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

David A. Stingl

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Emergency shutdown system for a water-circulating pump

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

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Influent blockage detection system

Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate

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Pump and alarm control

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

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Safety release fasteners

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc. – Single element having means facilitating or effecting...
Reexamination Certificate

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Visible screws

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Cap over the head
Patent

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Profile ID: LFUS-PAI-P-1204416

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