公开(公告)号：US3824978A

公开(公告)日：1974-07-23

申请号：US35408773

申请日：1973-04-24

Applicant: MC CULLOCH CORP

Inventor： PAQUETTE M ,  PAQUETTE R

IPC: F02N5/02

CPC classification number: F02N5/02

Abstract: A method and apparatus for starting an internal combustion engine. The apparatus includes a convolute spring disposed about an arbor which in turn is coaxially mounted upon a crankshaft of the engine. The spring serves to drive the crankshaft through a one-way clutch operably connected between the arbor and the crankshaft. The spring is fastened at the other end to a spring casing which is mounted for unidirectional rotation about the crankshaft. A spring rewind drive train drivingly connects the crankshaft with the spring casing and is operable to rotate the spring casing to rewind the starter spring upon starting of the internal combustion engine. A hydraulic system is provided for automatically resetting a starter spring release to rewind the starter spring upon starting of the engine. A hydraulic lock-out means automatically terminates the rewinding operation upon winding the spring to a predetermined extend. The lock-out precludes overwinding and excessive wear during operation of the engine. The method includes the steps of releasing a spring biased arbor connected through a one-way clutch to the engine crankshaft, transmitting torque energy from a wound spring to the engine crankshaft for rotating the crankshaft and starting the internal combustion engine. Further, the method includes hydraulically resetting the arbor arm to stop rotation thereof automatically upon starting of the internal combustion engine, rewinding the starter spring for subsequent use, and hydraulically terminating the rewinding process upon the starter spring achieving a rewound condition.

Abstract translation: 一种启动内燃机的方法和装置。 该装置包括围绕心轴设置的旋转弹簧，该心轴又被同轴地安装在发动机的曲轴上。 弹簧用于通过可操作地连接在心轴和曲轴之间的单向离合器来驱动曲轴。 弹簧在另一端被固定到弹簧壳体上，该弹簧壳体被安装成围绕曲轴单向旋转。 弹簧复卷驱动系统将曲轴与弹簧壳体驱动连接，并且可操作以使弹簧壳体旋转以在起动内燃机时重新起动起动弹簧。 提供了一种液压系统，用于在发动机起动时自动复位起动弹簧释放件以重新起动起动弹簧。 液压锁定装置在将弹簧卷绕到预定的延伸段时自动地终止重绕操作。 锁定在发动机运行期间排除了过度缠绕和过度磨损。

公开(公告)号：US3129731A

公开(公告)日：1964-04-21

申请号：US6318660

申请日：1960-10-17

Applicant: MC CULLOCH CORP

Inventor： TYRRELL VINCENT C

IPC: B23Q13/00

CPC classification number: B23Q13/00

公开(公告)号：US3838323A

公开(公告)日：1974-09-24

申请号：US32940073

申请日：1973-02-05

Applicant: MC CULLOCH CORP

Inventor： ANDERSON H

IPC: G01L3/22 ,  H02K49/04 ,  H02K49/00 ,  H02P15/00

CPC classification number: H02K49/04 ,  G01L3/22 ,  Y10S388/932

Abstract: An eddy current dynamometer speed control circuit includes transistors connected in series with the motor field coil and the absorbing field coil to control the current in the coils in a continuously variable manner to effect changes between a braking mode and a motoring mode responsively to dynamometer speed changes. The speed control circuit utilizes a regulated voltage onto which is impressed a tachometer signal having an amplitude related to the speed of the dynamometer input/output shaft. Control voltages for the transistors are applied through Zener diodes each of which function as a threshold circuit to control the initial acceleration of the input/output shaft of the dynamometer and for causing a full motoring field to be applied responsively to abnormally large speed drops for quick recovery. A current sharing transistor circuit is also disclosed.

Abstract translation: 涡流测力计速度控制电路包括与电机励磁线圈和吸收场线圈串联连接的晶体管，以连续可变的方式控制线圈中的电流，以响应于测功机速度变化来实现制动模式和电动模式之间的变化 。 速度控制电路使用调节电压，其上施加了具有与测力计输入/输出轴的速度相关的振幅的转速计信号。 晶体管的控制电压通过齐纳二极管施加，每个二极管用作阈值电路，以控制测功机的输入/输出轴的初始加速度，并使整个电机场响应于异常大的速度下降而快速施加 复苏。 还公开了一种电流共享晶体管电路。

公开(公告)号：US3839795A

公开(公告)日：1974-10-08

申请号：US35477673

申请日：1973-04-26

Applicant: MC CULLOCH CORP

Inventor： DOOLEY J

IPC: B27G19/06 ,  B27B17/08 ,  B27B17/10

CPC classification number: B27B17/10 ,  B27B17/083 ,  Y10T83/04 ,  Y10T83/8878

Abstract: A method and apparatus for preventing injury to an operator of a chain saw of the type having a housing including a frame handle and a control handle, a guide rail connected to the housing, a cutting chain operably carried by the guide rail, power means mounted within the housing including a drive shaft operably connectable with the cutting chain, sprocket means meshed in driving engagement with the cutting chain and clutch means at least in part connected to the drive shaft and operable for selectively connecting the drive shaft and the clutch means for driving the cutting chain. The apparatus includes in combination with the foregoing described chain saw a disc means fixedly connected to the sprocket and operably engageable with the clutch means in a driving relationship. Means are provided for biasing at least a portion of the disc into operable driving engagement with the clutch means. A cam means is connected within the housing and is operably engageable with the disc. An actuation system is connected to the housing for actuating the cam against the disc in response to at least one of an abrupt upward pivot or ''''kick'''' of the guide rail generally about the center of gravity of the chain saw and physical engagement of at least a portion of the actuation system by an operator''s hand slipping from the frame handle. Actuation of this system serves to overcome the bias and disengage the disc from driving engagement with the clutch to thus remove driving torque from the cutting chain. An independent apparatus aspect of the invention is the provision of an inertia actuation system for operably disengaging a chain saw drive shaft from a cutting chain in the event an abrupt upward pivot or ''''kick'''' of the guide rail generally about the center of gravity of the chain saw is encountered. The method includes the steps of providing a disc fixedly connected to the cutting chain drive sprocket, biasing a portion of the disc into operable driving engagement with the chain saw clutch and driving the cutting chain by driving torque applied from the drive shaft through the clutch, the disc and the sprocket. The method further includes providing a cam operably carried for rotation within the chain saw housing and being engageable with the disc and actuating the cam in response to at least one of an upward pivot or ''''kick'''' of the guide rail generally about the center of gravity of the chain saw, and physical engagement of at least a portion of the actuating system by an operator''s hand slipping from the frame handle for overcoming the bias on the disc and disengaging the disc from driving engagement with the clutch to remove driving torque from the sprocket and cutting chain.

Abstract translation: 一种用于防止对具有壳体的类型的链锯的操作者的伤害的方法和装置，该壳体包括框架手柄和控制手柄，连接到壳体的导轨，由导轨可操作地承载的切割链，安装 在壳体内，包括可操作地与切割链条连接的驱动轴，与切割链啮合的链轮装置和至少部分地连接到驱动轴的离合器装置，并可操作以选择性地连接驱动轴和用于驱动的​​离合器装置 切割链。

公开(公告)号：US3760141A

公开(公告)日：1973-09-18

申请号：US3760141D

申请日：1971-10-04

Applicant: MC CULLOCH CORP

Inventor： ESPANA S ,  FONT B

IPC: B23K35/30 ,  B23K9/04

CPC classification number: B23K35/3046

Abstract: The nose of a chain saw blade is radiused along its edges. The radiused nose is then grit blasted to roughen its surface and to remove any oxides. A first layer of particulate hard facing material is applied to the radiused nose and fused to obtain a metallurgical bond between the nose and the first layer. A second layer of hard facing is then welded to the prepared first layer with an inert gas shielded arc process without marked penetration into the nose''s parent material. The hard facing is then finished by grinding.

Abstract translation: 链锯的鼻子沿其边缘圆弧。 然后将圆形鼻子进行喷砂处理以使其表面变粗糙并除去任何氧化物。 将第一层颗粒硬质材料施加到圆角鼻部并熔化，以获得鼻子和第一层之间的冶金结合。 然后用惰性气体保护电弧工艺将第二层硬面焊接到制备的第一层上，而没有明显地渗入鼻子的母体材料。 然后通过研磨完成硬面。

公开(公告)号：US3033185A

公开(公告)日：1962-05-08

申请号：US85310659

申请日：1959-11-16

Applicant: MC CULLOCH CORP

Inventor： BURKETT WILFORD B

IPC: F02M1/10

CPC classification number: F02M1/10

公开(公告)号：US3798769A

公开(公告)日：1974-03-26

申请号：US22063272

申请日：1972-01-25

Applicant: MC CULLOCH CORP

Inventor： BAILEY J

IPC: B27B17/00 ,  F01N1/08 ,  F01N3/06 ,  F01N13/00 ,  F01N13/18 ,  F02B63/02 ,  F02B75/02 ,  B27B17/02 ,  F01M1/02

CPC classification number: F01N13/1805 ,  B27B17/00 ,  F01N1/08 ,  F01N3/06 ,  F01N13/002 ,  F01N2450/24 ,  F01N2590/06 ,  F02B63/02 ,  F02B2075/025

Abstract: Apparatus for reducing the noise level of an operating chain saw characterized by synergistically interacting exhaust conduit means, surge chamber means, and acoustic filter means, possibly associated with arcuate deflector means or flexible reed, sound attenuating means.

Abstract translation: 用于降低操作链锯的噪声水平的装置，其特征在于协同地相互作用的排气导管装置，缓冲室装置和声学过滤装置，可能与弓形偏转装置或柔性簧片，声音衰减装置相关联。

公开(公告)号：US3768611A

公开(公告)日：1973-10-30

申请号：US3768611D

申请日：1972-03-28

Applicant: MC CULLOCH CORP

Inventor： FREDERICKSON R

IPC: F16D43/18 ,  F16D43/14

CPC classification number: F16D43/18

Abstract: A centrifugal clutch mechanism comprising a drive member, a driven member and a plurality of centrifugally actuatable clutch shoes connected to the driving member and radially engageable with the driven member. A plurality of C-shaped springs are circumferentially mounted about the clutch shoes to maintain the shoes in a retracted posture when the driving member is idle. The plurality of C-shaped springs are positioned about the clutch shoes with open portions of the C-shaped springs staggered in order to provide a balanced restraining force on the clutch shoes.

Abstract translation: 一种离心离合器机构，包括驱动构件，从动构件和连接到驱动构件并可与从动构件径向接合的多个离心致动离合器靴。 多个C形弹簧围绕离合器靴周向安装，以在驾驶部件空转时将鞋子保持在缩回姿态。 多个C形弹簧围绕离合器靴定位，C形弹簧的开口部分交错排列，以便在离合器鞋上提供平衡的约束力。

公开(公告)号：US3763842A

公开(公告)日：1973-10-09

申请号：US3763842D

申请日：1971-05-05

Applicant: MC CULLOCH CORP

Inventor： DOOLEY J ,  HARASTA C

IPC: F02N3/02 ,  F02N5/00

CPC classification number: F02N3/02

Abstract: A lightweight chain saw including a starting mechanism for starting the saw while the saw engine is cold and a restarting mechanism for restarting the saw while the saw engine is warm. A method and apparatus for rewinding a starter spring characterized by a starter energy generating system which is continuously engaged with a starter spring and by a friction clutch which is continuously engaged with and operable to disable a reaction device in order to divert energy away from the starter spring. Methods and apparatus for indicating the level of energy in an engine mechanism and for permitting selective adjustment of the level of starter energy stored in the mechanism.

Abstract translation: 一种轻型链锯，其包括用于在锯发动机冷时启动锯的启动机构，以及在锯发动机温暖时重新起动锯的重启机构。 一种用于重绕起动弹簧的方法和装置，其特征在于起动器能量产生系统，其与起动器弹簧连续地接合，并且通过摩擦离合器连续地接合并且可操作地阻止反作用装置，以便将能量转移到起动器 弹簧。

公开(公告)号：US3760273A

公开(公告)日：1973-09-18

申请号：US3760273D

申请日：1971-06-24

Applicant: MC CULLOCH CORP

Inventor： BURKETT W ,  CARLSEN G

IPC: G01R21/127 ,  G01N21/00

CPC classification number: G01R21/127

Abstract: A method of measuring a selected unit of energy such as a watt hour comprising the steps of measuring the current flowing through a load, measuring the voltage across the load, generating a first series of periodic pulses related in width to the rms value of the current measured and related in amplitude to the rms value of the voltage measured, integrating the first series of pulses, and generating a second series of pulses related in number to the integral by generating a pulse each time that a capacitor is charged from the integrated signal to a predetermined voltage. The range of measurement is extended by modifying the method so that the first series of pulses are not directly integrated but rather are first converted to a second series of pulses from a constant current source which second series of pulses are integrated. The invention also relates to the electronic circuitry of a watt hour meter including means for generating a series of pulses having a width directly related to the measured current, means for multiplying the series of pulses representing the measured current and the unknown voltage, means for integrating the multiplied signal, and means for developing a series of pulses related in number to the integral by generating a pulse each time that a capacitor is charged from the integrated signal to a predetermined value.

Abstract translation: 一种测量所选择的能量单位（例如瓦特小时）的方法，包括以下步骤：测量流过负载的电流，测量负载两端的电压，产生宽度相关的第一系列周期性脉冲与电流的有效值 测量并相关于所测量的电压的有效值，积分第一系列脉冲，并且通过在每次从积分信号向电容器充电电容器时产生脉冲而产生与数字相关的第二系列脉冲 预定电压。 通过修改该方法来扩展测量范围，使得第一系列脉冲不直接集成，而是首先将恒定电流源的第二系列脉冲转换成第二系列的脉冲。 本发明还涉及一种电度表的电子电路，包括用于产生具有与所测量的电流直接相关的宽度的一系列脉冲的装置，用于将表示测量的电流和未知电压的一系列脉冲相乘的装置，用于积分的装置 相乘信号，以及用于通过在每次将电容器从积分信号充电到预定值时产生脉冲而产生与数字相关的一系列脉冲的装置。