Cleaning brush with pulsing water
AssigneeWagner Spray Tech Corporation
InventorJeffrey E. Sandahl
Life of this patent
Estimating the term…
Abstract
A paint preparation tool (10) having a distal brush head (18) with a mode valve to switch between continuous spraying under low pressure and pulsed spraying under higher pressure' connected by a hollow tube to a proximal remote control element (14) capable of switching off liquid to the brush head (18), or supplying liquid cleaner solution to the brush head (18) at low pressure or supplying liquid under the higher pressure to the brush head (18) using a rotary spool valve in the control element to actuate the mode valve in the brush head (18). The brush head (18) has bristles for cleaning and a pair of rotating rotors to provide the pulsed spraying under higher pressure.
Claims18
A cleaning apparatus comprising:
- an elongated tube having a first end and a second end;
- a proximal handle at the first end of the elongated tube;
- a remote control element having a plurality of positions;
- a primary flow path through the elongated tube from the first end to the second end;
- and
- a distal brush head at the second end of the elongated tube having a plurality of cleaning elements and a mode valve having a plurality of valves connected to the primary flow path, the mode valve configured to:
- deliver a first liquid, with a first pressure, received from the primary flow path, through a first valve from the plurality of valves and out a first set of cleaning elements from the plurality of cleaning elements in response to the remote control element entering a first position from the plurality of positions, and
- deliver a second liquid, with a second pressure, received from the primary flow path, through a second valve from the plurality of valves and out a second set of cleaning elements from the plurality of cleaning elements in response to the remote control element enter a second position from the plurality of positions.
A tool for cleaning exterior surfaces prior to painting, the tool comprising:
- an elongated tube;
- a proximal handle having a remote control element connected by an elongated tube to a distal brush head, the distal brush head having a mode valve;
- and wherein the mode valve is fluidically coupled to and actuated in response to, fluid pressure changes in the elongated tube;
- and
- wherein the distal brush head is configured to operate in a first operating mode when the fluid provided to the distal brush head is below a threshold pressure and a second operating mode when the fluid provided to the distal brush head is above the threshold pressure, and wherein the second operating mode provides a different cleaning function from the first operating mode, and wherein the first operating mode comprises a first mode valve position and wherein the second operating mode comprises a second mode valve position.
Dependencies are inferred from the claim text.