabinet having a tabletop with a cutout for the sewing machine head and a pivoting lift mechanism disposed beneath the cutout. The lift device includes a base plate for the sewing machine head secured to the pivoting lift mechanism to permit movement of the sewing machine head between the flat bed, free arm and storage positions. The lift mechanism includes a pair of primary links having first ends pivotally secured to the underside of the tabletop adjacent and on opposite sides of the cutout and a pair of secondary links having first ends pivotally secured at opposite sides of the base plate remote from the points at which the primary links are secured to the tabletop with the second ends of the primary links being pivotally secured to the second ends of the secondary links. The lift device also includes structure in the form of members which engage and disengage in response to movement of the lift mechanism for supporting the sewing machine head in each of the flat bed, free arm and storage positions. By limiting relative pivotal movement between the primary links and the secondary links and between the secondary links and the base plate, the lift device is capable of shifting the center of gravity of the sewing machine head toward the pivot point during movement between the flat bed, free arm and storage positions.
摘要翻译：一种用于缝纫机头部的提升装置，其具有自由臂以交替地提供平板，自由臂和存储位置在具有台面的机柜中，该台面具有用于缝纫机头部的切口和设置在切口下方的枢转升降机构。提升装置包括用于缝纫机头部的基板，该基板固定到枢转提升机构，以允许缝纫机头在平板，自由臂和存储位置之间移动。提升机构包括一对主连杆，其一端在切口的相邻两侧枢转地固定在台面的下侧，一对副连杆具有可枢转地固定在基板远离点的相对侧的第一端其中主链节固定到桌面上，主链节的第二端枢转地固定到次连杆的第二端。提升装置还包括构件形式的结构，其响应于提升机构的运动而接合和脱离，用于在每个平底床，自由臂和存储位置中支撑缝纫机头。通过限制主链节和次连杆之间以及次连杆和基板之间的相对枢转运动，提升装置能够在平床之间移动期间使缝纫机头的重心向着枢转点移动，自由手臂和仓储位置。

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