4. Pumps
  5. Condition responsive control of pump drive motor
  6. By control of electric or magnetic drive motor

David C. Ludington

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Controlling vacuum level with a two-level vacuum system controll

Fluid handling – Line condition change responsive valves – Pilot or servo controlled
Patent

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Two-level vacuum system controller with adjustable speed drive

Pumps – Condition responsive control of pump drive motor – By control of electric or magnetic drive motor
Patent

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Vacuum level control system using variable frequency drive

Animal husbandry – Milkers – With automatic control
Patent

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Vacuum level control system using variable frequency drive

Animal husbandry – Milkers – With automatic control
Patent

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Profile ID: LFUS-PAI-P-602875

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