Patent ID: 8424720
Filing Date: 2013-04-23
Classification: B05C,F04B

Abstract:
1. A method of dispensing viscous material on an electronic substrate by driving reciprocating movement of a piston within a dispensing bore of a dispenser unit configured to dispense the viscous material, the method comprising: providing a motor to drive the movement of the piston within the dispensing bore, the motor including a rotating shaft, a wheel coupled to the rotating shaft, the wheel having a plurality of drive magnets disposed circumferentially around the wheel, and a driven magnet coupled to the piston to drive the axial movement of the piston, wherein the motor further includes a magnet guide having a bore configured to receive the driven magnet; rotating the plurality of drive magnets with the motor to cause the movement of the piston; and ejecting a quantity of viscous material when moving the piston.