Mounting cup and valve assembly for pressurized canister

A pressurized spray canister comprising:

• a mounting cup having a perimeter curl and a pedestal portion with a centrally located aperture;
• a valve assembly having valve body with a product inlet communicating with an interior cavity of the valve body, a product outlet being formed in a valve stem being at least partially supported by the valve body, and at least one radial orifice being formed in the valve stem, adjacent a base portion of the valve stem, to provide communication with the product outlet;
• and
• the valve assembly being housed within the pedestal portion and being crimped thereto with a gasket being located between a perimeter sealing surface of the base portion and an adjacent inwardly facing surface of the pedestal portion with a portion of the valve stem supporting the product outlet protruding through an aperture provided in the gasket and the centrally located aperture;
• the spray canister being closed at one end and having an opening being defined by a rim at an opposite end thereof;
• the perimeter curl of the mounting cup being connected to the rim of the canister to permanently support the valve assembly within the canister;
• and
• a spray button, with a discharge orifice, being coupled to the product outlet of the valve stem to facilitate dispensing of the product from the pressurized spray canister;
• wherein a top wall of the pedestal portion is conically shaped such that a first plane, defined by the perimeter engagement between the gasket and the base portion of the valve stem, is axially spaced from a second plane, defined by the perimeter engagement between the gasket and a central portion of the valve stem, to provide an axial spacing along the valve stem for accommodating the at least one radial orifice between the first and second planes.

A method of forming an improved mounting cup and valve assembly combination for an aerosol container, the method comprising the steps of:

• providing a mounting cup with a perimeter curl, for securing the mounting cup to a desired container, and a central pedestal portion with a centrally located aperture being formed in the pedestal portion;
• providing a valve assembly with valve body having a product inlet communicating with an interior cavity of the valve body, and a product outlet being formed in a valve stem being at least partially supported by the valve body, and forming at least one radial orifice in the valve stem, adjacent a base portion of the valve stem, to provide communication with the product outlet;
• and
• housing the valve assembly within the pedestal portion and crimping the valve assembly therein with a gasket being located between a perimeter sealing surface of the base portion and an adjacent inwardly facing surface of the pedestal portion with a portion of the valve stem, supporting the product outlet, protruding through an aperture provided in the gasket and the centrally located aperture;
• contouring a top wall of the pedestal portion to have a conical shape such that a first plane, defined by the perimeter engagement between the gasket and the base portion of the valve stem, is axially spaced along the valve stem from a second plane, defined by the perimeter engagement between the gasket and a central portion of the valve stem, with the at least one radial orifice being formed in the valve stem at a location between the first plane and the second plane.