초록 ▼

A pressure regulator suitable for an aerosol dispenser package having a compressed non-liquified gas propellant comprising a chamber (22) forming a successive pair of first and second compartments (23,24) with the first compartment (23) having an inlet opening (26,27) and the second compartment (24)

A pressure regulator suitable for an aerosol dispenser package having a compressed non-liquified gas propellant comprising a chamber (22) forming a successive pair of first and second compartments (23,24) with the first compartment (23) having an inlet opening (26,27) and the second compartment (24) partly defining a restricted passageway (47) leading to an outlet opening (25), a diaphragm (41) closing the first compartment remotely from the second compartment, a spring (60) operable to urge the diaphragm to move into the second compartment towards the outlet, and a piston (44) connected for movement with the diaphragm and located in the second compartment to define the restricted passageway, the second compartment and piston cooperating progressively to increase the effective size of the passageway as the diaphragm moves towards the outlet. Preferably a probe (45) is moved with or by the piston to close the chamber outlet when the diaphragm is subject only to action by the spring. Preferably also the regulator has an associated valve (70) with a chamber (71) having a convergently tapered outlet (74) communicated with the regulator inlet, a ball (77) captively housed in the valve chamber for movement into substantially sealed engagement in tapered opening, and the valve chamber being formed by a pair of parts (72,73) connected for mutual telescopic sealed sliding movement about the ball.

대표청구항 ▼

A pressure regulator comprising: a chamber forming a successive pair of compartments at respectively opposite ends thereof, one of said compartments partly defining a restricted passageway leading to an outlet opening from said chamber, and the other of said compartments having an inlet opening into

A pressure regulator comprising: a chamber forming a successive pair of compartments at respectively opposite ends thereof, one of said compartments partly defining a restricted passageway leading to an outlet opening from said chamber, and the other of said compartments having an inlet opening into said chamber; a diaphragm located across one end of said chamber to close said other compartment, said one end being remote from said one compartment; a spring operable to urge said diaphragm to move into said other compartment towards said outlet opening; and a piston connected with said diaphragm for movement therewith and located in said one compartment to define therewith said passageway, said one compartment and piston cooperating progressively to increase the effective size of said passageway as said diaphragm moves towards said outlet opening, said diaphragm having a suspended part and the suspended part having a larger surface area than the mutually facing surface of the piston so that the respective forces acting on the diaphragm-to-piston connection due to an input pressure acting on the surfaces in said other compartment are substantially equal and opposite, whereby the resultant output pressure in said one chamber which acts on the piston surface remote from the diaphragm is determined essentially by the spring-force acting through the diaphragm and its piston connection.