US3589397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antirefill valve
Assignee: Individual
•
Filing: 1970-01-19
•
Granted: 1971-06-29
•
Expires: 1990-01-19
Abstract
Abstract A valve for a pressure vessel to prevent refilling of the vessel. The valve includes a body having a flow through passageway between a first and a second port and a valve component assembly having a primary seat-engaging surface to engage a primary seat in the passageway between the ports. Movement of the assembly to control flow through the valve is by manipulation of an operator. The movement is limited to a predetermined length of displacement of the primary seat-engaging surface from the primary seat. An antirefill sealing member is extendibly connected to the inner end of the valve component assembly and is sized for sealing engagement with a second seat in the passageway. The antirefill sealing member is normally seated when the passageway is closed by the primary seat-engaging member, but, when the operator has been manipulated so as to move it off the primary seat to open the passageway, the antirefill sealing member is buoyed by pressure in the vessel into an open position so that it does not engage the second seat and the valve is open; however, when there is no longer sufficient pressure in the vessel to buoy or float it off of the second seat, if efforts are made to refill the vessel, it remains closed blocking the passageway rendering a pressure vessel to which it is secured a single use vessel.
Inventors
- 👤 William Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:42
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/30; F16K1/304; F16K1/305; F16K35/00; Y; Y10; Y10T; Y10T137/00; Y10T137/7069; Y10T137/7131; Y10T137/7722; Y10T137/7837; Y10T137/7876; Y10T137/7877; Y10T137/8593; Y10T137/87917; Y10T137/88054
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
404 words
A valve for use with a pressure vessel comprising in combination: a. a valve housing having a central bore therethrough, said housing having a port intermediate the central bore, and first and second valve seats in the central bore in spaced relation with respect to one another and each being between the port and one end of the bore, b. a stem component assembly extending into the other end of the bore with one end at all times in the housing, said assembly including (1) a first sealing means in the bore sized to sealingly engage said first valve seat and (2) an extendible portion in the bore including a second sealing means sized to sealingly engage said second seat, c. first mutually intercooperating means interconnecting said housing and said assembly and effective for advancement and withdrawal of the first sealing means with respect to the first valve seat to seat and unseat respectively said first sealing means and said first valve seat to control flow through the central bore between said one end of the bore and the port, d. second mutually intercooperating means interconnecting said extendible portion and assembly and effective for movement of extension of said second sealing means a first predetermined distance with respect to said first sealing means; and e. means on the valve and in the path of movement of said valve component assembly effective to limit withdrawal movement of said first sealing means to a predetermined maximum distance of displacement from said first valve seat which is less than said first predetermined distance; f. whereby, when (1) the valve is mounted to a pressure vessel, (2) the pressure vessel has been filled, and (3) the limit means limit movement of withdrawal of the first sealing means, then (1) said first sealing means are adapted to be moved into and out sealing engagement with said first valve seat to control flow of pressurized fluid between the port and said one end of the bore, and (2) said second sealing means are buoyed by the pressure in the vessel out of sealing engagement with said second valve seat so long as the pressure in the vessel is substantially greater than at the port and, if the pressure at the port exceeds that of the pressure in the vessel, the second sealing means engages said second valve seat and closing the valve so that the pressure vessel cannot be recharged.
Claim 2
Dependent Claim
404 words
A valve for use with a pressure vessel comprising in combination: a. a valve housing having a central bore therethrough, said housing having a port intermediate the central bore, and first and second valve seats in the central bore in spaced relation with respect to one another and each being between the port and one end of the bore, b. a stem component assembly extending into the other end of the bore with one end at all times in the housing, said assembly including (1) a first sealing means in the bore sized to sealingly engage said first valve seat and (2) an extendible portion in the bore including a second sealing means sized to sealingly engage said second seat, c. first mutually intercooperating means interconnecting said housing and said assembly and effective for advancement and withdrawal of the first sealing means with respect to the first valve seat to seat and unseat respectively said first sealing means and said first valve seat to control flow through the central bore between said one end of the bore and the port, d. second mutually intercooperating means interconnecting said extendible portion and assembly and effective for movement of extension of said second sealing means a first predetermined distance with respect to said first sealing means; and e. means on the valve and in the path of movement of said valve component assembly effective to limit withdrawal movement of said first sealing means to a predetermined maximum distance of displacement from said first valve seat which is less than said first predetermined distance; f. whereby, when (1) the valve is mounted to a pressure vessel, (2) the pressure vessel has been filled, and (3) the limit means limit movement of withdrawal of the first sealing means, then (1) said first sealing means are adapted to be moved into and out sealing engagement with said first valve seat to control flow of pressurized fluid between the port and said one end of the bore, and (2) said second sealing means are buoyed by the pressure in the vessel out of sealing engagement with said second valve seat so long as the pressure in the vessel is substantially greater than at the port and, if the pressure at the port exceeds that of the pressure in the vessel, the second sealing means engages said second valve seat and closing the valve so that the pressure vessel cannot be recharged.
Claim 3
Dependent Claim
53 words
said sealing member responsive to pressure in the vessel greater than the pressure in the system to open to permit fluid flow between said port means when the primary seat means is not in sealing relation with said primary seat surface, F. in which the improvement resides in: G. said antirefill means comprising:
Claim 4
Dependent Claim
53 words
said sealing member responsive to pressure in the vessel greater than the pressure in the system to open to permit fluid flow between said port means when the primary seat means is not in sealing relation with said primary seat surface, F. in which the improvement resides in: G. said antirefill means comprising:
Claim 5
Dependent Claim
39 words
The valve as set forth in claim 1 wherein the other end of said stem component assembly extends out of the other end of the bore and operator means are provided to manipulate the assembly exteriorly of the housing.
