US2769454A - Pressure control fittings - Google Patents

Pressure control fittings Download PDF

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Publication number
US2769454A
US2769454A US403762A US40376254A US2769454A US 2769454 A US2769454 A US 2769454A US 403762 A US403762 A US 403762A US 40376254 A US40376254 A US 40376254A US 2769454 A US2769454 A US 2769454A
Authority
US
United States
Prior art keywords
outlet
shoulder
carrier
pressure control
wafer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US403762A
Inventor
Ralph E Bletcher
Irving A Ward
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Modern Faucet Manufacturing Co
Original Assignee
Modern Faucet Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Modern Faucet Manufacturing Co filed Critical Modern Faucet Manufacturing Co
Priority to US403762A priority Critical patent/US2769454A/en
Application granted granted Critical
Publication of US2769454A publication Critical patent/US2769454A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00Control of flow
    • G05D7/01Control of flow without auxiliary power
    • G05D7/0106Control of flow without auxiliary power the sensing element being a flexible member, e.g. bellows, diaphragm, capsule
    • G05D7/012Control of flow without auxiliary power the sensing element being a flexible member, e.g. bellows, diaphragm, capsule the sensing element being deformable and acting as a valve
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/2496Self-proportioning or correlating systems
    • Y10T137/2559Self-controlled branched flow systems
    • Y10T137/265Plural outflows
    • Y10T137/2668Alternately or successively substituted outflow
    • Y10T137/268Responsive to pressure or flow interruption
    • Y10T137/2683Plural outlets control with automatic reset
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/3149Back flow prevention by vacuum breaking [e.g., anti-siphon devices]
    • Y10T137/3185Air vent in liquid flow line
    • Y10T137/3294Valved
    • Y10T137/3331With co-acting valve in liquid flow path
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/87249Multiple inlet with multiple outlet

Description

Nov. 6, 1956 R. E. BLETCHER ET AL 2,769,454

PRESSURE: CONTROL FITTINGS Filed Jan. 15, 1954 INVENTORS MAI M PRESSURE CONTROL FITTINGS Ralph E. Bletcher and Irving A. Ward, Los Angeles,

Calif assignors to Modern Faucet Mfg. Co., Los Angeles, Calif., a corporation of California Application January 13, 1954, Serial No. 403,762

3 Claims. (Cl. 137-119) This invention relates to an improved pressure control fitting and is more particularly directed to a pressure controlled fixture for selectively controlling flow of water through one of two outlets from a single inlet. The invention is an improvement over the fitting set forth in the patent to E. H. Bucknell and R. E. Bletcher No. 2,314,071, March 16, 1943.

It is an object of this invention to provide means adapted for use in a fitting having more than one outlet for controlling fiow through the outlets.

It is a further object of this invention to provide such a device wherein a back siphon from any of said outlets to the water supply is eliminated.

It is a further object of this invention to provide a pressure control fitting which will accomplish the above mentioned puiposes While eliminating flow of sand and foreign matter to one of said outlet reducing wear and consequent leakage experienced in the above identified patented device.

It is a further object of this invention to reduce the number of moving parts to reduce the possibility of the device jamming or becoming stuck.

It is a further object of this invention to produce a device which will function at a much lower water pressure.

It is still a further object of this invention to provide a device which will function in any given position such as vertical, horizontal or even inverted.

It is still a further object of this invention to construct a unit which will provide greatly increased tolerance in manufacture.

Other objects and advantages will be readily apparent from the following description,

In the drawings:

Figure 1 is a sectional view of a unit embodying this invention in the position wherein water is directed out the spout outlet.

Figure 2 is a view similar to Figure 1 with the unit in the position wherein water is directed out the spray outlet.

Figure 3 is a view similar to Figure 2 showing the elements of the unit in full.

Figure 4 is a perspective view of the unit components.

Figure 5 is a perspective view of the carrier.

Figure 6 is a further perspective view of the water.

A sink fixture 19 includes hot and cold water branches 12 and 14 having a spout outlet 16 that is open to the atmosphere, and a spray outlet 18 that is valve controlled. Fitted into the spout outlet is an internally threaded sleeve 29 having an internal flange 22 forming a shoulder between the spout outlet 16 and water supply branches.

The spray outlet branch 18 is internally threaded to receive carrier 24 which is of a smaller external diameter at its upper end than the internal diameter of sleeve at its lower extremity and said carrier terminates short of the internal flange or shoulder 22.

