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1. 发明授权

US08388264B2 Method and apparatus for controlling engine speed of a self-propelled power trowel during high load conditions 有权
标题翻译：用于在高负载条件下控制自走式动力t刀的发动机转速的方法和装置
公开(公告)号：US08388264B2
公开(公告)日：2013-03-05
申请号：US12976469
申请日：2010-12-22
申请人： Scott Grahl
发明人： Scott Grahl
IPC分类号： E01C19/22
CPC分类号： E04F21/245 , E04F21/247
摘要： A self-propelled concrete finishing trowel has an electronically controlled engine droop control to prevent stalling of the trowel's engine during overload conditions. The engine droop control includes an engine speed sensor that measures operating speed of the engine and a controller that adjusts operation of a hydrostatic drive system of the trowel based on feedback received from the engine speed sensor to reduce the power draw on the engine during overload conditions. The hydrostatic drive system is powered by the engine to rotate one or more finishing blade arrangements, and under normal operating conditions, is driven by a controller to rotate the blade arrangements at an operator desired speed, such as input by a foot pedal. During overloading conditions, the controller overrides the operator input to drive the hydrostatic drive system to match an operating speed supported by the overloaded engine to reduce the power draw on the engine and thereby prevent engine stalling.
摘要翻译：自走式混凝土精整t刀具有电子控制的发动机下垂控制，以防止在过载条件下t刀发动机的失速。发动机下垂控制包括：发动机转速传感器，其测量发动机的运转速度;以及控制器，其基于从发动机速度传感器接收到的反馈来调节t刀的静液压驱动系统的运行，以减少过载条件下发动机的功率消耗。静液压驱动系统由发动机驱动以旋转一个或多个精整叶片装置，并且在正常操作条件下由控制器驱动以按照操作者期望的速度（例如脚踏板的输入）旋转叶片装置。在超载条件下，控制器覆盖操作员输入以驱动静液压驱动系统以匹配由过载发动机支持的操作速度，以减少发动机上的功率消耗，从而防止发动机停转。

2. 发明授权

US08132984B2 Multiple preset concrete trowel steering system 有权
标题翻译：多重预设混凝土t刀转向系统
公开(公告)号：US08132984B2
公开(公告)日：2012-03-13
申请号：US12416738
申请日：2009-04-01
申请人： Scott Grahl
发明人： Scott Grahl
IPC分类号： E01C19/22 , A01B69/00
CPC分类号： E04F21/247
摘要： A self-propelled concrete finishing trowel has a power steering system that facilitates operator selection of a desired steering performance response of the trowel. The power steering system includes a controller that communicates operator steering instructions from one or more joysticks and the powered actuators associated with the driven shafts. A selector allows the operator to select one or more preset steering modes, each of which has a different set of steering response characteristics for a given range of joystick motion.
摘要翻译：自走式混凝土精整t刀具有动力转向系统，便于操作者选择t刀所需的转向性能响应。动力转向系统包括控制器，该控制器与来自一个或多个操纵杆的操作者操纵指令和与从动轴相关联的动力传动器进行通信。选择器允许操作者选择一个或多个预设转向模式，每个预设转向模式对于给定范围的操纵杆运动具有不同的转向响应特性集合。

3. 发明申请

US20120163914A1 METHOD AND APPARATUS FOR CONTROLLING ENGINE SPEED OF A SELF-PROPELLED POWER TROWEL DURING HIGH LOAD CONDITIONS 有权
标题翻译：用于在高负载条件下控制自驱动电源线的发动机转速的方法和装置
公开(公告)号：US20120163914A1
公开(公告)日：2012-06-28
申请号：US12976469
申请日：2010-12-22
申请人： Scott Grahl
发明人： Scott Grahl
IPC分类号： E01C19/22 , G05B15/00 , B60K31/00
CPC分类号： E04F21/245 , E04F21/247
摘要： A self-propelled concrete finishing trowel has an electronically controlled engine droop control to prevent stalling of the trowel's engine during overload conditions. The engine droop control includes an engine speed sensor that measures operating speed of the engine and a controller that adjusts operation of a hydrostatic drive system of the trowel based on feedback received from the engine speed sensor to reduce the power draw on the engine during overload conditions. The hydrostatic drive system is powered by the engine to rotate one or more finishing blade arrangements, and under normal operating conditions, is driven by a controller to rotate the blade arrangements at an operator desired speed, such as input by a foot pedal. During overloading conditions, the controller overrides the operator input to drive the hydrostatic drive system to match an operating speed supported by the overloaded engine to reduce the power draw on the engine and thereby prevent engine stalling.
摘要翻译：自走式混凝土精整t刀具有电子控制的发动机下垂控制，以防止在过载条件下t刀发动机的失速。发动机下垂控制包括：发动机转速传感器，其测量发动机的运转速度;以及控制器，其基于从发动机速度传感器接收到的反馈来调节t刀的静液压驱动系统的运行，以减少过载条件下发动机的功率消耗。静液压驱动系统由发动机驱动以旋转一个或多个精整叶片装置，并且在正常操作条件下由控制器驱动以按照操作者期望的速度旋转叶片装置，例如由脚踏板输入。在超载条件下，控制器覆盖操作员输入以驱动静液压驱动系统以匹配由过载发动机支持的操作速度，以减少发动机上的功率消耗，从而防止发动机停转。

4. 发明申请

US20100254763A1 MULTIPLE PRESET CONCRETE TROWEL STEERING SYSTEM 有权
标题翻译：多预定混凝土导向转向系统
公开(公告)号：US20100254763A1
公开(公告)日：2010-10-07
申请号：US12416738
申请日：2009-04-01
申请人： Scott Grahl
发明人： Scott Grahl
IPC分类号： E01C19/22
CPC分类号： E04F21/247
摘要： A self-propelled concrete finishing trowel has a power steering system that facilitates operator selection of a desired steering performance response of the trowel. The power steering system includes a controller that communicates operator steering instructions from one or more joysticks and the powered actuators associated with the driven shafts. A selector allows the operator to select one or more preset steering modes, each of which has a different set of steering response characteristics for a given range of joystick motion.
摘要翻译：自走式混凝土精整t刀具有动力转向系统，便于操作者选择t刀所需的转向性能响应。动力转向系统包括控制器，该控制器与来自一个或多个操纵杆的操作者操纵指令和与从动轴相关联的动力传动器进行通信。选择器允许操作者选择一个或多个预设转向模式，每个预设转向模式对于给定范围的操纵杆运动具有不同的转向响应特性集合。

5. 发明授权

US07771139B2 Concrete trowel transport system 有权
标题翻译：混凝土抹布输送系统
公开(公告)号：US07771139B2
公开(公告)日：2010-08-10
申请号：US11839967
申请日：2007-08-16
申请人： Scott Grahl
发明人： Scott Grahl
IPC分类号： E01C19/22
CPC分类号： E04F21/247
摘要： A self-propelled concrete finishing trowel has a transport system or dolly that allows the towel to be moved manually. The transport system includes wheels that are connected to a frame of the trowel by a connector such as a rotatable shaft. A single lift device such as a jack is coupled to the connector such that operation of the lift device translates both wheels relative to the frame. The transport system allows a user to quickly deploy the wheels for non-use transportation. The wheels are also located within the footprint of the trowel so as not to interfere with a finishing operation and are positioned to maximize stability.
摘要翻译：自走式混凝土整理t刀具有可以手动移动t刀的运输系统或小车。运输系统包括通过诸如可旋转轴的连接器连接到t刀的框架的轮子。诸如千斤顶的单个提升装置联接到连接器，使得提升装置的操作相对于框架平移两个车轮。运输系统允许用户快速部署用于不使用运输的车轮。轮子也位于t刀的占地面积内，以免干扰精加工操作并且被定位成使得稳定性最大化。

