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.
Claims14
A cleaning apparatus comprising an elongated tube having a proximal handle and a distal brush head wherein the apparatus is switchable between operating modes at the distal brush head by a user controlling the pressure of liquid delivered by a remote control element at the handle proximal of the user without requiring any separate hydraulic, pneumatic, mechanical or electrical path to control the operational mode of the brush head.
A tool for cleaning exterior surfaces prior to painting, the tool comprising a proximal handle having a remote control element connected by an elongated tube to a distal brush head.
A method of using a tool having a proximal handle connected by an elongated tube to a distal spray and brush head to prepare a surface for painting comprising the steps of:
- a) applying a liquid cleaner to the surface using a back and forth motion by directing a forward spray nozzle located on the distal spray and brush head of the tool towards the surface;
- and
- b) scrubbing the surface with a back and forth motion using a plurality of bristles on the distal spray and brush head of the tool while pulsing water jets are emitted from the distal spray and brush head of the tool to remove dirt from the surface.
A tool for cleaning exterior surfaces prior to painting comprising:
- a) a proximal handle having
- i) a garden hose connection for receiving a flow of water to the tool;
- ii) a reservoir for a liquid cleaner, and
- iii) means for switching a pressure of the flow water leaving the handle;
- b) an elongated tube having a proximal end and a distal end, the proximal end connected to the handle and a fluid passage therethrough for the flow of water from the handle from the proximal end to the distal end;
- and
- c) a distal spray and brush head connected to the distal end of the elongated tube and in fluid communication with the fluid passage wherein the distal spray and brush head includes a first spring loaded valve located at the brush head and movable to:
- i) an OPEN condition at low pressure to allow the liquid cleaner and water delivered at low pressure to be sprayed out the front of the brush head, or
- ii) a CLOSED condition when operation is switched to deliver water only, with the water delivered to the brush head at higher pressure.
A method of switching a cleaning tool between operating modes at a distal brush head of the cleaning tool, the cleaning tool having a remote control element proximal of the user, the method comprising the steps of:
- a) controlling the pressure of liquid delivered by the remote control element to a relatively lower level to place the tool in a first operating mode;
- and
- b) controlling the pressure of liquid delivered by the remote control element to a relatively higher level to place the tool in a second operating mode;
- wherein steps a) and b) are performed by controlling the pressure of the liquid in a primary flow path without any separate hydraulic, pneumatic, mechanical or electrical path other than the primary flow path to control the operational mode of the brush head.
Dependencies are inferred from the claim text.