Aerosol package having compressed gas propellant and vapor tap of minute size
Patent 4940171 Issued on July 10, 1990. Estimated Expiration Date: 
May 18, 2009. 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.
May 18, 2009. 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 3260421 3575323 3647119 Aerosol dispenser using butane propellant Aerosol container valve with means for tapping additional gas Aerosol dispensing system Packaging system Patent #: 4431120 InventorApplicationNo. 354125 filed on 05/18/1989US Classes:222/402.18, Separate inlets for gas and material in duct to valve222/402.1Valve actuated by nozzle or through valve outletExaminersPrimary: Huppert, Michael S.Attorney, Agent or FirmForeign Patent References
International ClassB65D 083/58AbstractAerosol package employs a compressed gas such as carbon dioxide or nitrous oxide as propellant and provides a tiny vapor tap in the aerosol valve body to permit, in a restricted controlled way, the passage of the propellant gas into the aerosol valve. The diameter of the vapor tap is preferably in the range of only about 0.004" to only about 0.008". In a modification a pair of vapor tap openings of 0.006" diameter are formed in the valve. This permits a lesser initial can pressure. | |
