公开(公告)号：US4226486A

公开(公告)日：1980-10-07

申请号：US974332

申请日：1978-12-29

申请人： Kent S. Roberts ,  Brent J. Roberts ,  Fredrick D. Roberts

发明人： Kent S. Roberts ,  Brent J. Roberts ,  Fredrick D. Roberts

IPC分类号： D05B75/00 ,  D05B75/06 ,  A47B81/00

CPC分类号： D05B75/06

摘要： A convertible table structure, providing a planar table top adapted, among other things, to support an open-arm or portable type of sewing machine, includes an apertured platform providing the table top and having a platform section fitting the aperture and adapted to mount the sewing machine so it can be lowered to a position wherein its working surface is coplanar with the work top of the platform proper. Link means, such as parallel motion mechanism, attaches the platform section to the platform proper, and means, such as a specially shaped lever rod, is provided for moving the platform section between its coplanar position and a lowered position, as well as for locking the platform section in its coplanar position. Other means are provided for holding such platform section in a selected lowered position. Legs or other suitable structure, such as a cabinet, supports the platform at a convenient working level.

摘要翻译： 一种可转换桌面结构，提供适于支撑开放式或便携式缝纫机的平面桌面，其包括提供台面的有孔平台，并具有安装孔的平台部分，并适于安装 缝纫机，使其能够下降到其工作表面与平台的工作台面共面的位置。 连接装置，例如平行运动机构，将平台部分连接到平台本身，并且提供诸如特殊形状的杠杆杆的装置，用于在其共面位置和下降位置之间移动平台部分，以及用于锁定 平台部分处于共同的位置。 提供了用于将该平台部分保持在选定的降低位置的其它装置。 腿或其他合适的结构，如机柜，在方便的工作水平支持平台。

公开(公告)号：US4144822A

公开(公告)日：1979-03-20

申请号：US761617

申请日：1977-01-24

申请人： Kent S. Roberts ,  Brent J. Roberts

发明人： Kent S. Roberts ,  Brent J. Roberts

IPC分类号： A47B3/00

CPC分类号： A47B3/0815 ,  A47B2003/0821

摘要： A folding leg mechanism for a table is adapted to be releasably locked in a firm, stable position as the leg portion thereof is swung down to extended position from retracted position against the underside of the table top. A longitudinal slot extends through at least one side of the leg and has its longitudinal axis in substantial alignment along the leg with the pivot axis about which the leg swings. A pin extends outwardly through the slot and is adapted for movement along the longitudinal axis of the slot. Spring means are provided for biasing the pin toward that end of the leg which is attached to the table. A trackway is positioned at the side of the leg from which the pin extends, so that the pin rides on and along the trackway as the leg swings between its retracted and extended positions. Abutment means are provided with which the leg makes contact when it is moved to its extended position. An upwardly extending, pin-receiving recess is positioned in the trackway so that the pin will enter it as the leg makes contact with the abutment means. As the pin enters the recess, a wedging action takes place, locking the leg in firm contact with the abutment means.

摘要翻译： 用于桌子的折叠腿机构适于可释放地锁定在牢固且稳定的位置，因为其腿部从缩回位置向下摆动到延伸位置抵靠台面的下侧。 纵向狭槽延伸穿过腿部的至少一侧，并且其纵向轴线沿腿部基本对准，枢轴轴线绕腿部摆动。 销通过槽向外延伸并且适于沿着槽的纵向轴线移动。 提供弹簧装置用于将销朝向连接到桌子的腿的端部偏置。 轨道位于腿的从腿延伸的一侧，使得当腿在其缩回位置和伸出位置之间摆动时，该销沿着轨迹滑行。 提供了当移动到其延伸位置时腿部接触的基台装置。 向上延伸的销接收凹槽定位在轨道中，使得当腿与抵靠装置接触时，销将进入它。 当销进入凹槽时，发生楔形动作，将腿与抵靠装置牢固接触。

公开(公告)号：US4168671A

公开(公告)日：1979-09-25

申请号：US883396

申请日：1978-03-06

申请人： Kent S. Roberts ,  Brent J. Roberts

发明人： Kent S. Roberts ,  Brent J. Roberts

IPC分类号： A47B9/18 ,  D05B77/00 ,  A47B29/00

CPC分类号： D05B77/00 ,  A47B9/18

摘要： A work table of the type having a primary or base table top and a secondary table top mounted by means of parallel motion mechanism on such base table top so as to be lowered from a normal working position relative to an open-arm sewing machine resting on the base table top to an open-arm working position relative to such machine and having a short supporting leg for the secondary table top, which leg is adapted to rest upon the base table top in the normal working position, is improved by making the supporting leg retractable and arranging the parallel motion mechanism so that it does not pass dead center in the raising of the secondary table top to normal working position. In this way, considerable saving in table top material is achieved and raising and lowering thereof is facilitated. It is preferable that the supporting leg be part of a crank mechanism for easily and conveniently raising and lowering the secondary table top through the relatively short swinging stroke of the parallel motion mechanism made possible by the invention.

