Patent US3937478A successfully refreshed from Google Patents.
US3937478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coining seal
Assignee: Individual
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Filing: 1974-11-18
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Granted: 1976-02-10
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Expires: 1994-11-18
Abstract
Abstract A bakeable high pressure-vacuum seal is provided in which an inductile sealing element having a butterfly shaped crosssection with protruding sharp edges at each of the four corners, is sandwiched between two ductile sealing elements, the sandwiched assembly then being compressed between the surfaces of the flange elements of a high pressure or high vacuum vessel to coin the ductile sealing element into the surface of the inductile sealing element as well as the surfaces of the flange elements.
Inventors
- 👤 Lloyd Mancebo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:37
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/08; F16J15/0881; Y; Y10; Y10S; Y10S277/00; Y10S277/913
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
135 words
A bakeable high pressure-vacuum seal to be compressed between two planar surfaces comprising a first generally inductile sealing element having a first sealing surface defining a first pair of protruding sharp edges and a second sealing surface defining a second pair of protruding sharp edges, a second generally ductile sealing element adapted to match the shape of said first sealing element and be compressed against said first sealing surface engaging both sharp edges of said first pair of protruding sharp edges, and a third generally ductile sealing element adapted to match the shape of said first sealing element and be compressed against said second sealing surface engaging both sharp edges of said second pair of protruding sharp edges, a second and third sealing elements being disposed between said two planar surfaces and compressed together thereby.
Claim 2
Dependent Claim
135 words
A bakeable high pressure-vacuum seal to be compressed between two planar surfaces comprising a first generally inductile sealing element having a first sealing surface defining a first pair of protruding sharp edges and a second sealing surface defining a second pair of protruding sharp edges, a second generally ductile sealing element adapted to match the shape of said first sealing element and be compressed against said first sealing surface engaging both sharp edges of said first pair of protruding sharp edges, and a third generally ductile sealing element adapted to match the shape of said first sealing element and be compressed against said second sealing surface engaging both sharp edges of said second pair of protruding sharp edges, a second and third sealing elements being disposed between said two planar surfaces and compressed together thereby.
Claim 3
Dependent Claim
88 words
The bakeable high pressure-vacuum seal as claimed in claim 1 wherein said first pair of protruding sharp edges comprises first inner and first outer edge member, said second pair of protruding sharp edges comprises second inner and second outer edge members, said inner sharp edge members having their sides facing away from said first sealing element disposed generally perpendicular to said ductile sealing elements, and said outer sharp edge members having their sides facing away from said first sealing element disposed generally perpendicular to said ductile sealing elements.
Claim 4
Dependent Claim
38 words
The bakeable high pressure-vacuum seal as claimed in Claim 1 wherein the cross-section through said first sealing element taken from the high pressure to low pressure side is butterfly shaped having sharp edges at the four outer corners.
Claim 5
Dependent Claim
189 words
A bakeable high pressure-vacuum seal adapted to be compressed between two planar surfaces comprising a first generally inductile sealing element having first and second sealing surfaces disposed on opposite sides of said first sealing element means defining a first groove having its two outer edges defining generally equal height protruding sharp edges disposed longitudinally along said first sealing surface, means defining a second groove having its two outer edges defining generally equal height protruding sharp edges disposed longitudinally along said second sealing surface, a second generally ductile sealing element adapted to match the shape of said first sealing element and be compressed against said first sealing surface the volume of said second sealing element being greater than the volume of said first groove, a third generally ductile sealing element adapted to match the shape of said first sealing element and be compressed against said second sealing surface the volume of said third sealing element being greater than the volume of said second groove, said three sealing elements being disposed between said two planar surfaces and compressed together whereby said protruding sharp edges are spaced apart from said planar surfaces.
Claim 6
Dependent Claim
189 words
A bakeable high pressure-vacuum seal adapted to be compressed between two planar surfaces comprising a first generally inductile sealing element having first and second sealing surfaces disposed on opposite sides of said first sealing element means defining a first groove having its two outer edges defining generally equal height protruding sharp edges disposed longitudinally along said first sealing surface, means defining a second groove having its two outer edges defining generally equal height protruding sharp edges disposed longitudinally along said second sealing surface, a second generally ductile sealing element adapted to match the shape of said first sealing element and be compressed against said first sealing surface the volume of said second sealing element being greater than the volume of said first groove, a third generally ductile sealing element adapted to match the shape of said first sealing element and be compressed against said second sealing surface the volume of said third sealing element being greater than the volume of said second groove, said three sealing elements being disposed between said two planar surfaces and compressed together whereby said protruding sharp edges are spaced apart from said planar surfaces.
Claim 7
Dependent Claim
26 words
The bakeable high pressure-vacuum seal as claimed in claim 4 wherein said first and second grooves define V-shaped grooves having a pair of protruding sharp edges.
Claim 8
Dependent Claim
74 words
The bakeable high pressure-vacuum seal as claimed in claim 5 wherein said pair of protruding sharp edges comprise inner and outer sharp edge members, said inner sharp edge members having their sides facing away from said first sealing element disposed generally prependicular to said second and third sealing elements. said outer sharp edge members having their sides facing away from said first sealing element disposed generally perpendicular to said second and third sealing elements.
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) | 1979-02-09 | 1979-08-11 | 1980-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-09 | 1983-08-11 | 1984-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-09 | 1987-08-11 | 1988-02-10 | $7700.00 | Window Closed / Lapsed |