Claim 6
Dependent Claim
140 words
said sealing member comprises a. a valve component having an antirefill seat engaging means companionately sized for mating relation with said antirefill seat surface; b. means intermating said valve component and said assembly; c. mutually intercooperating means on said sealing member and on the assembly to permit a range of movement of the antirefill seat-engaging means of said component a dIstance at least as great as said predetermined length of movement so that it is at all times adapted to sealingly engage the antirefill seat surface; and d. said sealing member being responsive (1) to a greater pressure in the vessel than in the supply system to be buoyed into an open position and (2) to a greater pressure in the supply system than in the vessel to seal the passageway against an inflow of fluid to recharge the vessel.
Claim 7
Dependent Claim
140 words
said sealing member comprises a. a valve component having an antirefill seat engaging means companionately sized for mating relation with said antirefill seat surface; b. means intermating said valve component and said assembly; c. mutually intercooperating means on said sealing member and on the assembly to permit a range of movement of the antirefill seat-engaging means of said component a dIstance at least as great as said predetermined length of movement so that it is at all times adapted to sealingly engage the antirefill seat surface; and d. said sealing member being responsive (1) to a greater pressure in the vessel than in the supply system to be buoyed into an open position and (2) to a greater pressure in the supply system than in the vessel to seal the passageway against an inflow of fluid to recharge the vessel.
Claim 8
Dependent Claim
110 words
operator means effective to displace said primary seat-engaging means into and out of sealing relation with the primary seat surface to regulate fluid flow between the vessel and the system; D. limit means to limit displacement of the primary seat-engaging means with respect to the primary seat surface to a predetermined length of movement; and E. antirefill means including a sealing member, 1a. responsive to a greater pressure in the system than in the vessel to seal the passageway so that the vessel cannot be recharged, 1b. said sealing member normally closing said passageway when movement of said seat-engaging means is constrained to limited displacement by said limit means; and
Claim 9
Dependent Claim
110 words
operator means effective to displace said primary seat-engaging means into and out of sealing relation with the primary seat surface to regulate fluid flow between the vessel and the system; D. limit means to limit displacement of the primary seat-engaging means with respect to the primary seat surface to a predetermined length of movement; and E. antirefill means including a sealing member, 1a. responsive to a greater pressure in the system than in the vessel to seal the passageway so that the vessel cannot be recharged, 1b. said sealing member normally closing said passageway when movement of said seat-engaging means is constrained to limited displacement by said limit means; and
Claim 10
Dependent Claim
31 words
The valve as set forth in claim 1 wherein said second mutually intercooperating means comprises a telescopic connection of said extendible portion and said one end of said valve component assembly.
Claim 11
Dependent Claim
23 words
The valve as set forth in claim 3 wherein biasing means are proVided to normally urge the extendible portion into an extended position.
Claim 12
Dependent Claim
25 words
The valve as set forth in claim 1 wherein said first mutually intercooperating means includes sealing means intermediate the stem component assembly and valve housing.
Claim 13
Dependent Claim
65 words
The valve as set forth in claim 4 wherein a flow through path is provided in the stem component assembly between the outer end of the assembly and said one end and a spring biased member is arranged in closing relation of said path and comprises a safety valve to permit escape of fluid through the path when the bias of the spring is overcome.
Claim 14
Dependent Claim
82 words
The valve as set forth in claim 1 wherein said means on the valve and in the path of movement of said valve component assembly comprises a formable flange on the housing adapted to be moved into the path of movement of the stem component assembly and stop means on the valve component assembly to engage the formable flange when it is in the path of movement to limit movement of withdrawal of the first sealing means from the first valve seat.
Claim 15
Dependent Claim
35 words
The valve as set forth in claim 1 wherein a vessel is provided in combination with said valve, said vessel having a single opening and said valve being secured in said opening in fluidtight relation.
Claim 16
Dependent Claim
31 words
The combination as set forth in claim 8 wherein shield means are provided about said valve and said valve extends out of the surface of said vessel within said shield means.
Claim 17
Dependent Claim
19 words
The combination as set forth in claim 8 wherein the valve is recessed and lies substantially within the vessel.
Claim 18
Dependent Claim
38 words
The combination as set forth in claim 10 wherein an operator means is provided to engage said assembly and to manipulate the first sealing means relative to said first valve seat to control fluid flow through said valve.
Claim 19
Dependent Claim
84 words
An improved valve for closing a single use pressurized vessel which is adapted to be connected into fluid connection with a pressure system, which includes the combination of A. a valve body having a flow through passageway with a first and a second port means adapted respectively to open into the vessel and to open into the pressure system, said port means being in spaced relation; B. a primary seat surface in the passageway intermediate the port means; C. a valve component assembly including,
Claim 20
Dependent Claim
84 words
An improved valve for closing a single use pressurized vessel which is adapted to be connected into fluid connection with a pressure system, which includes the combination of A. a valve body having a flow through passageway with a first and a second port means adapted respectively to open into the vessel and to open into the pressure system, said port means being in spaced relation; B. a primary seat surface in the passageway intermediate the port means; C. a valve component assembly including,
Claim 21
Dependent Claim
30 words
The valve as set forth in claim 12 in combination with a pressurized vessel having an opening and means to secure said valve in fluid tight relation in said opening.
Claim 22
Dependent Claim
44 words
The valve as set forth in claim 12 wherein the means intermating and said mutually intercooperating means comprise means telescopically connecting said sealing member and the assembly and including guide means to constrain the same to linear movement of displacement relative to said assembly.
References Cited (Backward Citations)
US2077210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |