Aerosol dispenser
First Claim
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1. A piezoelectric aerosol dispenser comprising:
- a nozzle chamber for holding a fluid to be dispensed and a diaphragm forming at least a portion of said chamber and having an aerosol dispensing nozzle disposed therein, said chamber including a nozzle region proximate said nozzle and a larger reservoir region interconnected to said nozzle region;
backflow restrictive means for introducing fluid from said reservoir region to said nozzle region and restricting backflow from said nozzle region to said reservoir region, said backflow restrictive means formed in part by said diaphragm; and
means, including piezoelectric bender means, for driving fluid from said reservoir to said nozzle region and from said nozzle region through said nozzle to create an aerosol spray.
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Abstract
An aerosol dispenser including a nozzle chamber for holding fluid to be dispensed and a diaphragm forming at least a portion of the chamber and having an aerosol dispensing nozzle disposed therein. The chamber includes a nozzle region proximate the nozzle and a larger reservoir region interconnected to the nozzle region. There is a restrictive passage for introducing fluid from the reservoir region to the nozzle region and restricting backflow from the nozzle region to the reservoir region. A driver, typically a piezoelectric bender, is provided to drive fluid from the reservoir region to the nozzle region and from the nozzle region through the nozzle to create an aerosol spray.
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Citations
50 Claims
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1. A piezoelectric aerosol dispenser comprising:
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a nozzle chamber for holding a fluid to be dispensed and a diaphragm forming at least a portion of said chamber and having an aerosol dispensing nozzle disposed therein, said chamber including a nozzle region proximate said nozzle and a larger reservoir region interconnected to said nozzle region; backflow restrictive means for introducing fluid from said reservoir region to said nozzle region and restricting backflow from said nozzle region to said reservoir region, said backflow restrictive means formed in part by said diaphragm; and means, including piezoelectric bender means, for driving fluid from said reservoir to said nozzle region and from said nozzle region through said nozzle to create an aerosol spray. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A piezoelectric aerosol dispenser comprising:
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a nozzle chamber for holding a fluid to be dispensed and a generally concave diaphragm forming at least a portion of said chamber and having a central convex portion with an aerosol forming nozzle disposed therein, said convex portion forming a nozzle region in said chamber, said nozzle chamber further including a larger reservoir region interconnected with said nozzle region; backflow restrictive means for introducing fluid from said reservoir region to said nozzle region, said backflow restrictive means formed is part by said diaphragm; and means, including piezoelectric bender means, for driving fluid from said reservoir region to said nozzle region and from said nozzle region through said nozzle to create an aerosol spray, said backflow restrictive means being responsive to flexing of said bender means for narrowing the passage connecting said nozzle region and said reservoir region to restrict backflow from said nozzle region to said reservoir region.
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29. A piezoelectric aerosol dispenser comprising:
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a nozzle chamber for holding a fluid to be dispensed and a generally concave diaphragm forming at least a portion of said chamber and having a central convex portion with an aerosol forming nozzle disposed therein, said convex portion forming a nozzle region in said chamber, said chamber further including a larger reservoir region interconnected with said nozzle region; backflow restrictive means for introducing fluid from said reservoir region to said nozzle region, said backflow restrictive means formed in part by said diaphragm; means, including piezoelectric bender means, for driving fluid from said reservoir region to said nozzle region and from said nozzle region through said nozzle to create an aerosol spray, said backflow restrictive means being responsive to flexing of said bender means for narrowing the passage connecting said nozzle region and said reservoir region to restrict backflow from said nozzle region to said reservoir region; a flexible member interposed between said diaphragm and said bender means; and means for transmitting bender deflection to flex said flexible member and pressurize said fluid in said nozzle region.
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30. A piezeoelectric aerosol dispenser comprising:
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a nozzle chamber for holding a fluid to be dispensed and a generally concave diaphragm forming at least a portion of said chamber and having a central convex portion with an aerosol forming nozzle disposed therein, said convex portion forming a nozzle region in said chamber, said nozzle chamber further including a larger reservoir region interconnected with said nozzle region and a flexible wall portion connected to said diaphragm; backflow restrictive means for introducing fluid from said reservoir region to said nozzle region, said backflow restrictive means formed in part by said diaphragm; and means, including piezeoelectric bender means, for driving fluid from said reservoir region to said nozzle region and from said nozzle region through said nozzle to create an aerosol spray said flexible wall portion being responsive to deflection of said bender means for flexing to pressurize said fluid in said nozzle region of said chamber, and said backflow restrictive means being responsive to flexing of said bender means for narrowing the passage connecting said nozzle region and said reservoir region to restrict backflow from said nozzle region to said reservoir region.
