US3854495A — Pressure regulator

Claim 1

Independent Claim 245 words

Gas flow regulator including: a casing, a metal tube having an open end for connection to a high pressure gas source, said tube ending in a resiliently deformable straight metal extent terminating in said open end, a seat member defining therein a closed well with an inner bore defined by a metal wall to receive said straight tube portion in said well bore with predetermined clearance; said metal wall being tapered substantially up to said seat to provide that the said predetermined clearance from such tube will be decreasing in the direction approaching said seat, whereby said resiliently deformable tube and the tapering wall interact to provide a throttling action on gases passing therebetween, and so that such throttling action will increase as said tube open end approaches said seat, material of lesser hardness than the tube and of lesser hardness than the metal wall located in the base of said well, shaped to form a seat for said tube open end, means defining a chamber to receive gas originating with said tube and emerging from said well, a pressure responsive linear actuator responsive to the pressure in said chamber relative to pressure exterior thereto and connected to relatively move said tube open end away from said sEat when said relative pressure in said chamber falls below a predetermined value and to relatively move said tube open end into contact with said seat when said relative pressure in said chamber rises above a predetermined value.

Claim 2

Dependent Claim 245 words

Gas flow regulator including: a casing, a metal tube having an open end for connection to a high pressure gas source, said tube ending in a resiliently deformable straight metal extent terminating in said open end, a seat member defining therein a closed well with an inner bore defined by a metal wall to receive said straight tube portion in said well bore with predetermined clearance; said metal wall being tapered substantially up to said seat to provide that the said predetermined clearance from such tube will be decreasing in the direction approaching said seat, whereby said resiliently deformable tube and the tapering wall interact to provide a throttling action on gases passing therebetween, and so that such throttling action will increase as said tube open end approaches said seat, material of lesser hardness than the tube and of lesser hardness than the metal wall located in the base of said well, shaped to form a seat for said tube open end, means defining a chamber to receive gas originating with said tube and emerging from said well, a pressure responsive linear actuator responsive to the pressure in said chamber relative to pressure exterior thereto and connected to relatively move said tube open end away from said sEat when said relative pressure in said chamber falls below a predetermined value and to relatively move said tube open end into contact with said seat when said relative pressure in said chamber rises above a predetermined value.

Claim 3

Dependent Claim 191 words

A gas flow regulator as claimed in claim 1 wherein said chamber is a bellows chamber defined by a pair of end members and a resilient bellows wall extending between them; whereby an increase of differential pressure from inside to outside across the bellows wall tends to expand the bellows chamber by increasing the spacing of the end members and a decrease of said differential pressure across the bellows will tend to contract the bellows chamber by allowing the end members to approach one another, said bellows wall being designed to provide a bias opposing the differential pressure, and wherein said bellows chamber, defined as aforesaid, embodies said pressure responsive linear actuator, said tube being connected to move with one of said end members, and said seat member being connected to move with the other of said end members, the connection of said tube to said one end member and the connection of said seat member to said other end member being designed so that expansion of the bellows chamber moves said tube end toward said seat and contraction of the bellows chamber moves said tube end away from said seat.

Claim 4

Dependent Claim 85 words

A device as claimed in claim 1 wherein said well bore is connected by an aperture to said chamber, where said aperture is of large area relative to the cross-sectional area defined by the clearance between the outer wall of the tube and the inner wall of the bore and wherein said aperture is located so that its inner end is at least partially exposed by a predetermined amount of movement in the retraction direction of said tube open end relative to said well bore.

Claim 5

Dependent Claim 85 words

A device as claimed in claim 2 wherein said well bore is connected by an aperture to said chamber, where said aperture is of large area relative to the cross-sectional area defined by the clearance between the outer wall of the tube and the inner wall of the bore and wherein said aperture is located so that its inner end is at least partially exposed by a predetermined amount of movement in the retraction direction of said tube open end relative to said well bore.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1977-12-16	1978-06-17	1978-12-17	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1981-12-16	1982-06-17	1982-12-17	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1985-12-16	1986-06-17	1986-12-17	$7700.00	Window Closed / Lapsed

Pressure regulator

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