Grommet or fill valve for an aerosol container

Details Grommet or fill valve for an aerosol container Grommet or fill valve for an aerosol container

2007-06-05

2007-06-05

Douglas, Steven O. (Department: 3771)

Fluent material handling, with receiver or receiver coacting mea

Filling or refilling of dispensers

Aerosols

C141S003000, C141S301000

Reexamination Certificate

active

11256422

ABSTRACT:
The present invention is directed to an improvement for a fill valve (22) for an aerosol container (10, 30) to provide better sealing capability. The fill valve is made using a flashless injection molding process in which both the mold cavity and molding material are heated to elevated temperatures to significantly improve cross-linking which occurs during the molding process. A backside (22a) of the fill valve now has a recessed portion (56) to facilitate ejection of the valve from a mold so leak paths are not created due to the forces applied to the valve during its extraction from the mold. The recessed portion reduces the amount of material required to make the fill valve and makes the fill valve flexible to aid in providing a good seal against leakage of a propellant from the container after filling.

REFERENCES:
patent: 3337091 (1967-08-01), Bartels
patent: 3522900 (1970-08-01), Nicholson
patent: 3981119 (1976-09-01), Schultz
patent: 4658979 (1987-04-01), Mietz et al.
patent: 6729362 (2004-05-01), Scheindel
patent: 6945284 (2005-09-01), Hurd et al.
patent: 0560573 (1993-03-01), None
patent: 0560573 (1993-03-01), None
patent: WO 9737894 (1997-10-01), None
European Search Report mailed May 22, 2006 Aerosol Technology; Spray Technology & Marketing, Jan. 2002 pp. 22-24 and 26-28.
High-Flow Thermoplastic Vulcantizers; Plastic Engineering, Aug. 1996, pp. 37-39.

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