Spraying method and device for applying a film to a workpiece
Patent 4713257 Issued on December 15, 1987. Estimated Expiration Date: 
February 19, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 19, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2829006 3385526 3599038 3764068 3927833 Method for the manufacturing of fibre reinforced building structures surface coatings Patent #: 4263346 InventorAssigneeApplicationNo. 06/830972 filed on 02/19/1986US Classes:427/483, Utilizing apparatus to atomize and electrostatically charge liquid coating material (e.g., charging electrode adjacent spray source, etc.)239/296, Plural sets of gas jet orifices239/3, Including electrostatic charging239/300, Adjustable gas flow directing or controlling means239/696, Having plural exit openings239/706, With charging electrode mounted on spray device239/708, Pressurized spray material239/8, Including mixing or combining with air, gas or steam427/424, Moving the base427/426, Ingredients supplied separately427/475Solid particles or atomized liquid appliedExaminersPrimary: Lawrence, Evan K.Attorney, Agent or FirmInternational ClassesB05B 5/03 (20060101)B05B 5/025 (20060101) Foreign Application Priority Data1985-02-19 DEAbstractA spray gun for applying a film to a workpiece has a spray head provided with an annular nozzle designed to discharge material which is to undergo pneumatic atomization. A second annular nozzle surrounds the pneumatic material discharge nozzle and is designed to discharge atomizing air for pneumatic atomization of the material issuing from the pneumatic material discharge nozzle. The spray head is further provided with an additional material discharge nozzle designed to discharge material which is to undergo hydrostatic atomization. The hydrostatic material discharge nozzle is disposed centrally of, and is surrounded by, the pneumatic material discharge nozzle. The hydrostatic material discharge nozzle forms a first spray of hydrostatically atomized material while the annular nozzles form a hollow conical second spray which surrounds the first spray when both sprays are on simultaneously. The spray gun is capable of creating a spray pattern exhibiting the characteristics of a pneumatically generated spray as well as the characteristics of a hydrostatically generated spray. The material supplied to the pneumatic material discharge nozzle may be the same as that supplied to the hydrostatic material discharge nozzle or each of these nozzles may be supplied with a different component of a two-component substance.Field of SearchWith partial preliminary mixingFlow means of one fluid surrounds the other at outlet At least three diverse fluids Including electrostatic charging Including mixing or combining with air, gas or steam And additional dissolving or entraining of material in liquid stream Of discharge modification of flow varying With air outlet forward of material outlet With charging electrode mounted on spray device Extending forward of material outlet Pressurized spray material Plural sets of gas jet orifices Adjustable gas flow directing or controlling means INCLUDING SUPPLEMENTAL GAS SHAPING OR SHIELDING JET Having plural exit openings Single trigger for plural valve actuators For sequentially opened valves Multiway valve or single operator for plural valves | |
