Patent ID: 6899313
Filing Date: 2005-05-31
Classification: F16K

Abstract:
1. A method for controlling a plunger of a magnetic actuator assembly, the method comprising: generating a magnetic flux at said plunger; biasing said plunger by means of said first magnetic flux opposing a first bias from a first spring, said first spring having a first preload; biasing said plunger opposing said first bias with a second spring in series communication with said first spring, said second spring having a second preload less than said first preload, said second preload configured to be adjustable to control the amount of said magnetic flux needed to overcome a net total preload opposing said magnetic flux; generating a second magnetic flux at said plunger; and biasing said plunger by means of said second magnetic flux higher than said first magnetic flux to overcome said net total preload from said first spring and said second spring in series communication.