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CLEANING APPLIANCE

  • US 20180084898A1
  • Filed: 09/25/2017
  • Published: 03/29/2018
  • Est. Priority Date: 09/26/2016
  • Status: Active Grant
First Claim
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1. A pump assembly for a dental cleaning appliance, the pump assembly comprising:

  • a positive displacement pump comprising a fluid chamber having a fluid inlet connectable to a source of fluid, a fluid outlet, and a fluid displacement member;

    a drive for actuating the pump to move the fluid displacement member relative to the fluid chamber along a first linear path to draw fluid into the fluid chamber through the fluid inlet;

    an energy storer that converts kinetic energy generated during actuation of the pump by the drive into potential energy, and stores the potential energy;

    a first coupling member connected to the pump and a second coupling member connected to the drive, the coupling members coupling together to enable the drive to actuate the pump to draw fluid into the fluid chamber, anda decoupler for decoupling the coupling members to enable the energy storer to use stored potential energy to actuate the pump in reverse to urge a burst of fluid from the fluid chamber through the fluid outlet;

    wherein the drive is configured to move the second coupling member reciprocally along a second linear path which is co-axially aligned with the first linear path.

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