The upper extremity of the carrier has a chamber 26 formed therein communicating with the spray outlet through water passage 28.

nited States Patent 0 Secured between shoulder 22 and the upper extremity of the carrier 24 isa wafer 30. The wafer is formed of a metal ring 32 coated with a suitable resilient material 34. The upper surface of the wafer bears against shoulder 22 while the under surface has three resilient legs 36 which are spaced an equal distance from one another and bear against the upper extremity of the carrier 24. In this manner the water supply is always in communication with chamber 26 through the space between legs 36. Also the wafer is always in contact with shoulder 22 preventing sand and foreign particles wearing down the shoulder which would result in excessive leakage through the spout outlet when water is directed through the spray outlet.

The wafer is provided with a tapered bore 38 therethrough which receives valve head 40. The valve head 49 is on one extremity of valve stem 42 which carries piston 44 at its opposite extremity. Piston 44 has three spaced legs 46 thereon which engage wafer 30 upon upward movement of the piston.

In operation when the spray outlet is opened water flow through chamber 26 creates a pressure difierential on the piston 44 lowering same in the chamber. This engages valve head 40 with the tapered bore or valve seat 38 in water 30 shutting oif flow to the spout outlet.

When flow is terminated through said spring outlet the pressure diiferential raises piston 44 and thereby unseats valve head 40, permitting flow through the spout outlet.

When flow is terminated through either outlet the valve head seats preventing back siphonage from the spout outlet. If a back siphonage should be formed in the spray outlet the piston 44 would raise, unseating valve head 40 venting chamber 26 through the spout outlet and breaking the siphon.

While what hereinbefore has been described is the preferred embodiment of this invention, it is readily apparent that alterations and modifications can be restored to without departing from the scope of this invention, and such alterations and modifications are intended to be included within the scope of the appended claims.

We claim:

1. A pressure control fitting for use in a chamber having a pair of opposed outlets and an inlet comprising: a shoulder formed in the first outlet, a carrier projecting from the second outlet and terminating short of said shoulder, a wafer having a surface bearing against said shoulder and spaced legs engaging the upper extremity of said carrier whereby flow is permitted from outside said carrier to the interior thereof, means forming a bore in said wafer communicating said first and second outlets and valve means responsive to flow through said second outlet for closing off said bore.

2. A pressure control fitting for use in a chamber having a pair of opposed outlets and an inlet comprising: a shoulder formed in the first outlet, a carrier projecting from the second outlet and terminating short of said shoulder, a wafer having a surface bearing against said shoulder and resilient spaced legs engaging the upper extremity of said carrier whereby flow is permitted from outside said carrier to the interior thereof, means forming a bore in said wafer communicating said first and second outlets and valve means responsive to flow through said second outlet for closing off said bore.

3. A pressure control fitting for use in a chamber having a pair of opposed outlets and an inlet comprising: a shoulder formed in the first outlet, a carrier projecting from the second outlet and terminating short of said shoulder, a wafer having a resilient surface bearing against said shoulder and resilient spaced legs engaging the upper extremity of said carrier whereby flow is permitted from outside said carrier to the interior thereof, means forming a bore in said wafer communicating said first and second outlets ahd valve means responsive to flow through said second outlet for closing 'ofl said bore.

References Cited in the file of this patent 4 Gagg Nov. 3, 1936 Anderson Oct. 21, 1941 Bucknell Mar. 16, 1943 Bletcher Mar. 4, 1952

US403762A 1954-01-13 1954-01-13 Pressure control fittings Expired - Lifetime US2769454A (en)

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Application Number Priority Date Filing Date Title
US403762A US2769454A (en) 1954-01-13 1954-01-13 Pressure control fittings

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US403762A US2769454A (en) 1954-01-13 1954-01-13 Pressure control fittings

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US2769454A true US2769454A (en) 1956-11-06

