US20120210868A1 - Packing assembly for a pump - Google Patents
Packing assembly for a pump Download PDFInfo
- Publication number
- US20120210868A1 US20120210868A1 US13/440,585 US201213440585A US2012210868A1 US 20120210868 A1 US20120210868 A1 US 20120210868A1 US 201213440585 A US201213440585 A US 201213440585A US 2012210868 A1 US2012210868 A1 US 2012210868A1
- Authority
- US
- United States
- Prior art keywords
- elastomeric material
- ring
- plunger
- header ring
- header
- 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.)
- Abandoned
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/166—Sealings between relatively-moving surfaces with means to prevent the extrusion of the packing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
- F16J15/20—Packing materials therefor
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49236—Fluid pump or compressor making
Definitions
- the present invention relates to a packing or seal assembly for a pump and more particularly to a header ring for use in such an assembly.
- Piston pumps or plunger pumps are positive displacement pumps and are commonly used in environments where the fluids which are being handled pose problems such as high temperatures, viscous and very viscous media or solids-charged liquids.
- plunger pumps are in the oil and gas industry and particularly in the drilling, completion and/or stimulation of oil or gas wells.
- solids laden drilling fluids e.g., muds, cement slurries, fracturing slurries, acids and the like
- This is particularly true in the case of completion and/or stimulation procedures where very high pressures are employed and the fluids being handled are typically slurries which make the fluids highly abrasive because of the large solids content of the slurries.
- a typical seal arrangement comprises one or more V-shaped or Chevron packing rings with various male and female adaptor rings at the forward and rearward ends of the packing assembly.
- the sealing assembly can be placed under compression by an adjusting ring, spring loading, etc.
- a typical packing assembly of the type under discussion includes a header ring which is typically made of an elastomeric material.
- the header ring can be constructed of a homogeneous elastomeric material or an elastomeric material containing layers of cloth or other reinforcing type materials. It is also known to cover certain surfaces of the header ring, particularly the so-called rearward surfaces with a reinforcing fabric.
- FIG. 1 depicts a typical homogeneous elastomeric header ring shown as 10 .
- header ring 10 is made of a homogeneous elastomeric material and comprises an annular body portion 12 .
- Header ring 10 includes a forwardly facing, annularly extending planar surface 20 , an annularly extending, radially outwardly facing cylindrical surface 22 , an annularly extending, radially inwardly facing cylindrical surface 24 and a radially inwardly facing convex sealing surface 26 , surfaces 24 and 26 being adjoined at an annularly extending juncture 28 .
- the header ring 10 is shown after use and after a portion of the header ring has been nibbled out.
- the nibbled out area indicated at 30 comprises a portion of header ring 10 formed by intersecting surfaces 24 and 26 . More specifically, it can be seen that the juncture 28 shown in FIG. 1 between surfaces 24 and 26 has been gouged out due to the nibbling effect.
- FIGS. 3 and 4 depict another prior art header ring, FIG. 3 depicting the header ring in its original or undamaged state, FIG. 4 depicting the header ring of FIG. 3 following use and damage as a result of nibbling.
- the header ring 10 A shown in FIG. 3 has a body portion 32 comprised of first body section 34 and second body section 36 .
- Section 36 of body portion 32 comprises a fabric or fiber reinforced material while portion 34 is formed of a homogeneous elastomeric material construction.
- FIG. 4 shows the header ring 10 A of FIG. 3 which has been damaged due to nibbling and once again the nibbling has occurred at the juncture 46 between radially inwardly facing cylindrical wall 43 and radially inwardly facing surface 45 .
- the present invention provides a header ring for use in a packing or seal assembly between a reciprocating, cylindrical member and a cylindrical wall of a housing in which the cylindrical member reciprocates.
- the header ring of the present invention has an annularly extending body portion, at least a portion of which comprises an elastomeric material, an annular pedestal portion formed on said body and having an annular, radially inwardly facing pedestal surface, a radially inwardly facing, annularly extending sealing lip formed on said body and having a radially inwardly facing sealing surface, at least a portion of the pedestal portion forming the pedestal surface and at least a portion of the sealing lip forming at least a portion of the sealing surface being comprised of a layer of fabric reinforced elastomeric material.
