Regulator
First Claim
1. A pressure regulator comprising:
- a casing, a first chamber and a second chamber defined in said casing and separated by a first regulating piston movable during the pressure-regulating operation for varying the size of said chambers and a permanently open channel in said piston providing a fluid communication between said first and second chambers;
a high-pressure chamber disposed beneath the bottom of said second chamber and connectable to a gas container;
a first aperture extending in the bottom of said second chamber;
a high-pressure piston disposed in said high-pressure chamber and having one end projecting into said second chamber through said first aperture and being displaceable in its longitudinal direction through said first aperture;
a second aperture provided in said projecting end of said high-pressure piston;
a throttle device located between said high-pressure chamber and said second chamber and including means provided in said second aperture and cooperating with said first regulating piston at a first end facing said second aperture;
a fluid connection in said high-pressure piston between said second aperture and the outside of said high-pressure piston in said high-pressure chamber;
a first spring member, which urges said high-pressure piston towards the bottom of said high-pressure chamber;
a second spring member which urges said first regulating piston in the direction away from said means in said second aperture; and
means for deactivation of said regulator provided in the upper wall of said first chamber cooperating with a second end of said first regulating piston.
3 Assignments
0 Petitions
Accused Products
Abstract
A pressure regulator has a first and a second chamber which are separated by a movable piston varying the size of the chambers and which are in fluid contact with one another through a channel extending in the movable piston. The piston has a greater pressure surface area in the first chamber than in the second chamber. A high-pressure chamber beneath the bottom of the second chamber, has an aperture disposed in the bottom of the second chamber. A valve seat is disposed in the second chamber and cooperates with the movable piston to form a throttle between the high-pressure chamber and the second chamber. A high-pressure piston disposed in the high-pressure chamber projects into the second chamber through the first aperture and is displaceable in its longitudinal direction therethrough. A second aperture is provided at the end of the high-pressure piston which faces the second chamber. Also, a channel in the high-pressure piston extends from the second aperture throughout the entire high-pressure piston. The regulator may include a warning device. It may also be used to ensure a constant gas flow to, for example, an emergency escape breathing apparatus.
53 Citations
29 Claims
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1. A pressure regulator comprising:
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a casing, a first chamber and a second chamber defined in said casing and separated by a first regulating piston movable during the pressure-regulating operation for varying the size of said chambers and a permanently open channel in said piston providing a fluid communication between said first and second chambers; a high-pressure chamber disposed beneath the bottom of said second chamber and connectable to a gas container; a first aperture extending in the bottom of said second chamber; a high-pressure piston disposed in said high-pressure chamber and having one end projecting into said second chamber through said first aperture and being displaceable in its longitudinal direction through said first aperture; a second aperture provided in said projecting end of said high-pressure piston; a throttle device located between said high-pressure chamber and said second chamber and including means provided in said second aperture and cooperating with said first regulating piston at a first end facing said second aperture; a fluid connection in said high-pressure piston between said second aperture and the outside of said high-pressure piston in said high-pressure chamber; a first spring member, which urges said high-pressure piston towards the bottom of said high-pressure chamber; a second spring member which urges said first regulating piston in the direction away from said means in said second aperture; and means for deactivation of said regulator provided in the upper wall of said first chamber cooperating with a second end of said first regulating piston. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification