US3726549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe joint retainer gland
Assignee: Individual
•
Filing: 1971-09-15
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Granted: 1973-04-10
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Expires: 1991-09-15
Abstract
Abstract A mechanical joint including an integral bell on a first pipe provided with a flange having axial bolt holes, a plain end on a second pipe receivable in the bell, an annular gasket for sealing around the plain pipe end within the bell, and a retainer gland having bolt holes aligned with bolt holes in the bell flange for the securing of the gland with the bell flange to hold the gasket in sealed relationship between the gland, the plain pipe end, and the bell, the retainer gland being particularly characterized by circumferentially spaced set screws disposed radially through tapped holes partially in the gland lip and partially in the gland flange and extending through arcuate recesses provided in the gland flange with arcuate protuberances or bosses on the back face of the flange aligned with the arcuate recesses. The gland is disposed on the bare pipe end and secured to the bell flange by tee-head bolts while the set screws through the gland are tightened against the plain pipe end for holding the joint together to maintain the pipe with the plain pipe end coupled into the pipe with the bell while the gland additionally holds the gasket in a sealed relationship around the plain pipe end within the bell confined by the gland lip.
Inventors
- 👤 E Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:03
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/02; F16L21/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
259 words
A retainer gland for use in a mechanical joint between pipe ends for coupling said pipe ends in fluid conducting relationship and holding said pipes against separation, said gland comprising: an annular member adapted to be positioned on a first of said pipes and having a lip portion substantially cylindrical in shape provided with a forward end edge for engaging a gasket disposed within an internal annular recess of a bell fitting on a second of said pipes, said annular member having an integral ring-shaped flange provided with a plurality of axially extending, circumferentially spaced bolt holes alignable with corresponding bolt holes on a flange of said bell fitting for receiving bolts for holding said gland to said bell fitting, said gland being provided with a plurality of circumferentially spaced radially extending tapped holes disposed partially through said lip and partially through said flange, each of said holes being adapted to receive a set screw for engaging a surface of said first pipe within said gland for locking said gland on said pipe surface, said flange portion of said gland having radially extending set screw clearance recesses formed along the front face of said flange and aligned with said tapped holes to provide clearance space along said flange to receive the shanks of set screws disposed through said tapped holes, and protuberances along the back face of said flange aligned with said clearance recesses whereby the wall thickness of said flange along said clearance recesses is substantially equal to the wall thickness of said flange between said clearance recesses.
Claim 2
Dependent Claim
259 words
A retainer gland for use in a mechanical joint between pipe ends for coupling said pipe ends in fluid conducting relationship and holding said pipes against separation, said gland comprising: an annular member adapted to be positioned on a first of said pipes and having a lip portion substantially cylindrical in shape provided with a forward end edge for engaging a gasket disposed within an internal annular recess of a bell fitting on a second of said pipes, said annular member having an integral ring-shaped flange provided with a plurality of axially extending, circumferentially spaced bolt holes alignable with corresponding bolt holes on a flange of said bell fitting for receiving bolts for holding said gland to said bell fitting, said gland being provided with a plurality of circumferentially spaced radially extending tapped holes disposed partially through said lip and partially through said flange, each of said holes being adapted to receive a set screw for engaging a surface of said first pipe within said gland for locking said gland on said pipe surface, said flange portion of said gland having radially extending set screw clearance recesses formed along the front face of said flange and aligned with said tapped holes to provide clearance space along said flange to receive the shanks of set screws disposed through said tapped holes, and protuberances along the back face of said flange aligned with said clearance recesses whereby the wall thickness of said flange along said clearance recesses is substantially equal to the wall thickness of said flange between said clearance recesses.
Claim 3
Dependent Claim
107 words
A retainer gland for a mechanical joint in accordance with claim 1, wherein each of said clearance recesses is a substantially semi-cylindrical shape extending radially along the front face of said gland flange and developed along an axis substantially coincident with the axis of the set screw tapped hole aligned with said clearance recess and each of said flange protuberances has an outer arcuate surface disposed in generally parallel relationship with the surface of said flange defining the clearance recess aligned with said protuberance, whereby the wall thickness of the gland flange between each said clearance recess and the thickness of each flange protuberance remains substantially equal.
Claim 4
Dependent Claim
36 words
A retainer gland in accordance with claim 2, wherein each of said set screw tapped holes is positioned to dispose substantially half of said hole through said lip and half of said hole through said flange.
Claim 5
Dependent Claim
42 words
A retainer gland in accordance with claim 3, wherein one of said tapped set screw holes with a corresponding aligned set screw clearance recess and a flange protuberance are disposed between each pair of adjAcent axially aligned holes in said gland flange.
Claim 6
Dependent Claim
28 words
A retainer gland in accordance with claim 4, including a set screw threaded through each of said tapped holes for releasably locking said gland on a pipe surface.
Claim 7
Dependent Claim
45 words
A retainer gland in accordance with claim 3, including at least two of said tapped set screw holes with corresponding set screw clearance recesses and flange protuberances positioned in circumferentially spaced relationship between each pair of adjacent axially aligned bolt holes in said gland flange.
Claim 8
Dependent Claim
29 words
A retainer gland in accordance with claim 6, including a set screw threaded through each of said tapped set screw holes for holding said gland on a pipe surface.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |