US2004258532A1PendingUtilityA1

Runaway protection for sprayer

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Priority: Jan 15, 2002Filed: Jan 14, 2003Published: Dec 23, 2004
Est. expiryJan 15, 2022(expired)· nominal 20-yr term from priority
Inventors:Robert J. Lind
F04B 2205/05F04B 2207/70F04B 49/065F04B 2205/00F04B 49/06
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PatentIndex Score
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Cited by
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References
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Claims

Abstract

A method for controlling an airless sprayer ( 10 ) having an electronic control ( 12 ) with a user selectable pressure setpoint monitors the actual output pressure developed by the pump ( 14 ). When the pump output pressure drops to a selectable percentage of the setpoint, the control displays an empty message and the unit shuts off.

Claims

exact text as granted — not AI-modified
1 . A method for protecting a pump having a control with a user selectable pressure setpoint comprising the steps of: 
 selecting a setpoint;    monitoring the actual output pressure developed by said pump;    determining when said pump output pressure drops to a predetermined percentage of said setpoint; and    providing a means for indicating an error condition.    
     
     
         2 . The method of  claim 1  wherein said means for indicating an error condition comprises a visual indicator.  
     
     
         3 . The method of  claim 1  wherein said means for indicating an error condition comprises a audio indicator.  
     
     
         4 . The method of  claim 1  wherein said means for indicating an error condition comprises disabling the unit from spraying.

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