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    • 25. 发明申请
    • Trailer alignment aid with universal mounting device
    • 拖车定位辅助装置与通用安装装置
    • US20050012017A1
    • 2005-01-20
    • US10886083
    • 2004-07-07
    • Robert WardThomas McDonough
    • Robert WardThomas McDonough
    • B60R1/00B60R1/02A47F1/14A47G1/16
    • B60R1/003
    • The present invention is directed to systems and methods for trailer alignment including a clamping mechanism configured to rigidly and removably clamp to a neck of a trailer hitch ball. An arm arrangement is rotatably attached to the clamping mechanism. The arm arrangement configured to extend from the clamp arrangement to beyond an edge of a tow vehicle. A mirror may be attached to the arm arrangement and configured to provide a view of the trailer hitch ball from the inside of the tow vehicle. A sight rod may be attached to the clamping device and configured to bend in response to a trailer coupler approaching the trailer hitch ball at a predetermined distance from a selectable angle. The clamping mechanism may include a pair of opposed jaws configured to adjustably clamp between a range of about 0.8 and about 1.5 inches.
    • 本发明涉及用于拖车对准的系统和方法,包括构造成刚性地和可移除地夹紧到拖车牵引球的颈部的夹紧机构。 臂装置可旋转地附接到夹紧机构。 臂装置构造成从夹具装置延伸到牵引车辆的边缘之外。 镜子可以附接到臂布置并且构造成从拖车车辆的内部提供拖车搭接球的视图。 瞄准杆可以附接到夹紧装置并且被配置成响应于距离可选择的角度预定距离的拖车联接器接近拖车搭接球而弯曲。 夹紧机构可以包括一对相对的夹爪,其构造成在约0.8和约1.5英寸的范围内可调节地夹紧。
    • 27. 发明授权
    • Fireplace damper assembly
    • 壁炉风门组件
    • US4649808A
    • 1987-03-17
    • US816397
    • 1986-01-06
    • Robert WardJohn Newman
    • Robert WardJohn Newman
    • F23J15/02F23L11/00F23L17/00F23L17/10F23L17/02
    • F23L11/005F23J15/022F23L17/005F23L17/10F23J2213/50
    • A damper assembly for sealing a vertical fireplace exhaust including a vertical duct having an outlet communicating with the atmosphere for exhaust of fireplace fumes, mounting means mounted on said vertical duct outlet, a damper downstream of said vertical duct outlet operative to block and open said vertical duct outlet and means to open and close said damper. Easily added improvements include a spark screen assembly downstream of said damper and communicating with said vertical duct outlet, electrical actuation of said damper, automatic control of said actuation by temperature and/or smoke detection means, a fan to provide draft assist, and/or a wind protection hood to provide a better draft.
    • 一种用于密封垂直壁炉废气的阻尼器组件,其包括具有与大气连通以排出壁炉烟雾的出口的垂直管道,安装在所述垂直管道出口上的安装装置,所述垂直管道出口下游的阻尼器,用于阻塞和打开所述竖直 管道出口和打开和关闭所述阻尼器的装置。 容易增加的改进包括在所述阻尼器下游并与所述垂直管道出口连通的火花塞组件,所述阻尼器的电致动,通过温度和/或烟雾检测装置的所述致动的自动控制,用于提供助牵引的风扇和/或 防风罩提供更好的吃水。