×

Speed and steering control for a floor maintenance machine

  • US 4,825,500 A
  • Filed: 08/17/1987
  • Issued: 05/02/1989
  • Est. Priority Date: 04/21/1986
  • Status: Expired due to Fees
First Claim
Patent Images

1. A drive control for a floor maintenance scrubber having a squeegee and means for raising it, a vacuum fan and means for shutting it off, and a scrub water supply and means for shutting it off,motor drive means arranged to drive the scrubber wheels, operator controls for providing electrical signals representative of forward, reverse and neutral movement of the scrubber, means for translating said forward, reverse and neutral movement signals into motor drive signals,the means for raising said squeegee being connected to and responsive to the signal indicating reverse movement of the scrubber, the means for shutting off the vacuum fan being connected to and responsive to the signal indicating a neutral condition for the scrubber, a timer connected to said vacuum fan shutoff and delaying operation thereof for a predetermined time after the scrubber is in a neutral movement condition, and the means for shutting off the scrub water supply being connected to and responsive to the signal indicating a neutral condition for the scrubber.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×