Liquid pressure regulator with built-in antidrainage valve

• US 20030121548A1
• Filed: 12/30/2002
• Published: 07/03/2003
• Est. Priority Date: 01/02/2002
• Status: Active Grant

• Current Assignee: Daniel Hector Giordano
• Original Assignee: Daniel Hector Giordano
• Inventors: Giordano, Daniel Hector
• Granted Patent: US 6,820,643 B2
• Time in Patent Office: Days
• US Class Current: 137/505
• CPC Class Codes: F16K 17/30 spring-loaded
• CPC Class Codes: G05D 16/106 Sleeve-like sensing elements; Sensing elements surrounded by the flow path
• CPC Class Codes: Y10T 137/7793 With opening bias [e.g., pressure regulator]
• CPC Class Codes: Y10T 137/7834 Valve seat or external sleeve moves to open valve

Abstract

A pressure regulator assembly includes an inlet portion having a passageway through which liquid passes through the assembly. The assembly includes a plunger movable within the housing to selectively engage the inlet portion or the housing to control the path of liquid through the assembly.

Claims

1. A liquid pressure regulator antidrainage assembly, including in combination:

an inlet portion including passageway means through which a liquid enters the regulator assembly and which is structurally arranged to connect to a source of liquid with said inlet portion including a piston member extending therefrom;

an axial movable plunger portion having a cylinder portion structurally arranged to be located over said piston member of said inlet portion with said inlet portion having a toroidal profile where the plunger rests, with said cylinder portion of said plunger portion having a closed end with two concentric bolts, the first one arranged to sealingly engage in the housing, and the second one slides in a cavity located in the housing, and on the other side an open end defined by a cylindrical sleeve having an annular end structurally arranged to engage said inlet portion to block said passageway, with said annular end having a double conically shaped profile;

a housing portion surrounding said plunger portion and structurally arranged to sealingly engage said inlet portion, said housing portion being structurally arranged to connect to a discharge device, with said housing portion having a cylindrical cavity where the second bolt of the plunger slides in said cavity;

a spring member located between said inlet portion and said plunger portion;

a sealing means located between said piston member of said inlet portion and said plunger portion; and

communication tube members between the rear cavity of said inlet portion and the atmosphere.

2. The liquid pressure regulator in accordance with claim 1, wherein:

the contact point between said inlet portion and said plunger is formed by a toroidal profile in one and a conical profile in the other, with said plunger portion having a closed end with two concentric bolts, the first one arranged to sealingly engage in said housing, and the second one slides in a cavity located in said housing, and wherein

said housing portion includes a cylindrical cavity within which said bolt of said plunger slides.

3. The liquid pressure regulator in accordance with claim 1, wherein the contact point between said inlet portion and said plunger portion is formed by a toroidal profile in one and a conical profile in the other.

4. The liquid pressure regulator in accordance with claim 1, wherein:

a plunger having a closed end with two concentric bolts, the first one arranged to sealingly engage in said housing, and the second one slides in a cavity located in said housing; and

a housing having a cylindrical cavity within which said bolt of said plunger slides.

5. The liquid pressure regulator in accordance with claim 1, wherein said plunger and the rear cavity of said piston of said inlet portion form a chamber connected with the atmosphere through the internal pipes in the inlet portion.

6. The liquid pressure regulator in accordance with claim 1, wherein said sliding plunger has a cylindrical form with one of its ends open, the border of this end having a frustoconical profile, and the other end closed having two concentric bolts, the first one arranged to sealingly engage in said housing, and the second one slides in a cavity located in said housing.

7. The liquid pressure regulator in accordance with claim 1, wherein a housing portion surrounding said plunger portion having this housing a cylindrical cavity where the second bolt of the plunger slides serving it like a guide.

9. The liquid pressure regulator in accordance with claim 2, wherein:

the contact point between said inlet portion and said plunger portion is formed by a toroidal profile in one and a conical profile in the other;

a plunger having a closed end with a rear sliding bolt inside a cavity located in the housing; and

said housing portion includes a cylindrical cavity within which said bolt of said plunger slides.

10. The liquid pressure regulator in accordance with claim 2, wherein the contact point between said inlet portion and said plunger portion is formed by a toroidal profile in one and a conical profile in the other.

11. The liquid pressure regulator in accordance with claim 2, wherein a plunger having a closed end with a rear sliding bolt inside a cavity located in the housing;

and a housing having a cylindrical cavity within which said bolt of said plunger slides.

12. The liquid pressure regulator in accordance with claim 2, wherein said plunger and the rear cavity of said piston of said inlet portion form a chamber connected with the atmosphere through the internal pipes in the inlet portion.

13. The liquid pressure regulator in accordance with claim 2, wherein said sliding plunger has a cylindrical form with one of its ends open, the border of this end having a frustoconical profile, and the other end closed with a sliding bolt inside a cavity located in said housing.

14. The liquid pressure regulator in accordance with claim 2, wherein a housing portion surrounding said plunger portion, this housing having a cylindrical cavity where the second bolt of the plunger slides serving it like a guide.

8. The liquid pressure regulator and antidrainage assembly, including in combination:

an inlet portion including passageway means through which a liquid enters the regulator assembly and which is structurally arranged to connect to a source of liquid, with said inlet portion including a piston member extending therefrom;

an axially movable plunger portion having a cylinder portion structurally arranged to be located over said piston member of said inlet portion, with said inlet portion having a toroidal profile where the plunger rests, with said cylinder portion of said plunger portion having a closed end with a bolt member positioned inside a cavity located in the housing, and on the other side an open end defined by a cylindrical sleeve having an annular end structurally arranged to engage said inlet portion to block said passageway, with said annular end having a double conically shaped profile;

a housing portion surrounding said plunger portion and structurally arranged to sealingly engage said inlet portion, said housing portion being structurally arranged to connect to a discharge device, with said housing portion having a cylindrical cavity where said bolt of the plunger slides in said cavity;

a spring member located between said inlet portion and said plunger portion;

a sealing means located between said piston member of said inlet portion and said plunger portion; and

communication tube members between the rear cavity of said inlet portion and the atmosphere.