US3741692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surge suppressor for fluid lines
Assignee: HOUDAILLE WARREN RUPP Inc
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Filing: 1970-12-17
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Granted: 1973-06-26
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Expires: 1990-12-17
Abstract
Abstract A surge suppressor for use with outlet conduits of pumps, such as air-operated diaphragm pumps, having a pulsating output and other fluid conduits that are subject to surges or shock pressures. The apparatus embodies a diaphragm, one side of which is subjected to the pressure of the fluid in the conduit and the other side of which is subjected to the pressure of air within a chamber. Means are provided for automatically compensating for changes in the fluid pressure in the conduit by supplying air to the chamber if the pressure in the conduit increases and automatically bleeding air from the chamber if the pressure decreases, thus maintaining a substantially constant volume of air in the chamber even though the pressure in the conduit to which the device is attached may vary.
Inventors
- 👤 W Rupp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:23
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/04; F16L55/045; F16L55/05; F16L55/052; F16L55/053
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
201 words
A surge suppressor for liquid system comprising a liquid chamber adapted to be connected to the system and subjected to the pressure of the liquid therein, a gas chamber and a movable dividing member separating the liquid chamber from the gas chamber, said dividing member having one part subjected to the pressure in the liquid chamber and another part subjected to the pressure in the gas chamber, the said dividing member being movable in response to changes in pressure in the liquid chamber, an inlet valve for said gas chamber, said inlet valve being connected to a source of gas under pressure and being adapted when open to admit gas to said gas chamber, an outlet valve for said gas chamber adapted when open to discharge gas from said gas chamber, and means operated by said dividing member for opening said inlet valve and admitting gas into said gas chamber only during such time as said dividing member is displaced beyond a predetermined point in one direction and for opening said outlet valve to permit the discharge of gas from said gas chamber only during such time as said dividing member is displaced beyond a predetermined point in the opposite direction.
Claim 2
Dependent Claim
201 words
A surge suppressor for liquid system comprising a liquid chamber adapted to be connected to the system and subjected to the pressure of the liquid therein, a gas chamber and a movable dividing member separating the liquid chamber from the gas chamber, said dividing member having one part subjected to the pressure in the liquid chamber and another part subjected to the pressure in the gas chamber, the said dividing member being movable in response to changes in pressure in the liquid chamber, an inlet valve for said gas chamber, said inlet valve being connected to a source of gas under pressure and being adapted when open to admit gas to said gas chamber, an outlet valve for said gas chamber adapted when open to discharge gas from said gas chamber, and means operated by said dividing member for opening said inlet valve and admitting gas into said gas chamber only during such time as said dividing member is displaced beyond a predetermined point in one direction and for opening said outlet valve to permit the discharge of gas from said gas chamber only during such time as said dividing member is displaced beyond a predetermined point in the opposite direction.
Claim 3
Dependent Claim
36 words
A surge suppressor according to claim 1 wherein the volume of said gas chamber is several times the volume displaced by said dividing member in its movement from one of said predetermined points to the other.
Claim 4
Dependent Claim
186 words
A surge suppressor for use in connection with fluid conduits comprising a liquid chamber housing open at one end and providing a liquid chamber, means for connecting the liquid chamber to a liquid system subject to surges or pulses, a gas chamber housing open at one end and providing a gas chamber, a diaphragm clamped between the open ends of said housings and separating said liquid chamber from said gas chamber, an inlet valve for said gas chamber, said inlet valve being connected to a source of gas under pressure and being adapted when open to admit gas to said gas chamber, an outlet valve for said gas chamber adapted when open to discharge gas from said gas chamber and means operated by said diaphragm for opening said inlet valve and admitting gas into said gas chamber only during such time as said diaphragm is displaced beyond a predetermined point in one direction and for opening said outlet valve to permit the discharge of gas from said gas chamber only during such time as said diaphragm is displaced beyond a predetermined point in the opposite direction.
Claim 5
Dependent Claim
186 words
A surge suppressor for use in connection with fluid conduits comprising a liquid chamber housing open at one end and providing a liquid chamber, means for connecting the liquid chamber to a liquid system subject to surges or pulses, a gas chamber housing open at one end and providing a gas chamber, a diaphragm clamped between the open ends of said housings and separating said liquid chamber from said gas chamber, an inlet valve for said gas chamber, said inlet valve being connected to a source of gas under pressure and being adapted when open to admit gas to said gas chamber, an outlet valve for said gas chamber adapted when open to discharge gas from said gas chamber and means operated by said diaphragm for opening said inlet valve and admitting gas into said gas chamber only during such time as said diaphragm is displaced beyond a predetermined point in one direction and for opening said outlet valve to permit the discharge of gas from said gas chamber only during such time as said diaphragm is displaced beyond a predetermined point in the opposite direction.
Claim 6
Dependent Claim
25 words
A surge suppressor according to claim 3 wherein said inlet valve and said outlet valve are normally closed and are opened by said operating means.
Claim 7
Dependent Claim
27 words
A surge suppressor according to claim 3 wherein said inlet and outlet valves are opened by means including a rod secured to and reciprocated by said diaphragm.
Claim 8
Dependent Claim
40 words
A surge suppressor according to claim 3 wherein the liquid chamber housing and the gas chamber housing are shaped adjacent the diaphragm to provide conoidal surfaces to engage the diaphragm and prevent undue displacement of the diaphragm in either direction.
Claim 9
Dependent Claim
41 words
A surge suppressor according to claim 5 wherein the gas chamber is provided with a closure member for closing the end of the gas chamber opposite said diaphragm and the inl t and outlet valves are mounted in the closure member.
Claim 10
Dependent Claim
57 words
A surge suppressor according to claim 7 wherein the inlet valve is a poppet valve having a valve stem projecting within the gas chamber towArd the diaphragm, said valve being openable by movement of the valve stem away from the diaphragm, said valve having means externally of said chamber for connection to a supply of compressed gas.
Claim 11
Dependent Claim
74 words
A surge suppressor according to claim 8 having an outlet valve also mounted in said closure member, said outlet valve being a poppet valve having a valve stem projecting externally of said gas chamber in a direction away from said diaphragm, said valve being openable by movement of the valve stem toward the diaphragm, said valve having a port permitting discharge of gas to the exterior of said chamber when said valve is opened.
Claim 12
Dependent Claim
118 words
A surge suppressor according to claim 9 having an actuating rod attached to said diaphragm and projecting to the exterior of said chamber, there being means in said closure member to seal against leakage of air where said actuating rod extends through said closure member, said actuating rod carrying an actuating plate within the air chamber and engageable with the valve stem of the inlet valve to open the same when the diaphragm moves toward the air chamber more than a predetermined amount and an operating plate disposed on the exterior of said chamber and adapted to engage the valve stem of the discharge valve when the diaphragm moves toward said liquid chamber more than a predetermined amount.
Claim 13
Dependent Claim
50 words
Apparatus according to claim 3 wherein the liquid system comprises an air-operated diaphragm type pump having an inlet conduit and a discharge conduit, the pump being connected to a source of compressed air and the liquid chamber of the surge suppressor being connected to the discharge conduit of the pump.
Claim 14
Dependent Claim
22 words
The combination according to claim 3 wherein the pump and the surge suppressor are connected to the same source of compressed air.
Claim 15
Dependent Claim
16 words
The combination according to claim 12 wherein the diaphragms are of the same size and type.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |