公开(公告)号：US5343831A

公开(公告)日：1994-09-06

申请号：US115910

申请日：1993-09-01

Applicant: Imack L. Collins

Inventor： Imack L. Collins

IPC: F01P5/06 ,  F01P11/12 ,  F02M35/06 ,  F04D25/16 ,  F04D29/70 ,  F01P7/04

CPC classification number: F02M35/06 ,  F01P11/12 ,  F01P5/06 ,  F04D25/166 ,  F04D29/703 ,  Y10S55/14 ,  Y10S55/28

Abstract: A portable work producing apparatus, such as a chain saw, has an engine cooled by air from a blower driven by the engine. The engine's carburetor is pressurized with clean air from the blower. The blower includes a centrifugal impeller mounted within a fan housing having a set of blades for creating a vacuum to draw air into the housing. The impeller has a second set of relatively low-profile blades underneath the impeller for creating a vacuum under the impeller that draws air in through holes defined through the hub of the impeller. The air drawn through the holes is supplied to the carburetor. A circular screen extends from the axis of the impeller over the holes. Small particles entrained in the air stream entering the housing tend to be carried by the predominant portion of the stream into the housing. The screen is positioned and of a size that the trajectories of more massive particles entering the housing that are not blown into the housing bounce off the screen. Thus, the air delivered to the carburetor is relatively free from particles that would otherwise clog the air filter of the carburetor.

Abstract translation: 诸如链锯的便携式工作生产设备具有由来自由发动机驱动的鼓风机的空气冷却的发动机。 发动机的化油器用吹风机的清洁空气加压。 鼓风机包括安装在具有一组叶片的风扇壳体内的离心式叶轮，用于产生真空以将空气吸入壳体。 叶轮具有在叶轮下方的第二组相对较低轮廓的叶片，用于在叶轮下方产生真空，该空气在通过叶轮的轮毂限定的通孔中吸入空气。 通过孔抽出的空气被提供给化油器。 圆形屏幕从叶轮的轴线延伸穿过孔。 携带在进入壳体的空气流中的小颗粒倾向于由流的主要部分携带到壳体中。 屏幕的定位和尺寸使进入壳体的更大质量的颗粒的轨迹未被吹入壳体中从屏幕反弹。 因此，输送到化油器的空气相对没有会阻塞化油器的空气过滤器的颗粒。

公开(公告)号：US5269665A

公开(公告)日：1993-12-14

申请号：US719027

申请日：1991-06-21

Applicant: Jeffrey G. Sadler ,  Lloyd H. Tuggle ,  Imack L. Collins

Inventor： Jeffrey G. Sadler ,  Lloyd H. Tuggle ,  Imack L. Collins

IPC: A47L5/14 ,  F02B63/02 ,  F02B75/02 ,  F04D25/02 ,  F04B35/00

CPC classification number: F01N1/00 ,  A47L5/14 ,  F02B63/02 ,  F04D25/02 ,  F01N2340/04 ,  F01N2590/06 ,  F02B2075/025

Abstract: A portable, hand-held blower/vacuum unit has a housing structure defined by an upper engine shroud removably connected to the top wall of a lower impeller housing. Disposed within the shroud is a small internal combustion engine having a vertical crankshaft which extends downwardly through a depending well section formed on the top wall of the impeller housing, the lower shaft end being drivingly connected to a centrifugal fan impeller positioned within the impeller housing and operative to force a flow of ambient air therethrough. The engine is resiliently and floatingly mounted within the shroud by a resilient support system which prevents rigid contact between the engine and the shroud or the impeller housing to thereby substantially reduce engine vibration transmitted to the housing structure, and permit deflection of the engine relative to the housing structure to lessen the possibility of engine damage caused by impeller impact from ingested objects. The engine's carburetor is disposed within a shroud wall section that defines with a fan housing portion of the engine a double-walled thermal barrier disposed between the carburetor and the engine's muffler. A resilient air filter element is interconnected between the shroud and the carburetor air inlet and flexes in response to engine deflection to thereby absorb and damp engine vibration which might otherwise be transmitted to the housing structure through the carburetor.

Abstract translation: 便携式手持式鼓风机/真空单元具有由可拆卸地连接到下部叶轮壳体的顶壁的上部发动机罩限定的壳体结构。 设置在护罩内的是具有垂直曲轴的小型内燃机，该立式曲轴向下延伸通过形成在叶轮壳体的顶壁上的垂直井部分，下轴端驱动地连接到位于叶轮壳体内的离心风扇叶轮， 可操作地迫使环境空气流过其中。 发动机通过弹性支撑系统弹性和浮动地安装在护罩内，该弹性支撑系统防止发动机和护罩或叶轮壳体之间的刚性接触，从而基本上减少传递到壳体结构的发动机振动，并且允许发动机相对于 住房结构，以减少叶轮对被摄物体的影响引起的发动机损坏的可能性。 发动机的化油器设置在护罩壁部分内，其中发动机的风扇壳体部分限定了设置在化油器和发动机消声器之间的双壁热障。 弹性空气过滤器元件在护罩和化油器空气入口之间相互连接，并且响应于发动机偏转而弯曲，从而吸收和减弱可能通过化油器传递到壳体结构的发动机振动。

公开(公告)号：US4835867A

公开(公告)日：1989-06-06

申请号：US908214

申请日：1986-09-17

Applicant: Imack L. Collins ,  Jerry E. Stuart ,  Gary H. Foster

Inventor： Imack L. Collins ,  Jerry E. Stuart ,  Gary H. Foster

IPC: A01D34/416

CPC classification number: A01D34/4162

Abstract: Apparatus for cutting vegetation with a rotatable head carrying a non-metallic cutting line extended into a cutting plane. As the line extension decreases from an established preset length an actuator in the head permits additional line to be extended automatically from a supply source within the head. The actuator imposes a back pressure against the line of magnitude correlated to the sensed pull tension wanting to extend the line outward of the head. After the cutting line length is extended to its restored original preset length, the actuator in response to the operational forces imposed thereon secures the cutting line against further extension until a subsequent decrease in line extension is incurred. In one embodiment an inertial drag brake is activated during the course of line feedout and is deactivated after the length of cutting line has been fully restored.

Abstract translation: 用于用可旋转的头部切割植被的装置，其承载延伸到切割平面中的非金属切割线。 当线路延伸从已建立的预设长度减小时，头部中的致动器允许从头部内的供应源自动地延伸附加线。 致动器施加相对于感测到的拉伸张力相关的幅度的背压，该张力希望将线延伸到头部的外部。 在切割线长度延伸到其恢复的原始预设长度之后，响应于施加的操作力的致动器固定切割线以防止进一步延伸，直到发生线延伸的随后减小。 在一个实施例中，惯性拖拉制动器在行进给过程中被激活，并且在切割线的长度已经完全恢复之后被停用。

公开(公告)号：US6079697A

公开(公告)日：2000-06-27

申请号：US244522

申请日：1999-02-04

Applicant: Lloyd H. Tuggle ,  Imack L. Collins ,  Jeffrey G. Sadler ,  Michael J. Ferlito

Inventor： Lloyd H. Tuggle ,  Imack L. Collins ,  Jeffrey G. Sadler ,  Michael J. Ferlito

IPC: F02M1/02 ,  F02M1/16 ,  F02M17/04

CPC classification number: F02M17/04 ,  F02M1/02 ,  F02M1/16 ,  Y10S261/08 ,  Y10S261/68

Abstract: A fuel delivery system for an internal combustion engine. The fuel delivery system includes a carburetor housing having an air passage with a throttle valve disposed therein. A choke lever is movably mounted to the carburetor housing for restricting air flow into the air passage. A fuel injection device is provided for injecting fuel into the air passage before the engine is started. Movement of the choke lever to an engaged position simultaneously opens the throttle valve, restricts air flow into the air passage and activates the fuel injection device to inject a predetermined volume of fuel into the air passage. The air-flow restriction and the predetermined volume of fuel are adjusted to compensate for changes in ambient temperature.

Abstract translation: 一种用于内燃机的燃料输送系统。 燃料输送系统包括具有设置在其中的具有节流阀的空气通道的化油器壳体。 扼流杆可移动地安装在化油器壳体上，用于限制空气流入空气通道。 一种燃料喷射装置，用于在发动机启动之前将燃料喷射到空气通道中。 扼流杆移动到接合位置同时打开节流阀，限制空气流入空气通道并启动燃料喷射装置，以将预定体积的燃料喷射到空气通道中。 调节气流限制和预定体积的燃料以补偿环境温度的变化。

公开(公告)号：US5758611A

公开(公告)日：1998-06-02

申请号：US839589

申请日：1997-04-15

Applicant: Imack L. Collins

Inventor： Imack L. Collins

IPC: F02B75/18 ,  F02B25/12 ,  F02B63/02 ,  F02B75/02 ,  F02B75/22 ,  F02B75/32 ,  F02F7/00 ,  F02B75/26

CPC classification number: F02B63/02 ,  F02B25/12 ,  F02B75/228 ,  F02B75/32 ,  F02F7/0019 ,  F02B2075/025 ,  F05C2201/02 ,  F05C2201/028 ,  Y10T74/2162

Abstract: A two-stroke, U-type uniflow engine includes a cylinder block forming parallel first and second cylinders and a common combustion chamber connecting the first and second cylinders. First and second pistons are mounted for reciprocal, linear movement within the first and second cylinders respectively. The engine also includes a crank shaft having a crank pin and a one-piece forked connecting rod connecting each of the first and second pistons to the crank pin. The connecting rod is elastically, bilaterally flexible to accommodate variations between a maximum distance between the first and second pistons and a minimum distance between the first and second pistons and is in a relaxed state half-way between the maximum distance and the minimum distance. The central wall has a slot for passage of the connecting rod therethrough and angled notches which correspond to maximum angles of the connecting rod. The connecting rod is designed to minimize weight and length and the engine bore and stroke are selected to minimize the difference between the maximum and minimum distance of the wrist pin displacement in order to reduce vibrations and to increase engine output by maintaining high crankcase compression.

Abstract translation: 二冲程U型单流发动机包括形成平行的第一和第二气缸的气缸体和连接第一和第二气缸的公共燃烧室。 第一和第二活塞分别安装在第一和第二气缸内的往复，线性运动。 发动机还包括具有曲柄销的曲柄轴和将第一和第二活塞中的每一个连接到曲柄销的单件叉形连杆。 连杆是弹性的，双边弹性的以适应第一和第二活塞之间的最大距离与第一和第二活塞之间的最小距离之间的变化，并且在最大距离和最小距离之间处于松弛状态。 中心壁具有用于连接杆通过的槽和对应于连杆的最大角度的成角度的凹口。 连杆被设计成使重量和长度最小化，并且选择发动机孔和行程以最小化腕针位移的最大和最小距离之间的差异，以便通过维持高曲轴箱压缩来减少振动和增加发动机输出。

公开(公告)号：US5276968A

公开(公告)日：1994-01-11

申请号：US609030

申请日：1990-10-31

Applicant: Imack L. Collins ,  Jerry E. Stuart ,  Gary H. Foster

Inventor： Imack L. Collins ,  Jerry E. Stuart ,  Gary H. Foster

IPC: A01D34/416 ,  A01D50/00

CPC classification number: A01D34/4162

Abstract: Apparatus for cutting vegetation with a rotatable head carrying a non-metallic cutting line extended into a cutting plane. As the line extension decreases from an established preset length an actuator in the head permits additional line to be extended automatically from a supply source within the head. The actuator imposes a back pressure against the line of magnitude correlated to the sensed pull tension wanting to extend the line outward of the head. After the cutting line length is extended to its restored original preset length, the actuator in response to the operational forces imposed thereon secures the cutting line against further extension until a subsequent decrease in line extension is incurred. In one embodiment an inertial drag brake is activated during the course of line feedout and is deactivated after the length of cutting line has been fully restored.

Abstract translation: 用于用可旋转的头部切割植被的装置，其承载延伸到切割平面中的非金属切割线。 当线路延伸从已建立的预设长度减小时，头部中的致动器允许从头部内的供应源自动地延伸附加线。 致动器施加相对于感测到的拉伸张力相关的幅度的背压，该张力希望将线延伸到头部的外部。 在切割线长度延伸到其恢复的原始预设长度之后，响应于施加的操作力的致动器固定切割线以防止进一步延伸，直到发生线延伸的随后减小。 在一个实施例中，惯性拖拉制动器在行进给过程中被激活，并且在切割线的长度已经完全恢复之后被停用。

公开(公告)号：US5211144A

公开(公告)日：1993-05-18

申请号：US783204

申请日：1991-10-28

Applicant: Imack L. Collins ,  David M. Wiseman

Inventor： Imack L. Collins ,  David M. Wiseman

IPC: A47L5/14 ,  E01H1/08 ,  F02B1/04 ,  F02B63/02 ,  F02B75/02 ,  F02M1/02 ,  F02M35/10 ,  F02M35/12 ,  F02N3/02

CPC classification number: F02M35/1019 ,  A47L5/14 ,  E01H1/0809 ,  F02B63/02 ,  F02M1/02 ,  F02M35/1017 ,  F02M35/1233 ,  F02N3/02 ,  F02B1/04 ,  F02B2075/025

Abstract: A portable, hand-held blower unit is powered by a small internal combustion engine having movable choke and throttle control elements linked to a single adjustment knob. Rotation of the knob between full throttle and full choke positions thereof simultaneously adjusts the engine's throttle and choke settings and maintains predetermined engine start and run positional relationships therebetween. The engine carburetor has mounted thereon a specially designed air intake box which substantially reduces engine air intake noise. In the normal operating position of the unit the engine drive shaft is generally vertically oriented, with the carburetor being secured to the top of the engine and the underside of the air intake box. The lower end of the drive shaft is coaxially secured to the unit's blower fan impeller which is spaced upwardly apart from a pull rope starter pulley rotatably carried by the fan impeller housing. When the starter rope is pulled, a toothed pinion member carried by the starter pulley is moved upwardly into rotationally driving engagement with a central toothed portion of the fan impeller to effect engine starting. Upon starter rope release, the pinion member is automatically moved downwardly out of driving engagement with the fan impeller.

Abstract translation: 便携式手持式鼓风机单元由具有连接到单个调节旋钮的可动扼流器和节流控制元件的小型内燃机供电。 旋钮在全油门和全扼流位置之间的旋转同时调节发动机的节气门和扼流圈设置，并保持预定的发动机起动和运行之间的位置关系。 发动机化油器上安装了专门设计的进气箱，可大大降低发动机进气噪音。 在单元的正常操作位置，发动机驱动轴通常垂直定向，其中化油器固定在发动机的顶部和进气箱的下侧。 驱动轴的下端同轴地固定在单元的风扇叶轮上，该风扇叶轮与由风扇叶轮壳体可转动地承载的拉绳启动轮分开。 当起动绳被拉动时，由起动轮承载的齿轮小齿轮向上移动，与风扇叶轮的中心齿部旋转地驱动接合，以实现发动机起动。 在起动器绳索释放时，小齿轮构件自动地向下移动离开与风扇叶轮的驱动接合。

公开(公告)号：US06494439B1

公开(公告)日：2002-12-17

申请号：US09417562

申请日：1999-10-14

Applicant: Imack L. Collins

Inventor： Imack L. Collins

IPC: F02M102

CPC classification number: F02M1/02

Abstract: A carburetor control system for a carburetor including a first cam and a second cam. The carburetor includes a choke valve assembly and a throttle valve assembly. The first cam is connected to the choke valve assembly. The second cam is connected to the throttle valve assembly. The second cam includes a first section and a second section. When the first cam is moved to a choke position the first section can be contacted by the first cam to latch the second cam in a start position. When the throttle valve assembly is moved to a wide open throttle position the second section can contact the first cam to hold the first cam in the choke position.

Abstract translation: 一种用于化油器的化油器控制系统，包括第一凸轮和第二凸轮。 化油器包括节流阀组件和节流阀组件。 第一凸轮连接到节流阀组件。 第二凸轮连接到节流阀组件。 第二凸轮包括第一部分和第二部分。 当第一凸轮移动到阻塞位置时，第一部分可以被第一凸轮接触以将第二凸轮锁定在起始位置。 当节流阀组件移动到宽开的节流位置时，第二部分可以接触第一凸轮以将第一凸轮保持在阻塞位置。

公开(公告)号：US5891369A

公开(公告)日：1999-04-06

申请号：US914551

申请日：1997-08-19

Applicant: Lloyd H. Tuggle ,  Imack L. Collins ,  Jeffrey G. Sadler ,  Michael J. Ferlito

Inventor： Lloyd H. Tuggle ,  Imack L. Collins ,  Jeffrey G. Sadler ,  Michael J. Ferlito

IPC: F02M1/02 ,  F02M1/16 ,  F02M17/04

CPC classification number: F02M17/04 ,  F02M1/02 ,  F02M1/16 ,  Y10S261/08 ,  Y10S261/68

Abstract: A fuel delivery system for an internal combustion engine. The fuel delivery system includes a carburetor housing having an air passage with a throttle valve disposed therein. The air passage has an inlet and an outlet. The outlet is in communication with the engine. Means are provided for simultaneously opening the throttle valve, restricting air flow into the air passage and injecting a predetermined volume of fuel into the air passage before the engine is started. Other means are provided for automatically adjusting the restriction of air flow and the predetermined volume of fuel to compensate for changes in ambient temperature.

Abstract translation: 一种用于内燃机的燃料输送系统。 燃料输送系统包括具有设置在其中的具有节流阀的空气通道的化油器壳体。 空气通道具有入口和出口。 出风口与发动机连通。 提供了用于同时打开节流阀的装置，在发动机启动之前限制空气流入空气通道并将预定体积的燃料喷射到空气通道中。 提供了其他装置，用于自动调整气流的限制和预定体积的燃料以补偿环境温度的变化。

公开(公告)号：US5383427A

公开(公告)日：1995-01-24

申请号：US94604

申请日：1993-07-19

Applicant: Lloyd H. Tuggle ,  Imack L. Collins ,  Jeffrey G. Sadler

Inventor： Lloyd H. Tuggle ,  Imack L. Collins ,  Jeffrey G. Sadler

IPC: F02B1/04 ,  F02B3/06 ,  F02B25/12 ,  F02B63/02 ,  F02B75/02 ,  F02B75/06 ,  F02F1/10

CPC classification number: F01B3/0002 ,  F02B25/12 ,  F02B63/02 ,  F02B75/065 ,  F02B75/26 ,  F02F1/108 ,  F02B1/04 ,  F02B2075/025 ,  F02B3/06

Abstract: A flexible line trimmer is powered by a two-stroke internal combustion engine. The engine is scavenged in a uniflow fashion and has a scavenging cylinder and an exhaust cylinder connected by a common combustion chamber. Each cylinder has a piston turning one of two cantilevered crankshafts that are geared through adjacent counterweights having integrally formed teeth. The crankshafts extend in opposite directions for self-balancing. One crankshaft is coupled to a flywheel fan and other coupled to a starter. A fuel and air mixture is transferred to a common crankcase for the crankshafts through an intake port located on the exhaust cylinder. The piston of the scavenge cylinder is retarded with respect to the exhaust cylinder. An exhaust window opens prior to a scavenge window. The scavenge window closes after the exhaust window. The exhaust window is shortened to improve crankcase compression. The cylinders are joined in a siamese fashion, fabricated from a single piece, and skewed toward each other. A carburetor and muffler are mounted on substantially opposite sides of the exhaust cylinder.

Abstract translation: 柔性线切割机由二冲程内燃机提供动力。 发动机以单向清扫，并具有通过共用燃烧室连接的扫气缸和排气缸。 每个气缸具有转动两个悬臂曲轴之一的活塞，其通过具有整体形成的齿的相邻配重齿轮进行齿轮传动。 曲轴在相反的方向上延伸以进行自平衡。 一个曲轴联接到飞轮风扇，另一个连接到起动器。 燃料和空气混合物通过位于排气缸上的进气口传递到用于曲轴的共同曲轴箱。 扫气筒的活塞相对于排气筒延迟。 排气窗在清扫窗之前打开。 排气窗后的扫气窗关闭。 排气窗口缩短以改善曲轴箱的压缩。 气缸以暹罗的方式连接，由单件制成，并朝向彼此倾斜。 化油器和消音器安装在排气缸的基本相对的两侧。