- a sealing assembly for sealing between a cylindrical movable member and a housing having a cylindrical bore in which the cylindrical member reciprocates, the sealing assembly including a header ring as described above.
- FIG. 1 is a cross-sectional view of a prior art header ring prior to installation.
- FIG. 2 is a cross-sectional view of the header ring of FIG. 1 which has been damaged by nibbling.
- FIG. 3 is a cross-sectional view of another type of prior art header ring prior to installation.
- FIG. 4 is a cross-sectional view of the header ring of FIG. 3 which has been damaged by nibbling.
- FIG. 5 is a cross-sectional view of one embodiment of the header ring of the present invention.
- FIG. 6 is a cross-sectional view of another embodiment of the header ring of the present invention.
- FIG. 7 is a cross-sectional view of another embodiment of the header ring of the present invention.
- FIG. 8 is a schematic view, partly in section, of a sealing assembly according to the present invention in the stuffing box of a plunger pump.
- FIG. 9 is an enlarged view of the circled portion of the header ring shown in FIG. 8 .
- the header ring 50 comprises an annular body portion 52 , an annular axially extending pedestal 53 , an annular, axially extending bead 56 , distal the pedestal 53 , and a radially inwardly facing, annularly extending sealing lip 58 .
- body 52 , bead 56 , pedestal 53 and sealing lip 58 are integrally formed, for the most part, of a homogeneous, elastomeric material.
- a portion 60 of the pedestal 53 forming the radially inwardly facing cylindrical surface 61 and the portion 62 of the sealing lip 58 forming a portion of sealing surface 64 is comprised of a layer of reinforced, elastomeric material, bonded to the homogeneous elastomeric material of the remainder of header ring 50 .
- the portions 60 and 62 extend over the juncture 63 of surfaces 61 and 64 .
- the fabric reinforced sections 60 and 62 when adjoined, are generally L-shaped when viewed in transverse cross-section.
- FIG. 6 shows another embodiment of the present invention wherein the header ring 68 has an annular body portion 70 which is primarily made of a homogeneous elastomeric material.
- the header ring 68 has an annular, radially outwardly facing cylindrical surface 72 .
- Bonded to the homogeneous elastomeric portion of body 70 is an annular layer 74 of a fabric reinforced elastomer, the layer 74 covering the surfaces of the pedestal 76 , the sealing lip 78 , the bead 80 and portions of the forward and rearward portions of the body 70 forming surface 72 .
- the portions of the pedestal 76 and sealing lip 78 forming juncture 82 between the pedestal 76 and the sealing lip 78 is formed of a layer of fabric reinforced elastomeric material forming adjoining surfaces 82 A and 82 B.
- FIG. 7 there is shown another embodiment of the present invention, wherein the header ring, shown generally as 88 , has a body 89 , the core 90 of which is comprised of an elastomeric material, a portion of annular pedestal 92 and a portion of annular sealing lip 94 .
- the reinforced fabric layer 96 completely encapsulates or surrounds the core 90 of body portion 89 .
- FIG. 8 depicts a typical sealing assembly 101 for use in a stuffing box, shown generally as 100 , of a plunger-type pump employing a header ring of the present invention.
- Stuffing box 100 comprises a housing 102 having a bore 104 extending therethrough, bore 104 defining a cylindrical surface 103 .
- Housing 102 also has a shoulder portion 108 .
- Movably, e.g., reciprocally, positioned in bore 104 is a plunger, piston or shaft 106 .
- Sealing assembly 101 comprises an annular gland 105 , an annular header ring 110 , an-annular, first seal ring 112 , and an annular, second seal ring 114 .
- the sealing assembly 101 also includes a top, annular adaptor ring 116 and an annular bushing 118 .
- header ring 110 forms a wiper ring at the high pressure end of the sealing assembly 101 , its primary function being to prevent abrasives/solids from entering the region where the seal rings 112 and 114 are positioned and thereby prevent excessive wear on seal rings 112 and 114 . It is also to be noted that, as shown in FIG. 8 , header ring 110 no longer has the shape shown in, for example, FIG.