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31. A piezoelectric aerosol dispenser comprising:
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a nozzle chamber for holding a fluid to be dispensed and a generally concave diaphragm forming at least a portion of said chamber and including a substantially flat central region with an aerosol dispensing nozzle disposed therein, said chamber including a nozzle region and a larger reservoir region interconnected to said nozzle region; backflow restrictive means for introducing fluid from said reservoir region to said nozzle region, said backflow restrictive means formed in part by said diaphragm; and means, including piezeoelectric bender means which forms at least a portion of the wall of said chamber, for driving fluid from said reservoir region to said nozzle region and from nozzle region through said nozzle to create an aerosol spray, said backflow restrictive means being responsive to flexing of said bender means for narrowing the passage connecting said nozzle region and said reservoir region to restrict backflow from said nozzle region to said reservoir region.
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32. A piezoelectric aerosol dispenser comprising:
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a nozzle chamber for holding a fluid to be dispensed and a substantially flat diaphragm forming at least a portion of said chamber and having an aerosol dispensing nozzle disposed therein;
said chamber including a nozzle region and a larger reservoir region interconnected with said nozzle region;backflow restrictive means for introducing fluid from said reservoir region to said nozzle region, said backflow restrictive means formed in part by said diaphragm; and means for driving fluid from said reservoir region to said nozzle region and from said nozzle region through said nozzle to create an aerosol spray, including piezoelectric bender means and a pressurizing member attached at one end to said bender means, the opposite end being proximate said nozzle, said nozzle region being located between the opposite end of said pressurizing member and said nozzle, and said backflow restrictive means being responsive to flexing of said bender means for narrowing the passage connecting said nozzle region and said reservoir region to restrict backflow from said nozzle region to said reservoir region.
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33. An aerosol dispenser comprising:
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a nozzle chamber for holding a fluid to be dispensed and a diaphragm forming at least a portion of said chamber and having an aerosol dispensing nozzle disposed therein, said chamber including a nozzle region proximate said nozzle and a larger reservoir region interconnected to said nozzle region; backflow restrictive means for introducing fluid from said reservoir region to said nozzle region and restricting backflow from said nozzle region to said reservoir region, said backflow restrictive means formed in part by said diaphragm; and means for driving fluid from said reservoir region to said nozzle region and from said nozzle region through said nozzle to create an aerosol spray. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A piezoelectric aerosol dispenser comprising:
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a nozzle chamber for holding a fluid to be dispensed and a diaphragm forming at least a portion of said chamber and having an aerosol dispensing nozzle disposed therein, said chamber including a nozzle region proximate said nozzle and a larger reservoir region interconnected to said nozzle region, backflow restrictive means for introducing fluid from said reservoir region to said nozzle region, said backflow restrictive means formed in part by said diaphragm; and means, including piezeoelectric bender means, for driving fluid from said reservoir region to said nozzle region and from said nozzle region through said nozzle to create an aerosol spray, said backflow restrictive means being responsive to flexing of said bender means for narrowing the passage connecting said nozzle region and said reservoir region to restrict backflow from said nozzle region to said reservoir region.
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45. A piezoelectric aerosol dispenser comprising:
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a nozzle chamber for holding a fluid to be dispensed and a diaphragm forming at a portion of said chamber and having an aerosol dispensing nozzle disposed therein, said chamber including a nozzle region proximate said nozzle and a larger reservoir region interconnected to said nozzle region; backflow restrictive means for introducing fluid from said reservoir region to said nozzle region, said backflow restrictive means formed in part by said diaphragm; and means for driving fluid from said reservoir region to said nozzle region and from said nozzle region through said nozzle to create an aerosol spray, said backflow restrictive means being responsive to said means for driving for constricting the passage connecting said nozzle region and said reservoir region to restrict backflow from said nozzle region to said reservoir region.
