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    • 3. 发明授权
    • Dispenser-gun assembly for viscous fluids and dispenser therefor
    • 用于粘性流体的分配器枪组件及其分配器
    • US5022563A
    • 1991-06-11
    • US463278
    • 1990-01-10
    • Michael MarchittoSteven F. Lord
    • Michael MarchittoSteven F. Lord
    • B67D7/60
    • B05C17/0123B05C17/014
    • A dispenser for viscous fluids includes a tubular cylindrical barrel member, a dispensing nozzle on one end of the barrel member and a piston element which is sealingly received in the barrel member and slidable therein in a direction toward the nozzle for dispensing a viscous fluid from the barrel member. The barrel member and the piston element are constructed so that the piston element is freely slidable in a reverse direction in the barrel member to relieve the pressure on the fluid in the barrel member after a dispensing operation has been completed and to thereby eliminate post extrusion from the dispenser. The dispenser is operative in combination with a dispenser gun which includes a drive plunger and an advancing mechanism which is operative for advancing the drive plunger in order to advance the piston element of the dispenser in the barrel member thereof. The advancing mechanism is further operative for automatically retracting the drive plunger after a dispensing operation has been completed so that the piston element is free to move rearwardly in the barrel member to relieve the pressure on the fluid in the barrel member.
    • 用于粘性流体的分配器包括管状圆柱形桶构件,在筒构件的一端上的分配喷嘴和密封地容纳在筒构件中的活塞元件,并且沿着朝向喷嘴的方向可滑动,从而从粘合流体 桶成员。 桶构件和活塞元件被构造成使得活塞元件在筒构件中可以相反方向自由滑动,以在分配操作完成之后减轻桶构件中的流体上的压力,从而消除后挤压 分配器 分配器与分配器枪组合操作,分配器枪包括驱动柱塞和前进机构,该机构用于使驱动柱塞前进,以将分配器的活塞元件推进到其筒体中。 推进机构进一步可操作用于在分配操作已经完成之后自动地缩回驱动柱塞,使得活塞元件在筒构件中自由地向后移动以减轻桶构件中的流体的压力。