Patent ID: 7080936
Filing Date: 2006-07-25
Classification: B01F

Abstract:
1. A wrap spring clutch syringe ram comprising: a motor; a flywheel being driven by said motor; a slide platform being driven linearly by rotation of a lead screw; at least one syringe, a plunger of each said at least one syringe being pushed by said slide platform; and a wrap spring clutch engaging and thereby coupling the rotation of said flywheel with said lead screw to drive said slide platform, said wrap spring clutch being actuated by a solenoid, said flywheel having a substantial mass, said substantial mass providing rotational stability when said lead screw is coupled to said motor, said wrap spring clutch disengaging and thereby decoupling said flywheel from said lead screw, said wrap spring clutch initiating rotation of said lead screw.