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46. A piezoelectric aerosol dispenser comprising:
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a nozzle chamber for holding a fluid to be dispensed and diaphragm forming at least a portion of said chamber and having an aerosol dispensing nozzle disposed therein, said diaphragm further including a concave section within which said nozzle is centrally located, said chamber including a nozzle region proximate said nozzle and a larger reservoir region interconnected to said nozzle region; backflow restrictive means, formed between the bottom of the concave section of said diaphragm and said bender means, for introducing fluid from said reservoir region to said nozzle region and restricting backflow from said nozzle region to said reservoir region; and means, including piezoelectric bender means, for driving fluid from said reservoir region to said nozzle region and from said nozzle region through said nozzle to create an aerosol spray.
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47. A piezoelectric aerosol dispenser comprising:
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a nozzle chamber for holding a fluid to be dispensed and diaphragm forming at least a portion of said chamber and having an aerosol dispensing nozzle disposed therein, said diaphragm further including a concave section within which said nozzle is centrally located, said chamber including a nozzle region proximate said nozzle and a larger reservoir region interconnected to said nozzle region; means, including piezoelectric bender means, for driving fluid from said reservoir region to said nozzle region and from said nozzle region through said nozzle to create an aerosol spray; a flexible element interposed between said diaphragm and said bender means and dividing said reservoir region into first and second portions and means for transmitting bender deflection to flex said flexible element and pressurize said fluid in said nozzle region of said nozzle chamber; and restrictive passage means, formed between said flexible element and the bottom of the concave section of said diaphragm, for introducing fluid from said reservoir region to sasid nozzle region and restricting backflow from said nozzle region to said reservoir region.
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48. A piezoelectric aerosol dispenser comprising:
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a nozzle chamber for holding a fluid to be dispensed and a diaphragm forming at least a portion of said chamber and having an aerosol dispensing nozzle disposed therein, said diaphragm further including a concave section within which said nozzle is centrally located, said chamber including a nozzle region proximate said nozzle and a larger reservoir region interconnected to said nozzle region; means, including piezoelectric bender means, for driving fluid from said reservoir region to said nozzle region and from said nozzle region through said nozzle to create an aerosol spray; a flexible wall portion, included in said nozzle chamber and connected to said diaphragm, said wall portion responsive to deflection of said bender means for flexing to pressurize said fluid in said nozzle region of said nozzle chamber; and backflow restrictive means, formed between said flexible wall portion and the bottom of said concave portion of said diaphragm, for introducing fluid from said reservoir region to said nozzle region and restricting backflow from said nozzle region to said reservoir region.
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49. A piezoelectric aerosol dispenser comprising:
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a nozzle chamber for holding a fluid to be dispensed and a diaphragm forming at least a portion of said chamber and having an aerosol dispensing nozzle disposed therein, said chamber including a nozzle region proximate said nozzle and a larger reservoir region interconnected to said nozzle region; means, including piezoelectric bender means, for driving fluid from said reservoir to said nozzle region and from said nozzle region through said nozzle to create an aerosol spray, said means for driving further including a pressurizing member attached at one end to said bender means, the opposite end being proximate to said nozzle, said nozzle region of said chamber being located between the opposite end of said pressure member and said nozzle; and backflow restrictive means, formed between the opposite end of said pressurizing member and said diaphragm, for introducing fluid from said reservoir region to said nozzle region and restricting backflow from said nozzle region to said reservoir region.
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50. An aerosol dispenser comprising:
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a nozzle chamber for holding a fluid to be dispensed and a diaphragm forming at least a portion of said chamber and having an aerosol dispensing nozzle disposed therein;
said diaphragm further including a concave section within which said nozzle is centrally located, said chamber including a nozzle region proximate said nozzle and a larger reservoir region interconnected to said nozzle region;means for driving fluid from said reservoir region to said nozzle region and from said nozzle region through said nozzle to create an aerosol spray; and backflow restrictive means, formed between the bottom of the concave section of said diaphragm and said means for driving, for introducing fluid from said reservoir region to said nozzle region and restricting backflow from said nozzle region to said reservoir region.
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Specification