6. 发明申请

US20090047070A1 Concrete Trowel Transport System 有权
标题翻译：混凝土输送系统
公开(公告)号：US20090047070A1
公开(公告)日：2009-02-19
申请号：US11839967
申请日：2007-08-16
申请人： Scott Grahl
发明人： Scott Grahl
IPC分类号： E01C19/12
CPC分类号： E04F21/247
摘要： A self-propelled concrete finishing trowel has a transport system or dolly that allows the towel to be moved manually. The transport system includes wheels that are connected to a frame of the trowel by a connector such as a rotatable shaft. A single lift device such as a jack is coupled to the connector such that operation of the lift device translates both wheels relative to the frame. The transport system allows a user to quickly deploy the wheels for non-use transportation. The wheels are also located within the footprint of the trowel so as not to interfere with a finishing operation and are positioned to maximize stability.
摘要翻译：自走式混凝土整理t刀具有可以手动移动t刀的运输系统或小车。运输系统包括通过诸如可旋转轴的连接器连接到t刀的框架的轮子。诸如千斤顶的单个提升装置联接到连接器，使得提升装置的操作相对于框架平移两个车轮。运输系统允许用户快速部署用于不使用运输的车轮。轮子也位于t刀的占地面积内，以免干扰精加工操作并且被定位成使得稳定性最大化。

7. 发明授权

US08414219B2 Concrete trowel transport system 有权
标题翻译：混凝土抹布输送系统
公开(公告)号：US08414219B2
公开(公告)日：2013-04-09
申请号：US12976353
申请日：2010-12-22
申请人： Timothy J. Lickel , Scott Grahl
发明人： Timothy J. Lickel , Scott Grahl
IPC分类号： E01C19/22
CPC分类号： E04F21/247 , E04F21/245 , E04F21/248
摘要： A self-propelled concrete finishing trowel has an integrated transport system that allows the towel to be moved from location to location. The transport system includes a pair of spaced wheel assemblies, each including a pair of wheels that are connected to a frame of the trowel. The wheels of each respective wheel assembly are connected to one another via a powered actuator such as a double acting hydraulic cylinder. The powered actuator is actuatable to raise and lower the first and second wheels from a stowed position in which the wheels are located above the ground and the blades are supported on the ground to a deployed position in which the wheel are supported on the ground and the blades are raised from the ground.
摘要翻译：自走式混凝土整理抹布具有集成的运输系统，可以将毛巾从一个位置移动到另一个位置。运输系统包括一对间隔开的车轮组件，每个间隔的车轮组件包括连接到t刀的框架的一对车轮。每个相应的车轮组件的车轮通过诸如双作用液压缸的动力致动器相互连接。动力致动器可致动以使第一和第二轮从其位于地面上方的收起位置升高和降低，并且叶片被支撑在地面上到展开位置，其中车轮被支撑在地面上，并且刀片从地面上升起。

8. 发明申请

US20120163912A1 CONCRETE TROWEL TRANSPORT SYSTEM 有权
标题翻译：混凝土输送系统
公开(公告)号：US20120163912A1
公开(公告)日：2012-06-28
申请号：US12976353
申请日：2010-12-22
申请人： Timothy J. Lickel , Scott Grahl
发明人： Timothy J. Lickel , Scott Grahl
IPC分类号： B60S9/02 , E01C19/22
CPC分类号： E04F21/247 , E04F21/245 , E04F21/248
摘要： A self-propelled concrete finishing trowel has an integrated transport system that allows the towel to be moved from location to location. The transport system includes a pair of spaced wheel assemblies, each including a pair of wheels that are connected to a frame of the trowel. The wheels of each respective wheel assembly are connected to one another via a powered actuator such as a double acting hydraulic cylinder. The powered actuator is actuatable to raise and lower the first and second wheels from a stowed position in which the wheels are located above the ground and the blades are supported on the ground to a deployed position in which the wheel are supported on the ground and the blades are raised from the ground.
摘要翻译：自走式混凝土整理抹布具有集成的运输系统，可以将毛巾从一个位置移动到另一个位置。运输系统包括一对间隔开的车轮组件，每个间隔的车轮组件包括连接到t刀的框架的一对车轮。每个相应的车轮组件的车轮通过诸如双作用液压缸的动力致动器相互连接。动力致动器可致动以使第一和第二轮从其位于地面上方的收起位置升高和降低，并且叶片被支撑在地面上到展开位置，其中车轮被支撑在地面上，并且刀片从地面上升起。

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