- header ring 110 is constructed essentially the same as the header ring shown in FIG. 5 having a generally L-shaped, annularly extending reinforcing section or layer 120 that bridges the juncture 122 between the surface of sealing lip 124 and the surface of pedestal 126 .
- packing assembly 101 has been shown as containing two seal rings of the chevron or V-shaped type, it will be appreciated that depending upon the use to which the plunger pump is subjected, fewer or more sealing rings can be employed. It will also be seen that the annular bead 119 of header ring 110 is nested in the annularly extending, axially facing groove in seal ring 112 so as to anchor seal ring 112 to the header ring 110 . It will be appreciated that the seal rings 112 and 114 can be constructed of various materials and have various shapes, the only provision being that they have sufficient resiliency to effect sealing between the housing 102 and plunger 106 . Generally speaking, components such as annular bushing 118 , top adaptor 116 , and annular gland 105 are made of a metallic material, e.g., brass.
- the packing assembly 101 can be energized by header ring 110 and can be made to be adjustable by techniques well known in the art. If, however the packing assembly 101 is preloaded, care must be taken to ensure that the correct amount of preload is employed to prevent movement of the sealing assembly in the housing or stuffing box to prevent excessive wear on the sealing assembly. In this regard, if there is too little preload the packing will move in the housing wearing both the ID and OD of the seal rings as well as the header ring causing premature wear and in extreme cases causing wear in the stuffing box resulting in expensive repair or refurbishment. On the other hand, if the packing assembly is adjusted with too little preload, high friction forces cause accelerated wear of the header ring and the seal rings with premature failure.
- the homogeneous elastomeric core of the header ring of the present invention can be made from a number of different natural or synthetic rubbers as, for example, nitrile or butadiene rubber, with a desired degree of hardness again depending upon the use to which the plunger pump is exposed.
- the elastomeric portions of the seal rings 112 and 114 can be of various rubbers with desirable hardness.
- the seal rings, e.g., seal rings 112 and 114 can be reinforced with fabric, can be homogeneous elastomeric materials, can have anti-extrusion portions, etc.
- Sections 61 and 62 forming an anti-nibbling section are generally a fabric reinforced rubber, synthetic or natural.
- fabric as used with respect to the anti-nibbling wear section of the various embodiments of the present invention is used in the broadest sense and includes any cloth or cloth-like structure made by any technique such as knitting, weaving or felting of fibers of natural or synthetic materials as well as mixed fibers and includes, without limitation, fibers of cotton, nylon, polyester, polyester blends, aramid fibers, fiberglass fibers or any combination thereof.
Abstract
Description
- This application is a Continuation of U.S. patent application Ser. No. 12/347,207, filed Dec. 31, 2008, which claims the priority of U.S. Provisional Application No. 61/018,538 filed on Jan. 2, 2008, the disclosures of which are incorporated herein by reference for all purposes.
- 1. Field of the Invention
- The present invention relates to a packing or seal assembly for a pump and more particularly to a header ring for use in such an assembly.
- 2. Description of Prior Art
- Piston pumps or plunger pumps are positive displacement pumps and are commonly used in environments where the fluids which are being handled pose problems such as high temperatures, viscous and very viscous media or solids-charged liquids.
- One important use of plunger pumps is in the oil and gas industry and particularly in the drilling, completion and/or stimulation of oil or gas wells. In these applications, it is common to employ solids laden drilling fluids, e.g., muds, cement slurries, fracturing slurries, acids and the like, which frequently must be pumped under high pressure into the well. This is particularly true in the case of completion and/or stimulation procedures where very high pressures are employed and the fluids being handled are typically slurries which make the fluids highly abrasive because of the large solids content of the slurries.
- As is well known in the art, positive displacement reciprocating plunger-type pumps in this environment pose difficult sealing problems at the high pressure end where the abrasive fluid must be prevented from leaking between the reciprocating plunger and the cylinder or housing within which it reciprocates.
- Although a variety of sealing or packing systems are known to seal between the reciprocating plunger and the cylinder, a typical seal arrangement comprises one or more V-shaped or Chevron packing rings with various male and female adaptor rings at the forward and rearward ends of the packing assembly. To ensure sealing between the plunger and the cylinder, the sealing assembly can be placed under compression by an adjusting ring, spring loading, etc.
- A typical packing assembly of the type under discussion includes a header ring which is typically made of an elastomeric material. The header ring can be constructed of a homogeneous elastomeric material or an elastomeric material containing layers of cloth or other reinforcing type materials. It is also known to cover certain surfaces of the header ring, particularly the so-called rearward surfaces with a reinforcing fabric.
- It has been found that, with respect to the header ring, failure of the sealing assembly primarily occurs due to a phenomena known as “nibbling.” This nibbling phenomenon can be best understood by reference to
FIGS. 1-4 which depict prior art construction for header rings of the type under consideration.FIG. 1 depicts a typical homogeneous elastomeric header ring shown as 10. As can be seen inFIG. 1 ,header ring 10 is made of a homogeneous elastomeric material and comprises anannular body portion 12. - Integrally formed with
body 12, is an annular, radially inwardly projectingwiping lip 14, an annularly extending, axially facingbead 16, anannular pedestal portion 18.Header ring 10 includes a forwardly facing, annularly extendingplanar surface 20, an annularly extending, radially outwardly facingcylindrical surface 22, an annularly extending, radially inwardly facingcylindrical surface 24 and a radially inwardly facingconvex sealing surface 26,surfaces juncture 28. - Referring now to
FIG. 2 , theheader ring 10 is shown after use and after a portion of the header ring has been nibbled out. As can be seen, the nibbled out area indicated at 30 comprises a portion ofheader ring 10 formed by intersectingsurfaces juncture 28 shown inFIG. 1 betweensurfaces -
FIGS. 3 and 4 depict another prior art header ring,FIG. 3 depicting the header ring in its original or undamaged state,FIG. 4 depicting the header ring ofFIG. 3 following use and damage as a result of nibbling. Theheader ring 10A shown inFIG. 3 has abody portion 32 comprised offirst body section 34 andsecond body section 36.Section 36 ofbody portion 32 comprises a fabric or fiber reinforced material whileportion 34 is formed of a homogeneous elastomeric material construction. As in the case ofheader ring 10, there is anannular pedestal 38, anannular bead 40 and anannular sealing lip 42.FIG. 4 shows theheader ring 10A ofFIG. 3 which has been damaged due to nibbling and once again the nibbling has occurred at thejuncture 46 between radially inwardly facingcylindrical wall 43 and radially inwardly facingsurface 45. - In one aspect, the present invention provides a header ring for use in a packing or seal assembly between a reciprocating, cylindrical member and a cylindrical wall of a housing in which the cylindrical member reciprocates.
- In one aspect, the header ring of the present invention has an annularly extending body portion, at least a portion of which comprises an elastomeric material, an annular pedestal portion formed on said body and having an annular, radially inwardly facing pedestal surface, a radially inwardly facing, annularly extending sealing lip formed on said body and having a radially inwardly facing sealing surface, at least a portion of the pedestal portion forming the pedestal surface and at least a portion of the sealing lip forming at least a portion of the sealing surface being comprised of a layer of fabric reinforced elastomeric material.
- In another aspect of the present invention, there is provided a sealing assembly for sealing between a cylindrical movable member and a housing having a cylindrical bore in which the cylindrical member reciprocates, the sealing assembly including a header ring as described above.
- The foregoing objects, features and advantages of the present invention, as well as others, will be more fully understood and better appreciated by reference to the following drawings, specification and claims.
-
FIG. 1 is a cross-sectional view of a prior art header ring prior to installation. -
FIG. 2 is a cross-sectional view of the header ring ofFIG. 1 which has been damaged by nibbling. -
FIG. 3 is a cross-sectional view of another type of prior art header ring prior to installation. -
FIG. 4 is a cross-sectional view of the header ring ofFIG. 3 which has been damaged by nibbling. -
FIG. 5 is a cross-sectional view of one embodiment of the header ring of the present invention. -
FIG. 6 is a cross-sectional view of another embodiment of the header ring of the present invention. -
FIG. 7 is a cross-sectional view of another embodiment of the header ring of the present invention. -
FIG. 8 is a schematic view, partly in section, of a sealing assembly according to the present invention in the stuffing box of a plunger pump. -
FIG. 9 is an enlarged view of the circled portion of the header ring shown inFIG. 8 . - Referring first to
FIG. 5 , theheader ring 50 comprises an annular body portion 52, an annular axially extendingpedestal 53, an annular, axially extendingbead 56, distal thepedestal 53, and a radially inwardly facing, annularly extendingsealing lip 58. As can be seen, body 52,bead 56,pedestal 53 andsealing lip 58 are integrally formed, for the most part, of a homogeneous, elastomeric material. However, aportion 60 of thepedestal 53 forming the radially inwardly facingcylindrical surface 61 and theportion 62 of thesealing lip 58 forming a portion ofsealing surface 64 is comprised of a layer of reinforced, elastomeric material, bonded to the homogeneous elastomeric material of the remainder ofheader ring 50. As seen, theportions juncture 63 ofsurfaces FIG. 5 , the fabric reinforcedsections -
FIG. 6 shows another embodiment of the present invention wherein theheader ring 68 has anannular body portion 70 which is primarily made of a homogeneous elastomeric material. Theheader ring 68 has an annular, radially outwardly facingcylindrical surface 72. Bonded to the homogeneous elastomeric portion ofbody 70 is anannular layer 74 of a fabric reinforced elastomer, thelayer 74 covering the surfaces of thepedestal 76, thesealing lip 78, thebead 80 and portions of the forward and rearward portions of thebody 70 formingsurface 72. As in the case of the embodiment shown inFIG. 5 , the portions of thepedestal 76 and sealinglip 78 formingjuncture 82 between thepedestal 76 and thesealing lip 78 is formed of a layer of fabric reinforced elastomeric material forming adjoiningsurfaces 82A and 82B. - Turning to
FIG. 7 , there is shown another embodiment of the present invention, wherein the header ring, shown generally as 88, has abody 89, thecore 90 of which is comprised of an elastomeric material, a portion ofannular pedestal 92 and a portion ofannular sealing lip 94. Unlike the embodiment shown inFIG. 6 , in the embodiment shown inFIG. 7 , the reinforcedfabric layer 96 completely encapsulates or surrounds thecore 90 ofbody portion 89. -
FIG. 8 depicts atypical sealing assembly 101 for use in a stuffing box, shown generally as 100, of a plunger-type pump employing a header ring of the present invention.Stuffing box 100 comprises ahousing 102 having abore 104 extending therethrough, bore 104 defining acylindrical surface 103.Housing 102 also has ashoulder portion 108. Movably, e.g., reciprocally, positioned inbore 104 is a plunger, piston orshaft 106.Sealing assembly 101 comprises anannular gland 105, anannular header ring 110, an-annular,first seal ring 112, and an annular,second seal ring 114. The sealingassembly 101 also includes a top,annular adaptor ring 116 and anannular bushing 118. As can be seen,header ring 110 forms a wiper ring at the high pressure end of the sealingassembly 101, its primary function being to prevent abrasives/solids from entering the region where the seal rings 112 and 114 are positioned and thereby prevent excessive wear onseal rings FIG. 8 ,header ring 110 no longer has the shape shown in, for example,FIG. 5 since the radially inwardly extending sealinglip 111 has been compressed to effect sealing between theplunger 106 and thehousing 102, thecylindrical surface 103 being in sealing engagement with an annular, radially outwardly facingsurface 109 of thecompressed header ring 110 which is generally cylindrical. - Referring now to
FIG. 9 , there is shown an enlargement of the circled portion ofFIG. 8 . As an example of the present invention,header ring 110 is constructed essentially the same as the header ring shown inFIG. 5 having a generally L-shaped, annularly extending reinforcing section orlayer 120 that bridges thejuncture 122 between the surface of sealinglip 124 and the surface ofpedestal 126. - While packing
assembly 101 has been shown as containing two seal rings of the chevron or V-shaped type, it will be appreciated that depending upon the use to which the plunger pump is subjected, fewer or more sealing rings can be employed. It will also be seen that theannular bead 119 ofheader ring 110 is nested in the annularly extending, axially facing groove inseal ring 112 so as to anchorseal ring 112 to theheader ring 110. It will be appreciated that the seal rings 112 and 114 can be constructed of various materials and have various shapes, the only provision being that they have sufficient resiliency to effect sealing between thehousing 102 andplunger 106. Generally speaking, components such asannular bushing 118,top adaptor 116, andannular gland 105 are made of a metallic material, e.g., brass. - The packing
assembly 101 can be energized byheader ring 110 and can be made to be adjustable by techniques well known in the art. If, however the packingassembly 101 is preloaded, care must be taken to ensure that the correct amount of preload is employed to prevent movement of the sealing assembly in the housing or stuffing box to prevent excessive wear on the sealing assembly. In this regard, if there is too little preload the packing will move in the housing wearing both the ID and OD of the seal rings as well as the header ring causing premature wear and in extreme cases causing wear in the stuffing box resulting in expensive repair or refurbishment. On the other hand, if the packing assembly is adjusted with too little preload, high friction forces cause accelerated wear of the header ring and the seal rings with premature failure. - The homogeneous elastomeric core of the header ring of the present invention can be made from a number of different natural or synthetic rubbers as, for example, nitrile or butadiene rubber, with a desired degree of hardness again depending upon the use to which the plunger pump is exposed. Likewise, the elastomeric portions of the seal rings 112 and 114 can be of various rubbers with desirable hardness. As indicated, the seal rings, e.g., seal rings 112 and 114, can be reinforced with fabric, can be homogeneous elastomeric materials, can have anti-extrusion portions, etc.
-
Sections FIG. 5 indicated, are generally a fabric reinforced rubber, synthetic or natural. The term fabric as used with respect to the anti-nibbling wear section of the various embodiments of the present invention is used in the broadest sense and includes any cloth or cloth-like structure made by any technique such as knitting, weaving or felting of fibers of natural or synthetic materials as well as mixed fibers and includes, without limitation, fibers of cotton, nylon, polyester, polyester blends, aramid fibers, fiberglass fibers or any combination thereof. - The foregoing description and examples illustrate selected embodiments of the present invention. In light thereof, variations and modifications will be suggested to one skilled in the art, all of which are in the spirit and purview of this invention.
Claims (31)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/440,585 US20120210868A1 (en) | 2008-01-02 | 2012-04-05 | Packing assembly for a pump |
US13/954,672 US20130330220A1 (en) | 2008-01-02 | 2013-07-30 | Packing assembly for a pump |
US14/459,869 US9534691B2 (en) | 2008-01-02 | 2014-08-14 | Packing assembly for a pump |
US15/370,625 US10428949B2 (en) | 2008-01-02 | 2016-12-06 | Packing assembly for a pump |
US16/444,999 US11300206B2 (en) | 2008-01-02 | 2019-06-18 | Packing assembly for a pump |
US17/457,204 US20220112953A1 (en) | 2008-01-02 | 2021-12-01 | Packing Assembly for a Pump |
US18/376,443 US20240026976A1 (en) | 2008-01-02 | 2023-10-04 | Starter ring for reciprocating plunger pump |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US1853808P | 2008-01-02 | 2008-01-02 | |
US12/347,207 US20090166980A1 (en) | 2008-01-02 | 2008-12-31 | Packing assembly for a pump |
US13/440,585 US20120210868A1 (en) | 2008-01-02 | 2012-04-05 | Packing assembly for a pump |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/347,207 Continuation US20090166980A1 (en) | 2008-01-02 | 2008-12-31 | Packing assembly for a pump |
