Patent EA-001015-B1 (EA)
Title: Spray device with nozzle and valve
Inventor: HALLTORP SVEN ERIK INGEMAR
IPC: B05B1/30
Filed: 1998-04-20
Abstract: 1. A spray device comprising a valve and a nozzle for ejecting a jet of fluid, characterised by a nozzle holder (6; 6, 15, 16, 19) which is adapted to be gripped manually when using the spray device and which is movable relative to the nozzle essentially in parallel with the direction of the jet of fluid, and a valve which is connected in front of the nozzle and is adapted to open when moving the nozzle holder in the direction of the jet of fluid relative to the nozzle, which is biased in the direction of the jet of fluid relative to the nozzle holder (6), the relative position of the nozzle holder to the nozzle being affected by the reaction power of the jet of fluid. 2. A spray device as claimed in claim 1, characterised by a pressure spring (10) which is compressed between the nozzle and the nozzle holder (6) to produce the bias. 3. A spray device as claimed in claim 1 or 2, characterised in that the nozzle holder comprises a sleeve (6). 4. A spray device as claimed in claim 3, characterised in that the sleeve (6) is movable on a spindle (1) with axial, non-connected bores (2, 3), which lead to openings (4, 5) in the outside of the spindle, and that the sleeve has a connection to connect, when moving in the direction of the jet of fluid relative to the nozzle, the two bores to each other. 5. A spray device as claimed in claim 3 or 4, characterised in that the nozzle holder further comprises a handle (19) which is movable essentially in parallel with the direction of the jet of fluid, and a gear (15, 16) which is adapted to transform a movement of the handle relative to the nozzle in the direction of the jet of fluid into a smaller movement of the sleeve (6) relative to the nozzle in the same direction. 6. A spray device as claimed in claim 4, characterised in that the nozzle holder also comprises a handle (19) which is axially displaceably arranged in the periphery of the spindle (1) and the sleeve (6), and a gear lever (15, 16) which is arranged behind the sleeve (6) seen in the direction of the jet of fluid, that the handle (19) has a recess (20) for receiving the gear lever (15, 16), and that the recess (20) in the handle (19), when moving in the direction of the jet of fluid, is adapted to engage the gear lever (15, 16) which is adapted to push the sleeve (6) forwards to the open position of the valve. 7. A spray device as claimed in claim 6, characterised in that the gear lever (15, 16) comprises a crowbar (15) fixedly arranged on a piece of spring steel (16), and that the end of the piece of spring steel (16) opposite to the crowbar (25) has a recess (18) for receiving the spindle (1). 8. A spray device as claimed in any one of claims 4-7, characterised in that the connection of the sleeve (6) has a pressure-absorbing area in the direction of the jet of fluid, said area being smaller than its pressure-absorbing area in the opposite direction. 9. A spray device as claimed in claim 8, characterised in that the spindle (1) has an increase in radius in the direction of the jet of fluid between the pressure-absorbing areas. 10. A spray device as claimed in any one of claims 4-9, characterised in that the sleeve (6) between its ends has an axially extended portion (7) with an increased inner radius, and that the distance between the openings (4, 5) does not exceed the length of the portion with an increased inner radius. 11. A spray device as claimed in claim 10, characterised by a lug (8) projecting from the spindle (1) and arranged between the openings (2, 3), said lug being adapted to engage an end wall (9) of the portion (7) with an increased inner radius when the valve is closed. 12. A spray device as claimed in claim 11, characterised in that the lug (8) comprises a packing arranged on the spindle (1).