Single stage, compensated pressure regulator

Claim 2

A core assembly employed in a low-pressure regulator having a flow regulating seating means, a lower cylindrical aperture for guiding a core assembly, and having a diaphragm member in a low pressure chamber, and regulating pressure below 3000 p.s.i. comprising: a. core body having an upper portion and a lower shaft of a diameter conformingly engaging said lower cylindrical aperture of said low-pressure regulator; b. recessed ring in said upper portion of said core body; c. resilient sealing means in said recessed ring adapted to seat against said seating means for sealing in said low-pressure regulator and for regulating flow of fluids therepast; d. aperture means penetrating longitudinally through said core body for establishing communication between said low-pressure chamber and, ultimately, said lower cylindrical aperture of said low-pressure regulator; and e. a stem comprising a first length of roll pin stock of Cshaped cross section with a first length spring-fitted in said aperture means and having a modulus of elasticity sufficient to maintain said first length constant and resist movement of said stem longitudinally of said aperture means under normal operating forces and maintain a second length protruding therefrom and engaging said diaphragm member of said lowpressure regulator; said stem having a passageway traversing from its upper end to its lower end for establishing communication between said low-pressure chamber and said aperture means.

Claim 3

The core assembly of claim 1 wherein there is provided spring means for positively urging said core body toward closed position to engage said sealing means with said seating means and said stem with said diaphragm member; spring retaining means for holding said spring means in place and for effecting said urging of said core body closed; and shaft sealing means for sealing against said lower shaft and for blocking said high-pressure fluids from invading said lower cylindrical aperture of said low-pressure regulator.

Claim 4

The core assembly of claim 2 wherein said core body has said upper portion of a second diameter greater than said diameter of said lower shaft, forms a shoulder, and said spring means engages said shoulder for said urging said core body toward said closed position.

Claim 5

The core assembly of claim 1 wherein said seating means of said regulator comprises a ring lip formed on a portion of said regulator separating said low-pressure chamber from a high-pressure chamber in said regulator and said resilient sealing means comprises a ring annularly disposed between an inner ring and an outer ring of said core body.

Claim 6

The core assembly of claim 1 wherein said aperture means comprises a first aperture penetrating longitudinally through said upper portion of said core body and a second aperture penetrating longitudinally through said lower shaft of said core body and communicating with said first aperture; and said stem conformingly engages said first aperture.

Claim 7

In a low-pressure regulator for reducing pressure in a high-pressure chamber less than 3000 p.s.i. to a few p.s.i. in a low-pressure chamber and employing an adjustable spring opposed by pressure on a diaphragm having a centrally disposed diaphragm member, a flow regulating seating means for sealing, a lower cylindrical aperture for guiding a core assembly, and a core assembly including a core body having an upper portion of enlarged diameter and a lower shaft of reduced diameter, a resilient sealing means in the top of said core body and conformingly fitting said seating means for blocking and regulating flow of fluid from said high-pressure chamber into said low-pressure chamber, and a stem arranged on the low-pressure side of said seating means, extending from said core body aNd engaging said diaphragm member, and operable to unseat said resilient sealing means upon appropriate unbalance of force on said diaphragm and allow fluid to flow from said high-pressure chamber to said low-pressure chamber, the improvement comprising: a. said lower shaft impermeable to fluid from said high-pressure chamber; b. second seating means at the entrance to said lower cylindrical aperture; c. shaft sealing means about said lower shaft and juxtaposed said second seating means for blocking flow of fluid from said high-pressure chamber into said lower cylindrical aperture; d. aperture means penetrating longitudinally through said core body and communicating with said low-pressure chamber and with said lower cylindrical aperture; and e. said stem consisting essentially of a first length of roll pin stock of C-shaped cross section spring-fitted in said aperture means, means maintaining said first length constant, and a second length extending from said core body and engaging said diaphragm member; said means maintaining said first length constant comprising a modulus of elasticity of said roll pin stock effecting a spring fit in said aperture means having a frictional retaining force greater than any force tending to move said roll pin stock within said aperture means in normal operation; said roll pin stock having sufficient strength to transmit the force from said diaphragm member to said core body without distortion and having a passageway running longitudinally therethrough and communicating with said aperture means and said low-pressure chamber.

Claim 8

In a low-pressure regulator for reducing pressure in a high-pressure chamber less than 3000 p.s.i. to a few p.s.i. in a low-pressure chamber and employing an adjustable spring opposed by pressure on a diaphragm having a centrally disposed diaphragm member, a flow regulating seating means for sealing, a lower cylindrical aperture for guiding a core assembly, and a core assembly including a core body having an upper portion of enlarged diameter and a lower shaft of reduced diameter, a resilient sealing means in the top of said core body and conformingly fitting said seating means for blocking and regulating flow of fluid from said high-pressure chamber into said low-pressure chamber, and a stem arranged on the low-pressure side of said seating means, extending from said core body aNd engaging said diaphragm member, and operable to unseat said resilient sealing means upon appropriate unbalance of force on said diaphragm and allow fluid to flow from said high-pressure chamber to said low-pressure chamber, the improvement comprising: a. said lower shaft impermeable to fluid from said high-pressure chamber; b. second seating means at the entrance to said lower cylindrical aperture; c. shaft sealing means about said lower shaft and juxtaposed said second seating means for blocking flow of fluid from said high-pressure chamber into said lower cylindrical aperture; d. aperture means penetrating longitudinally through said core body and communicating with said low-pressure chamber and with said lower cylindrical aperture; and e. said stem consisting essentially of a first length of roll pin stock of C-shaped cross section spring-fitted in said aperture means, means maintaining said first length constant, and a second length extending from said core body and engaging said diaphragm member; said means maintaining said first length constant comprising a modulus of elasticity of said roll pin stock effecting a spring fit in said aperture means having a frictional retaining force greater than any force tending to move said roll pin stock within said aperture means in normal operation; said roll pin stock having sufficient strength to transmit the force from said diaphragm member to said core body without distortion and having a passageway running longitudinally therethrough and communicating with said aperture means and said low-pressure chamber.

Claim 9

The low-pressure regulator of claim 6 wherein said means maintaining said first length constant also includes a shoulder within said aperture means upon which said roll pin stock sits.

Claim 10

The low-pressure regulator of claim 6 wherein said means maintaining said first length constant also includes a shoulder formed on said roll pin stock and sitting upon a wall portion of said aperture means.

Claim 11

A single stage, compensated regulator for regulating pressure below 3000 p.s.i. comprising: a. a body having a high-pressure inlet and a high-pressure chamber in communication therewith a low-pressure outlet and a low-pressure chamber in communication therewith; a core aperture intermediate and communicating with said high-pressure chamber and said low-pressure chamber; and a bottom plug assembly having a lower cylindrical aperture aligned with said core aperture, and a shaft seal seating means at the entrance to, contiguous with, and concentric about said lower cylindrical aperture; b. a regulator top removably affixed to said body and having a compression adjusting means and spring means contiguous therewith, and a diaphragm means responsively engages in said spring means, having a diaphragm member and adapted to seal one side of said low-pressure chamber; c. a bushing removably affixed within said core aperture and having a flow regulating seating means annularly disposed about a flow regulating aperture, d. a core assembly consisting essentially of: i. a core body having an upper portion of enlarged diameter and a lower shaft of reduced diameter for conformingly engaging said lower cylindrical aperture of said bottom plug assembly; ii. recessed ring in said upper portion of said core body; iii. resilient sealing means in said recessed ring adapted to seat against said flow regulating seating means in said bushing for sealing and for regulating flow of fluid therepast; iv. aperture means penetrating longitudinally through said core body and communicating with said lower cylindrical aperture and with said low-pressure chamber; v. a stem conformingly engaging said aperture means and protruding therefrom and engaging said diaphragm member of said regulator top, and having a passageway traversing from its upper end to its lower end and communicating with said low-pressure chamber and said aperture means; said stem being concentrically dIsposed within said flow regulating seating means and said resilient sealing means, having a C-shaped cross section and having a modulus of elasticity sufficient to effect a tight frictional fit with said aperture means sufficient to transmit force from said diaphragm member to said core body without movement of said stem within said aperture means; vi. spring means urging said core body upwardly to engage said resilient sealing means with said flow regulating seating means and said stem with said diaphragm member; vii. shaft sealing means in said shaft seal seating means and sealing against said lower shaft and blocking said fluid in said high-pressure chamber from invading said lower cylindrical aperture; and viii. washer means retaining said shaft sealing means and said spring in their respective places; whereby said regulator maintains a relatively constant, preset pressure opposing said spring means contiguous said compression adjusting means regardless of the pressure in said high-pressure chamber.

Claim 12

A single stage, compensated regulator for regulating pressure below 3000 p.s.i. comprising: a. a body having a high-pressure inlet and a high-pressure chamber in communication therewith a low-pressure outlet and a low-pressure chamber in communication therewith; a core aperture intermediate and communicating with said high-pressure chamber and said low-pressure chamber; and a bottom plug assembly having a lower cylindrical aperture aligned with said core aperture, and a shaft seal seating means at the entrance to, contiguous with, and concentric about said lower cylindrical aperture; b. a regulator top removably affixed to said body and having a compression adjusting means and spring means contiguous therewith, and a diaphragm means responsively engages in said spring means, having a diaphragm member and adapted to seal one side of said low-pressure chamber; c. a bushing removably affixed within said core aperture and having a flow regulating seating means annularly disposed about a flow regulating aperture, d. a core assembly consisting essentially of: i. a core body having an upper portion of enlarged diameter and a lower shaft of reduced diameter for conformingly engaging said lower cylindrical aperture of said bottom plug assembly; ii. recessed ring in said upper portion of said core body; iii. resilient sealing means in said recessed ring adapted to seat against said flow regulating seating means in said bushing for sealing and for regulating flow of fluid therepast; iv. aperture means penetrating longitudinally through said core body and communicating with said lower cylindrical aperture and with said low-pressure chamber; v. a stem conformingly engaging said aperture means and protruding therefrom and engaging said diaphragm member of said regulator top, and having a passageway traversing from its upper end to its lower end and communicating with said low-pressure chamber and said aperture means; said stem being concentrically dIsposed within said flow regulating seating means and said resilient sealing means, having a C-shaped cross section and having a modulus of elasticity sufficient to effect a tight frictional fit with said aperture means sufficient to transmit force from said diaphragm member to said core body without movement of said stem within said aperture means; vi. spring means urging said core body upwardly to engage said resilient sealing means with said flow regulating seating means and said stem with said diaphragm member; vii. shaft sealing means in said shaft seal seating means and sealing against said lower shaft and blocking said fluid in said high-pressure chamber from invading said lower cylindrical aperture; and viii. washer means retaining said shaft sealing means and said spring in their respective places; whereby said regulator maintains a relatively constant, preset pressure opposing said spring means contiguous said compression adjusting means regardless of the pressure in said high-pressure chamber.

Claim 13

The single stage, compensated regulator of claim 8 wherein said aperture means comprises a first aperture penetrating longitudinally through said upper portion of said core body and a second aperture penetrating longitudinally through said lower shaft of said core body and communicating with said first aperture, said stem conformingly engages said first aperture, and said stem is prevented from moving within said aperture by engaging a shoulder contiguous thereto.