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US3761052A Expired / Lapsed US ⏱️ 0.0 years remaining

Flow plugger valve

Assignee: WHITNEY RES TOOL Co
•
Filing: 1972-02-07
•
Granted: 1973-09-25
•
Expires: 1992-02-07
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Abstract

Abstract The specification and drawings disclose a valve particularly suited for abrasive or corrosive fluids. The disclosed valve comprises a body with a generally conically shaped valve chamber and a seat insert removably positioned in the chamber. A bonnet member is removably connected to the body and has a cylindrical valve plug receiving opening axially aligned with the seat includes a first cylindrical section slidingly received in the opening an a conically shaped inner end portion adapted to enter and sealingly engage the seat insert. An actuating stem is threaded into the bonnet in axial alignment with the opening. The inner end of the stem is releasably and rotatably connected to the cylindrical end of the plug so that upon rotation of the stem, the plug can be moved toward and away from the seat. Seal ring means are carried by the cylindrical portion of the plug for sealingly engaging the walls of the opening. The seal ring means prevents fluids from passing from the valve chamber into the bonnet and seal both the stem-plug connection and the stem threads from the fluid. The seal ring means comprise an assembly of three ring members including a resilient O-ring positioned between two resilient washers. The inner washer acts as a wiping ring to clean the bore of abrasive particles and prevent wear on the O-ring. The O-ring performs the primary fluid seal function and the outer washer prevents blow-out of the O-ring under operating pressure.

Inventors

  • 👤 W Tobbe
  • 👤 E Benway
  • 👤 D Simko
  • 👤 B Gallagher
  • 👤 J Boylan

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 13:27
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/22

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 226 words
A valve comprising: a body having a laterally inwardly extending bore which defines a valve chamber, the inner end of said bore being of truncated conical configuration, inlet and outlet flow passages connected with said conical shaped portion; a hollow, conically shaped seat insert formed from resilient material positioned in said bore, said insert having ports formed therein to align with the inlet and outlet flow passages; a bonnet threaded in the outer end of said bore, said bonnet having a cylindrical bore axially aligned with the bore in said body, the inner end of said bonnet adapted to sealingly engage the outer end of said insert and a shoulder in the bore in said body; an actuating stem extending axially into said bonnet bore; a plug valve member releasably connected to the end of said stem by connecting means for permitting free rotation of said plug member relative to said stem, said plug member having a first cylindrically shaped portion which is slidably received in said bonnet bore and a conically shaped second portion adapted to sealingly engage said insert, sealing rings carried in said plug member about said first portion between said connecting means and said second portion for sealingly engaging said cylindrical bore in said bonnet and preventing fluid passing through said valve chamber from engaging said connecting means and said actuating stem.
Claim 2
Dependent Claim 226 words
A valve comprising: a body having a laterally inwardly extending bore which defines a valve chamber, the inner end of said bore being of truncated conical configuration, inlet and outlet flow passages connected with said conical shaped portion; a hollow, conically shaped seat insert formed from resilient material positioned in said bore, said insert having ports formed therein to align with the inlet and outlet flow passages; a bonnet threaded in the outer end of said bore, said bonnet having a cylindrical bore axially aligned with the bore in said body, the inner end of said bonnet adapted to sealingly engage the outer end of said insert and a shoulder in the bore in said body; an actuating stem extending axially into said bonnet bore; a plug valve member releasably connected to the end of said stem by connecting means for permitting free rotation of said plug member relative to said stem, said plug member having a first cylindrically shaped portion which is slidably received in said bonnet bore and a conically shaped second portion adapted to sealingly engage said insert, sealing rings carried in said plug member about said first portion between said connecting means and said second portion for sealingly engaging said cylindrical bore in said bonnet and preventing fluid passing through said valve chamber from engaging said connecting means and said actuating stem.
Claim 3
Dependent Claim 31 words
The valve as defined in claim 1 wherein said connecting means comprise a transverse T-slot formed in the cylindrical portion of said valve member and a T-head formed in said stem.
Claim 4
Dependent Claim 27 words
The valve as defined in claim 2 wherein said sealing rings carried in said plug member are located between said T-slot and said conically shaped second portion.
Claim 5
Dependent Claim 47 words
The valve as defined in claim 2 wherein said stem is axially movable in said bonnet bore a distance sufficient such that when said bonnet is removed from said body, said valve member can be moved completely out of said bonnet bore without disassembly of the handle.
Claim 6
Dependent Claim 25 words
The valve as defined in claim 1 wherein said bonnet and said stem include cooperating thread portions located axially outwardly of said cylindrical bonnet bore.
Claim 7
Dependent Claim 21 words
The valve as defined in claim 1 wherein said sealing rings include an O-ring positioned between a pair of wiping rings.
Claim 8
Dependent Claim 23 words
The valve as defined in claim 1 wherein said seat insert member is provided with means to prevent rotation in said valve chamber.
Claim 9
Dependent Claim 35 words
The valve as defined in claim 7 wherein said connecting means include a transverse slot formed in said plug member and an enlarged end portion on said stem adapted to slide laterally into said slot.
Claim 10
Dependent Claim 29 words
The valve as defined in claim 1 wherein said cylindrical portion of said plug is closely received in said bonnet bore and guided thereby throughout movement of said stem.

References Cited (Backward Citations)

US2507851A Cited
US2856961A Cited
US2994343A Cited
US3100501A Cited
US3441249A Cited
US3443789A Cited
US3512753A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-09-24 1977-03-26 1977-09-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-09-24 1981-03-26 1981-09-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-09-24 1985-03-26 1985-09-25 $7700.00 Window Closed / Lapsed

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