摘要翻译： 一种工作台，其具有通过平行运动机构安装在基座台面上的主桌面或底座台面以及辅助桌面，以便相对于搁置在其上的开放式手臂缝纫机从正常工作位置降下 基座台面相对于这种机器而处于开臂工作位置，并且具有用于副台面的短支撑腿，该腿支撑在正常工作位置的基台顶上，通过使支撑 腿部伸缩并布置平行运动机构，使得它不会在二级桌面升高到正常工作位置时通过死角。 以这种方式，实现了桌面材料的可靠节省，并且便于其升高和降低。 优选地，支腿是曲柄机构的一部分，用于通过本发明可能实现的平行运动机构的相对较短的摆动行程容易且方便地升高和降低二级台面。

公开(公告)号：US5897449A

公开(公告)日：1999-04-27

申请号：US781881

申请日：1997-01-10

申请人： Kent S. Roberts ,  Brent J. Roberts

发明人： Kent S. Roberts ,  Brent J. Roberts

IPC分类号： F42B6/06

CPC分类号： F42B6/06 ,  F42B10/26

摘要： A stabilizing vane for use with an archery arrow includes an elongate vane body with an inclined surface attached thereto. The inclined surface is confined substantially within the upper portion of the vane body spaced from the arrow shaft so as to be cooperable with an arrow rest. The inclined surface can be oriented to optimize arrow rotation and centering.

摘要翻译： 用于射箭箭头的稳定叶片包括具有附接到其上的倾斜表面的细长叶片体。 倾斜表面基本上被限制在与箭头轴间隔开的叶片体的上部中，以便与箭头支撑配合。 倾斜表面可以定向以优化箭头旋转和居中。

公开(公告)号：US5592930A

公开(公告)日：1997-01-14

申请号：US396187

申请日：1995-02-24

申请人： Kent S. Roberts ,  Brent J. Roberts

发明人： Kent S. Roberts ,  Brent J. Roberts

IPC分类号： F41B5/22

CPC分类号： F41B5/143

摘要： An archery arrow rest includes a base to be secured to the handle or riser of an archery bow and a pair of spaced arrow support fingers extending from the base to support an arrow shaft thereon and therebetween. The fingers are configured, such as by the provision of a spring configuration on each finger, to resiliently move vertically and horizontally to an extent to follow up and down and side-to-side movement of an arrow supported by the rest during shooting of the arrow.

摘要翻译： 射箭箭头支架包括固定到射箭弓的手柄或立管的基座以及从基座延伸以支撑其上和之间的箭头轴的一对间隔开的箭头支撑指。 手指配置，例如通过在每个手指上设置弹簧配置，以弹性地垂直和水平地移动到在拍摄期间由其余部分支撑的箭头的跟进和下降以及侧向运动 箭头。

公开(公告)号：US5439231A

公开(公告)日：1995-08-08

申请号：US1273

申请日：1993-01-07

申请人： Kent S. Roberts ,  Brent J. Roberts

发明人： Kent S. Roberts ,  Brent J. Roberts

IPC分类号： F41B5/18 ,  F42B6/06

CPC分类号： F42B6/06 ,  F41B5/1469

摘要： A vane and nock assembly for use with an archery arrow shaft to make an archery arrow includes an elongate body with a plurality of vanes extending from and along the body. An arrow shaft is attached to the front of the assembly so that the vanes extend therebehind. A nock may be removably mounted to the rearward end of the assembly or may be integral with the assembly. The nock may be cooperable with a release device so the release device can hold the nock and drawing force can be applied to a bow string of an archery bow through the release device and nock held thereby to thereby draw a bow. The use of the nock and cooperating release device is not limited to use with the vane and nock assembly.

摘要翻译： 与射箭箭头轴一起用于制作射箭箭头的叶片和中心组件包括具有从身体延伸并沿身体延伸的多个叶片的细长主体。 箭头轴附接到组件的前部，使得叶片在其上延伸。 橡胶垫可以可拆卸地安装到组件的后端，或者可以与组件成一体。 可以与释放装置配合，因此释放装置可以保持该间隙，并且拉伸力可以通过释放装置施加到射箭弓的弓弦，并且由此保持其由此而形成弓。 使用nock和协同释放装置不限于与叶片和组件组合使用。