Propellant-free pressurized material dispenser

摘要

Devices and methods for dispensing a fluidly dispensable material under pressure but without using a gas propellant are presented. In some embodiments an elastic sleeve is utilized to impart pressure to a bag of dispensable material positioned within the sleeve. Pressure so created pressurizes contents of the bag, which can then be dispensed through a valve. Methods for manufacturing various embodiments are presented.

主权项

1. A device for dispensing a material under pressure, comprising:
a) a flexible bag for containing said material and a valve assembly operable to control exit of said material from said bag; and b) an elastic compressing device which comprises a lumen having an open end, said compressing device containing said bag within said lumen with said open end surround a portion of said valve assembly;wherein said compressing device is mounted on said valve assembly to allow movement of said open end of the compressing device with respect to the valve assembly.