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Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2893416A (en) * 1956-08-20 1959-07-07 Hanson Equipment Company Pressure responsive reversing valve
US2894695A (en) * 1955-08-16 1959-07-14 Bletcher Ralph Edwin Spout fitting
US2949933A (en) * 1957-01-07 1960-08-23 Alfred M Moen Valve structure
US3059898A (en) * 1959-11-27 1962-10-23 Acf Ind Inc Carburetor float valve structure
US3336935A (en) * 1964-07-28 1967-08-22 James Hamilton Bletcher Diverter
US3346486A (en) * 1964-04-08 1967-10-10 Technicon Corp Apparatus and method for introduction of amino acid samples into a chromatography column
US4079744A (en) * 1976-07-21 1978-03-21 Parker-Hannifin Corporation Drain valve
US4280655A (en) * 1979-01-17 1981-07-28 Standard-Thomson Corporation Automotive thermostatic valve
US4577653A (en) * 1983-06-30 1986-03-25 Masco Corporation Anti-siphon and anti-knock diverter valve
US4603838A (en) * 1984-08-13 1986-08-05 Grundy (Teddington) Limited Ball valve seat
US4798221A (en) * 1987-07-27 1989-01-17 Masco Corporation Of Indiana Self sealing anti-knock diverter valve
USRE32981E (en) * 1983-06-30 1989-07-11 Masco Corporation Anti-siphon and anti-knock diverter valve
US5454631A (en) * 1993-10-12 1995-10-03 General Motors Corporation Poppet assembly for a traction control modulator
US5944358A (en) * 1997-11-26 1999-08-31 Emhart Inc. Reversible ejector tee
US6062249A (en) * 1998-12-14 2000-05-16 Moen Incorporated Faucet side spray diverter
EP0911555A3 (en) * 1997-10-14 2000-09-27 Hoke Incorporated Seal assembly
US6341617B1 (en) * 2000-04-06 2002-01-29 Barber Wilsons & Company Limited Taps
US20040011399A1 (en) * 2002-07-17 2004-01-22 Segien Donald J. Side control faucet with diverter assembly
US20090044949A1 (en) * 2007-08-13 2009-02-19 King James G Deformable ball seat
US20090044955A1 (en) * 2007-08-13 2009-02-19 King James G Reusable ball seat having ball support member
US20090044946A1 (en) * 2007-08-13 2009-02-19 Thomas Schasteen Ball seat having fluid activated ball support
US20090044948A1 (en) * 2007-08-13 2009-02-19 Avant Marcus A Ball seat having ball support member
US20100282338A1 (en) * 2009-05-07 2010-11-11 Baker Hughes Incorporated Selectively movable seat arrangement and method
US20100294514A1 (en) * 2009-05-22 2010-11-25 Baker Hughes Incorporated Selective plug and method
US20100294515A1 (en) * 2009-05-22 2010-11-25 Baker Hughes Incorporated Selective plug and method
US20100314126A1 (en) * 2009-06-10 2010-12-16 Baker Hughes Incorporated Seat apparatus and method
US20110011597A1 (en) * 2009-07-15 2011-01-20 Baker Hughes Incorporated Tubular valve system and method
US20110030975A1 (en) * 2009-08-04 2011-02-10 Baker Hughes Incorporated Tubular system with selectively engagable sleeves and method
US20110030976A1 (en) * 2009-08-10 2011-02-10 Baker Hughes Incorporated Tubular actuator, system and method
US20110030968A1 (en) * 2009-08-10 2011-02-10 Baker Hughes Incorporated Tubular actuator, system and method
US20110036592A1 (en) * 2009-08-13 2011-02-17 Baker Hughes Incorporated Tubular valving system and method
US20110061856A1 (en) * 2009-09-11 2011-03-17 Baker Hughes Incorporated Tubular seat and tubular actuating system
US20110067888A1 (en) * 2009-09-22 2011-03-24 Baker Hughes Incorporated Plug counter and method
US20110073321A1 (en) * 2009-09-25 2011-03-31 Baker Hughes Incorporated Tubular actuator and method
US20110073320A1 (en) * 2009-09-25 2011-03-31 Baker Hughes Incorporated Tubular actuator and method
US20110100647A1 (en) * 2009-10-29 2011-05-05 Baker Hughes Incorporated Tubular Actuator, System and Method
US8479808B2 (en) 2011-06-01 2013-07-09 Baker Hughes Incorporated Downhole tools having radially expandable seat member
US8668018B2 (en) 2011-03-10 2014-03-11 Baker Hughes Incorporated Selective dart system for actuating downhole tools and methods of using same
US8668013B2 (en) 2010-08-24 2014-03-11 Baker Hughes Incorporated Plug counter, fracing system and method
US8668006B2 (en) 2011-04-13 2014-03-11 Baker Hughes Incorporated Ball seat having ball support member
US9004091B2 (en) 2011-12-08 2015-04-14 Baker Hughes Incorporated Shape-memory apparatuses for restricting fluid flow through a conduit and methods of using same
US9016388B2 (en) 2012-02-03 2015-04-28 Baker Hughes Incorporated Wiper plug elements and methods of stimulating a wellbore environment
US9145758B2 (en) 2011-06-09 2015-09-29 Baker Hughes Incorporated Sleeved ball seat

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1203766A (en) * 1913-09-06 1916-11-07 George O Miller Valve.
US2059687A (en) * 1935-01-29 1936-11-03 Wright Aeronautical Corp Deicing throttle
US2259984A (en) * 1940-01-31 1941-10-21 Dwight M Anderson Vacuum breaking valve
US2314071A (en) * 1941-09-19 1943-03-16 Modern Faucet Co Pressure control fitting
US2587960A (en) * 1947-10-06 1952-03-04 Modern Faucet Mfg Co Transfer valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1203766A (en) * 1913-09-06 1916-11-07 George O Miller Valve.
US2059687A (en) * 1935-01-29 1936-11-03 Wright Aeronautical Corp Deicing throttle
US2259984A (en) * 1940-01-31 1941-10-21 Dwight M Anderson Vacuum breaking valve
US2314071A (en) * 1941-09-19 1943-03-16 Modern Faucet Co Pressure control fitting
US2587960A (en) * 1947-10-06 1952-03-04 Modern Faucet Mfg Co Transfer valve

Cited By (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2894695A (en) * 1955-08-16 1959-07-14 Bletcher Ralph Edwin Spout fitting
US2893416A (en) * 1956-08-20 1959-07-07 Hanson Equipment Company Pressure responsive reversing valve
US2949933A (en) * 1957-01-07 1960-08-23 Alfred M Moen Valve structure
US3059898A (en) * 1959-11-27 1962-10-23 Acf Ind Inc Carburetor float valve structure
US3346486A (en) * 1964-04-08 1967-10-10 Technicon Corp Apparatus and method for introduction of amino acid samples into a chromatography column
US3336935A (en) * 1964-07-28 1967-08-22 James Hamilton Bletcher Diverter
US4079744A (en) * 1976-07-21 1978-03-21 Parker-Hannifin Corporation Drain valve
US4280655A (en) * 1979-01-17 1981-07-28 Standard-Thomson Corporation Automotive thermostatic valve
USRE32981E (en) * 1983-06-30 1989-07-11 Masco Corporation Anti-siphon and anti-knock diverter valve
US4577653A (en) * 1983-06-30 1986-03-25 Masco Corporation Anti-siphon and anti-knock diverter valve
US4603838A (en) * 1984-08-13 1986-08-05 Grundy (Teddington) Limited Ball valve seat
US4798221A (en) * 1987-07-27 1989-01-17 Masco Corporation Of Indiana Self sealing anti-knock diverter valve
US5454631A (en) * 1993-10-12 1995-10-03 General Motors Corporation Poppet assembly for a traction control modulator
EP0911555A3 (en) * 1997-10-14 2000-09-27 Hoke Incorporated Seal assembly
US5944358A (en) * 1997-11-26 1999-08-31 Emhart Inc. Reversible ejector tee
US6062249A (en) * 1998-12-14 2000-05-16 Moen Incorporated Faucet side spray diverter
US6341617B1 (en) * 2000-04-06 2002-01-29 Barber Wilsons & Company Limited Taps
US20040011399A1 (en) * 2002-07-17 2004-01-22 Segien Donald J. Side control faucet with diverter assembly
US7077153B2 (en) 2002-07-17 2006-07-18 Newfrey Llc Side control faucet with diverter assembly
US20090044948A1 (en) * 2007-08-13 2009-02-19 Avant Marcus A Ball seat having ball support member
US20090044955A1 (en) * 2007-08-13 2009-02-19 King James G Reusable ball seat having ball support member
US20090044946A1 (en) * 2007-08-13 2009-02-19 Thomas Schasteen Ball seat having fluid activated ball support
US20090044949A1 (en) * 2007-08-13 2009-02-19 King James G Deformable ball seat
US7503392B2 (en) * 2007-08-13 2009-03-17 Baker Hughes Incorporated Deformable ball seat
US7628210B2 (en) 2007-08-13 2009-12-08 Baker Hughes Incorporated Ball seat having ball support member
US7637323B2 (en) 2007-08-13 2009-12-29 Baker Hughes Incorporated Ball seat having fluid activated ball support
US7673677B2 (en) 2007-08-13 2010-03-09 Baker Hughes Incorporated Reusable ball seat having ball support member
US20100282338A1 (en) * 2009-05-07 2010-11-11 Baker Hughes Incorporated Selectively movable seat arrangement and method
US9038656B2 (en) 2009-05-07 2015-05-26 Baker Hughes Incorporated Restriction engaging system
US8261761B2 (en) 2009-05-07 2012-09-11 Baker Hughes Incorporated Selectively movable seat arrangement and method
