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    • 2. 发明授权
    • Lubricant feed system
    • 润滑剂进料系统
    • US4094382A
    • 1978-06-13
    • US699001
    • 1976-06-21
    • Arthur Lee
    • Arthur Lee
    • B27B17/12F16N13/08
    • B27B17/12
    • A lubricant feed system for use in lubricating the cutting attachments of a chain saw having an internal combustion engine and a lubricant tank. The feed system has a system of passageways permitting flow of lubricant from the tank to the guide bar. A check valve and a manually operable plunger are positioned in the passageway and spaced from each other to define a first chamber. The check valve permits flow from the tank to the bar pad and is openable by pressure in the tank. A metering valve for regulating the flow from the check valve to the bar pad is reciprocable between a closed and an opened position. The reciprocation and thus the position of the valve are controllable by manually operable means extending from the metering valve to the exterior. The metering valve has means to urge it to the closed position. The urging means exerts a force that can be overcome by operation of the plunger. There are means to permit the metering valve to move to a fully open position by the operation of the plunger regardless of the position of the metering valve. Thus operation of the plunger closes the check valve, opens fully the metering valve and forces lubricant contained in the first chamber through the system of passageways to clear any obstruction in said passageways.
    • 一种用于润滑具有内燃机和润滑剂罐的链锯的切割附件的润滑剂进料系统。 进料系统具有允许润滑剂从罐到导杆流动的通道系统。 止回阀和可手动操作的柱塞定位在通道中并且彼此间隔开以限定第一室。 止回阀允许从罐移动到杆垫,并且可以通过罐中的压力打开。 用于调节从止回阀到杆垫的流量的计量阀可在闭合位置和打开位置之间往复运动。 阀的往复运动以及因此的位置可通过从计量阀向外部延伸的手动操作的装置来控制。 计量阀具有将其推至关闭位置的装置。 推动装置施加能够通过柱塞的操作来克服的力。 存在允许计量阀通过柱塞的操作而移动到完全打开位置的方式,而与计量阀的位置无关。 因此,柱塞的操作关闭止回阀,完全打开计量阀,并通过通道系统迫使容纳在第一腔室中的润滑剂清除所述通道中的任何障碍物。