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US13/954,672 Continuation US20130330220A1 (en) | 2008-01-02 | 2013-07-30 | Packing assembly for a pump |
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US20120210868A1 true US20120210868A1 (en) | 2012-08-23 |
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US12/347,207 Abandoned US20090166980A1 (en) | 2008-01-02 | 2008-12-31 | Packing assembly for a pump |
US13/440,585 Abandoned US20120210868A1 (en) | 2008-01-02 | 2012-04-05 | Packing assembly for a pump |
US13/954,672 Abandoned US20130330220A1 (en) | 2008-01-02 | 2013-07-30 | Packing assembly for a pump |
US14/459,869 Active 2030-01-28 US9534691B2 (en) | 2008-01-02 | 2014-08-14 | Packing assembly for a pump |
US15/370,625 Active 2029-06-18 US10428949B2 (en) | 2008-01-02 | 2016-12-06 | Packing assembly for a pump |
US16/444,999 Active US11300206B2 (en) | 2008-01-02 | 2019-06-18 | Packing assembly for a pump |
US17/457,204 Abandoned US20220112953A1 (en) | 2008-01-02 | 2021-12-01 | Packing Assembly for a Pump |
US18/376,443 Pending US20240026976A1 (en) | 2008-01-02 | 2023-10-04 | Starter ring for reciprocating plunger pump |
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US12/347,207 Abandoned US20090166980A1 (en) | 2008-01-02 | 2008-12-31 | Packing assembly for a pump |
Family Applications After (6)
Application Number | Title | Priority Date | Filing Date |
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US13/954,672 Abandoned US20130330220A1 (en) | 2008-01-02 | 2013-07-30 | Packing assembly for a pump |
US14/459,869 Active 2030-01-28 US9534691B2 (en) | 2008-01-02 | 2014-08-14 | Packing assembly for a pump |
US15/370,625 Active 2029-06-18 US10428949B2 (en) | 2008-01-02 | 2016-12-06 | Packing assembly for a pump |
US16/444,999 Active US11300206B2 (en) | 2008-01-02 | 2019-06-18 | Packing assembly for a pump |
US17/457,204 Abandoned US20220112953A1 (en) | 2008-01-02 | 2021-12-01 | Packing Assembly for a Pump |
US18/376,443 Pending US20240026976A1 (en) | 2008-01-02 | 2023-10-04 | Starter ring for reciprocating plunger pump |
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US (8) | US20090166980A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US11143305B1 (en) * | 2017-08-22 | 2021-10-12 | Garlock Sealing Technologies, Llc | Hydraulic components and methods of manufacturing |
Families Citing this family (25)
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US20090166980A1 (en) * | 2008-01-02 | 2009-07-02 | Miller John A | Packing assembly for a pump |
US8616555B2 (en) * | 2008-10-13 | 2013-12-31 | Schlumberger Technology Corporation | Packing assembly for reciprocating pumps |
US9845801B1 (en) * | 2012-01-03 | 2017-12-19 | FAST Group-Houston, Inc. | Header ring for reciprocating pump |
US9016693B1 (en) | 2012-01-25 | 2015-04-28 | FAST Group-Houston Inc. | Packing seal for reciprocating pump |
CN104500383B (en) * | 2014-11-20 | 2017-07-11 | 徐承韬 | A kind of plunger pump sealing apparatus |
US10077669B2 (en) * | 2014-11-26 | 2018-09-18 | United Technologies Corporation | Non-metallic engine case inlet compression seal for a gas turbine engine |
MX2019011830A (en) * | 2017-04-06 | 2019-11-07 | Ocv Intellectual Capital Llc | Reinforcement fibers with improved stiffness. |
USD893684S1 (en) * | 2017-08-22 | 2020-08-18 | Garlock Sealing Technologies, Llc | Header ring for a reciprocating stem or piston rod |
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US10837556B2 (en) | 2017-09-20 | 2020-11-17 | Fardner Denver Petroleum Pumps Llc | Packing for a well service pump |
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2014
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2016
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2019
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2021
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US11635145B1 (en) | 2017-08-22 | 2023-04-25 | Garlock Sealing Technologies, Llc | Hydraulic components and methods of manufacturing |
Also Published As
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US20220112953A1 (en) | 2022-04-14 |
US20090166980A1 (en) | 2009-07-02 |
US20130330220A1 (en) | 2013-12-12 |
US20190323608A1 (en) | 2019-10-24 |
US20170082199A1 (en) | 2017-03-23 |
US11300206B2 (en) | 2022-04-12 |
US9534691B2 (en) | 2017-01-03 |
US10428949B2 (en) | 2019-10-01 |
US20240026976A1 (en) | 2024-01-25 |
US20150377356A1 (en) | 2015-12-31 |
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