US20100294515A1 (en) * 2009-05-22 2010-11-25 Baker Hughes Incorporated Selective plug and method
US20100294514A1 (en) * 2009-05-22 2010-11-25 Baker Hughes Incorporated Selective plug and method
US20100314126A1 (en) * 2009-06-10 2010-12-16 Baker Hughes Incorporated Seat apparatus and method
US9316089B2 (en) 2009-06-10 2016-04-19 Baker Hughes Incorporated Seat apparatus and method
US20110011597A1 (en) * 2009-07-15 2011-01-20 Baker Hughes Incorporated Tubular valve system and method
US8272445B2 (en) 2009-07-15 2012-09-25 Baker Hughes Incorporated Tubular valve system and method
US8251154B2 (en) 2009-08-04 2012-08-28 Baker Hughes Incorporated Tubular system with selectively engagable sleeves and method
US20110030975A1 (en) * 2009-08-04 2011-02-10 Baker Hughes Incorporated Tubular system with selectively engagable sleeves and method
US8291988B2 (en) 2009-08-10 2012-10-23 Baker Hughes Incorporated Tubular actuator, system and method
US20110030976A1 (en) * 2009-08-10 2011-02-10 Baker Hughes Incorporated Tubular actuator, system and method
US20110030968A1 (en) * 2009-08-10 2011-02-10 Baker Hughes Incorporated Tubular actuator, system and method
US8397823B2 (en) 2009-08-10 2013-03-19 Baker Hughes Incorporated Tubular actuator, system and method
US8291980B2 (en) 2009-08-13 2012-10-23 Baker Hughes Incorporated Tubular valving system and method
US20110036592A1 (en) * 2009-08-13 2011-02-17 Baker Hughes Incorporated Tubular valving system and method
US20110061856A1 (en) * 2009-09-11 2011-03-17 Baker Hughes Incorporated Tubular seat and tubular actuating system
US8365829B2 (en) 2009-09-11 2013-02-05 Baker Hughes Incorporated Tubular seat and tubular actuating system
US9279302B2 (en) 2009-09-22 2016-03-08 Baker Hughes Incorporated Plug counter and downhole tool
US20110067888A1 (en) * 2009-09-22 2011-03-24 Baker Hughes Incorporated Plug counter and method
US8479823B2 (en) 2009-09-22 2013-07-09 Baker Hughes Incorporated Plug counter and method
US8316951B2 (en) 2009-09-25 2012-11-27 Baker Hughes Incorporated Tubular actuator and method
US20110073320A1 (en) * 2009-09-25 2011-03-31 Baker Hughes Incorporated Tubular actuator and method
US20110073321A1 (en) * 2009-09-25 2011-03-31 Baker Hughes Incorporated Tubular actuator and method
US8418769B2 (en) 2009-09-25 2013-04-16 Baker Hughes Incorporated Tubular actuator and method
US8646531B2 (en) 2009-10-29 2014-02-11 Baker Hughes Incorporated Tubular actuator, system and method
US20110100647A1 (en) * 2009-10-29 2011-05-05 Baker Hughes Incorporated Tubular Actuator, System and Method
US8668013B2 (en) 2010-08-24 2014-03-11 Baker Hughes Incorporated Plug counter, fracing system and method
US9188235B2 (en) 2010-08-24 2015-11-17 Baker Hughes Incorporated Plug counter, fracing system and method
US8789600B2 (en) 2010-08-24 2014-07-29 Baker Hughes Incorporated Fracing system and method
US8668018B2 (en) 2011-03-10 2014-03-11 Baker Hughes Incorporated Selective dart system for actuating downhole tools and methods of using same
US8668006B2 (en) 2011-04-13 2014-03-11 Baker Hughes Incorporated Ball seat having ball support member
US8479808B2 (en) 2011-06-01 2013-07-09 Baker Hughes Incorporated Downhole tools having radially expandable seat member
US9145758B2 (en) 2011-06-09 2015-09-29 Baker Hughes Incorporated Sleeved ball seat
US9004091B2 (en) 2011-12-08 2015-04-14 Baker Hughes Incorporated Shape-memory apparatuses for restricting fluid flow through a conduit and methods of using same
USRE46793E1 (en) 2012-02-03 2018-04-17 Baker Hughes, A Ge Company, Llc Wiper plug elements and methods of stimulating a wellbore environment
US9016388B2 (en) 2012-02-03 2015-04-28 Baker Hughes Incorporated Wiper plug elements and methods of stimulating a wellbore environment

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