US4592558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring ring and hat ring seal
Assignee: Hydril Co LP
•
Filing: 1984-10-17
•
Granted: 1986-06-03
•
Expires: 2004-10-17
Abstract
Abstract A ring seal comprising a main body member having a U-shape cup recess opening on one side, usually having a U-shape metal spring located therein, and a hat ring with a solid projection fitting into the U-shape cup recess opening and having its opposite face being flat and normal to the ring axis. A back up ring adjacent the heel of the main body ring can be provided. An assembly of such ring seals can be stacked heel-to-heel; hat-ring-to-hat-ring or heel-to-hat-ring.
Inventors
- 👤 John F. Hopkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:22
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3204; F16J15/3208; F16J15/3212; F16J15/3232; F16J15/3236
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
110 words
A ring seal comprising a main body ring having a U-shape cup recess on at least one side, thereby defining legs about said recess, said recess having a round internal surface, the opening of said recess being from a direction parallel to its axis, and a hat ring with a solid ring projection portion on at least one side for fitting into said recess of said main body ring, the end of said projection portion presenting a corner for engaging at least one leg for allowing the outward portion of said engaged leg to flex inwardly to conform to said projection portion, thereby limiting the inward collapse of said recess.
Claim 2
Dependent Claim
110 words
A ring seal comprising a main body ring having a U-shape cup recess on at least one side, thereby defining legs about said recess, said recess having a round internal surface, the opening of said recess being from a direction parallel to its axis, and a hat ring with a solid ring projection portion on at least one side for fitting into said recess of said main body ring, the end of said projection portion presenting a corner for engaging at least one leg for allowing the outward portion of said engaged leg to flex inwardly to conform to said projection portion, thereby limiting the inward collapse of said recess.
Claim 3
Dependent Claim
43 words
A ring seal in accordance with claim 1, and including a spring within said recess of said main body and conforming therewith, the outward portion thereof flexing inwardly with said engaged leg against said corner of said projection portion of said hat ring.
Claim 4
Dependent Claim
37 words
A ring seal in accordance with claim 2, wherein the external surface dimension of said main body radially outward of said opening is larger than the radial outward dimension of the heel of said main body ring.
Claim 5
Dependent Claim
37 words
A ring seal in accordance with claim 3, wherein the width of said hat ring is slightly larger than the width of the side of said main body ring when said seal is subjected to operating pressure.
Claim 6
Dependent Claim
38 words
A ring seal in accordance with claim 2, wherein the internal surface dimension of said main body ring radially inward of said opening is smaller than the radial inward dimension of the heel of said main body ring.
Claim 7
Dependent Claim
37 words
A ring seal in accordance with claim 5, wherein the width of said hat ring is slightly larger than the width of the side of said main body ring when said seal is subjected to operating pressure.
Claim 8
Dependent Claim
18 words
A ring seal in accordance with claim 1, wherein said main body ring is made of polymeric material.
Claim 9
Dependent Claim
17 words
A ring seal in accordance with claim 7, wherein said hat ring is made of polymeric material.
Claim 10
Dependent Claim
17 words
A ring seal in accordance with claim 7, wherein said hat ring is made of stainless steel.
Claim 11
Dependent Claim
84 words
A hat ring for accommodating with a ring seal main body having a U-shape recess opening on at least one side, thereby defining legs about said recess, said recess having a rounded internal surface, said hat ring having a solid ring projection portion, the end of said projection portion presenting a corner for engaging at least one leg for allowing the outward portion of said engaged leg to flex inwardly to conform to said projection portion, thereby limiting the inward collapse of said recess.
Claim 12
Dependent Claim
84 words
A hat ring for accommodating with a ring seal main body having a U-shape recess opening on at least one side, thereby defining legs about said recess, said recess having a rounded internal surface, said hat ring having a solid ring projection portion, the end of said projection portion presenting a corner for engaging at least one leg for allowing the outward portion of said engaged leg to flex inwardly to conform to said projection portion, thereby limiting the inward collapse of said recess.
Claim 13
Dependent Claim
29 words
A hat ring in accordance with claim 10, having a width that is slightly larger than the width of the side of said main body while under operating pressure.
Claim 14
Dependent Claim
12 words
A hat ring in accordance with claim 10 made of polymeric material.
Claim 15
Dependent Claim
12 words
A hat ring in accordance with claim 10 made of stainless steel.
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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) | 1989-06-02 | 1989-12-02 | 1990-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-02 | 1993-12-02 | 1994-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-02 | 1997-12-02 | 1998-06-03 | $7700.00 | Window Closed / Lapsed |