Patent US3561776A successfully refreshed from Google Patents.
US3561776A
Expired / Lapsed
US
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Composite ring seal and method of making
Assignee: Saint Gobain Performance Plastics Corp
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Filing: 1968-11-20
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Granted: 1971-02-09
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Expires: 1988-11-20
Abstract
Abstract A radial loaded ring seal having an annular jacket of suitable material such as Teflon, the jacket being of channel-shaped cross section surrounding a loading spring of channel-shaped cross section, the loading spring being fabricated from a spring strip of suitable material such as stainless steel by being helically wound into a tube in which the edge margins of the successive convolutions are in overlapping relation, the tube then being formed into a ring and deformed under suitable pressure means in a die or by other suitable means into a generally U-shaped annular spring member having a double-walled channel with a radial side opening, after which the preformed jacket is applied to the spring to provide a composite structure in which the jacket forms a shield for the spring which in turn provides radial energizing means for the jacket.
Inventors
- 👤 John D Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:55
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/12; F16J15/121; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/944; Y10S277/945; Y10S277/946
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
69 words
A composite sealing ring, comprising: a. an annular flexible sealing jacket of channel-shape in cross section formed to provide spaced opposed side walls; and b. circumferentially extending spring loading means between said sidewalls, said spring means comprising a helically wound flat strip and being of generally channel shape configuration in cross section and formed to provide spaced opposed sidewalls respectively acting on said jacket sidewalls to resist deformation thereof.
Claim 2
Dependent Claim
69 words
A composite sealing ring, comprising: a. an annular flexible sealing jacket of channel-shape in cross section formed to provide spaced opposed side walls; and b. circumferentially extending spring loading means between said sidewalls, said spring means comprising a helically wound flat strip and being of generally channel shape configuration in cross section and formed to provide spaced opposed sidewalls respectively acting on said jacket sidewalls to resist deformation thereof.
Claim 3
Dependent Claim
17 words
A sealing ring according to claim 1, wherein the wound strip presents an imperforate substantially smooth surface.
Claim 4
Dependent Claim
22 words
A sealing ring according to claim 1, wherein the edge margins of successive convolutions of the wound strip are in overlapping relation.
Claim 5
Dependent Claim
20 words
A sealing ring according to claim 3, wherein the exposed overlapped edge is of less thickness than the concealed edge.
Claim 6
Dependent Claim
21 words
A sealing ring according to claim 1, wherein the spring means channel is substantially U-shaped and formed with a double wall.
Claim 7
Dependent Claim
77 words
As an article of manufacture, annular spring means, comprising: a. a ring formed by a helically wound ribbonlike strip having overlapped convolutions, said wound strip having its opposite ends connected; b. said ring having a double-walled U-shaped cross section including an inner wall and an outer wall; and c. with the portions of the convolutions in one of said walls being oppositely inclined in relation to the portions of the convolutions in the other of said walls.
Claim 8
Dependent Claim
77 words
As an article of manufacture, annular spring means, comprising: a. a ring formed by a helically wound ribbonlike strip having overlapped convolutions, said wound strip having its opposite ends connected; b. said ring having a double-walled U-shaped cross section including an inner wall and an outer wall; and c. with the portions of the convolutions in one of said walls being oppositely inclined in relation to the portions of the convolutions in the other of said walls.
Claim 9
Dependent Claim
14 words
An article of manufacture according to claim 6, wherein the ring surface is imperforate.
Claim 10
Independent Claim
79 words
The method of fabricating a composite sealing ring, which comprises the steps of: a. forming annular spring means of generally channel-shaped cross section having a side opening and in which a helically wound ribbonlike strip of spring material has marginally material successive convolutions; and b. thereafter conforming to the spring means a flexible sealing material to provide a ring jacket having a channel-shaped cross section with channel wall portions respectively embracing opposed channel wall portions of the spring means.
Claim 11
Independent Claim
79 words
The method of fabricating a composite sealing ring, which comprises the steps of: a. forming annular spring means of generally channel-shaped cross section having a side opening and in which a helically wound ribbonlike strip of spring material has marginally material successive convolutions; and b. thereafter conforming to the spring means a flexible sealing material to provide a ring jacket having a channel-shaped cross section with channel wall portions respectively embracing opposed channel wall portions of the spring means.
Claim 12
Dependent Claim
18 words
The method according to claim 8, wherein the edge margins of successive convolutions are wound into overlappIng relation.
Claim 13
Dependent Claim
21 words
The method according to claim 9, wherein the spring means presents a substantially smooth imperforate surface of engagement to the jacket.
Claim 14
Independent Claim
80 words
The method of fabricating a loading spring for a composite sealing ring, which comprises the steps of: a. helically winding a ribbonlike strip of spring material into a tubular structure in which the edge margins of successive convolutions are in overlapped relation; b. forming an elongate portion of the tubular structure into a ring configuration with the opposite ends of the portion juxtaposed; and c. thereafter deforming the ring wall to obtain a ring configuration having a channel cross section.
Claim 15
Independent Claim
80 words
The method of fabricating a loading spring for a composite sealing ring, which comprises the steps of: a. helically winding a ribbonlike strip of spring material into a tubular structure in which the edge margins of successive convolutions are in overlapped relation; b. forming an elongate portion of the tubular structure into a ring configuration with the opposite ends of the portion juxtaposed; and c. thereafter deforming the ring wall to obtain a ring configuration having a channel cross section.
Claim 16
Dependent Claim
16 words
The method according to claim 11, wherein the deformed ring wall provides a substantially U-shaped channel.
Claim 17
Dependent Claim
16 words
The method according to claim 11, wherein the ring channel is defined by a double wall.
Claim 18
Dependent Claim
23 words
The method according to claim 11, including the additional step of bonding the strip ends together at the juxtaposed ends of said portion.
Claim 19
Dependent Claim
36 words
The method according to claim 11, wherein the edge of the wound strip which is outwardly exposed is of less thickness than the other edge, whereby the tubular structure will have a substantially smooth outer surface.
Claim 20
Dependent Claim
23 words
The method according to claim 11, wherein the ribbonlike strip prior to winding is stretched along its leading edge to decrease its thickness.
Claim 21
Dependent Claim
40 words
The method according to claim 16, wherein said leading edge is stretched by feeding the strip edgewise, prior to winding, over an arcuate path in which the leading edge is radially outwardly positioned with respect to the other strip edge.
Claim 22
Dependent Claim
26 words
The method according to claim 11, wherein the ring wall is die deformed to provide a double-walled circumferentially extending U-shaped channel having a radial open side.
Claim 23
Dependent Claim
54 words
A sealing ring, comprising: a. annular spring means of U-shaped transverse section including a helically wound ribbonlike strip having overlapped convolutions coacting to provide a doublewall in said section; and b. a sealing medium overlying surfaces of the wound strip adapted to sealingly engage a surface under the loading provided by said spring means.
Claim 24
Dependent Claim
54 words
A sealing ring, comprising: a. annular spring means of U-shaped transverse section including a helically wound ribbonlike strip having overlapped convolutions coacting to provide a doublewall in said section; and b. a sealing medium overlying surfaces of the wound strip adapted to sealingly engage a surface under the loading provided by said spring means.
Claim 25
Dependent Claim
84 words
A composite sealing ring, comprising: a. an annular flexible sealing jacket of channel-shape in cross section formed to provide spaced opposed sidewalls; b. circumferentially extending spring loading means between said sidewalls, said spring means being of generally channel-shape configuration in cross section and formed to provide spaced opposed sidewalls respectively acting on said jacket sidewalls to resist deformation thereof; and c. said jacket sidewalls having inner and outer wall portions embracing and shielding the spring means in an operative position from the sealed medium.
Claim 26
Dependent Claim
84 words
A composite sealing ring, comprising: a. an annular flexible sealing jacket of channel-shape in cross section formed to provide spaced opposed sidewalls; b. circumferentially extending spring loading means between said sidewalls, said spring means being of generally channel-shape configuration in cross section and formed to provide spaced opposed sidewalls respectively acting on said jacket sidewalls to resist deformation thereof; and c. said jacket sidewalls having inner and outer wall portions embracing and shielding the spring means in an operative position from the sealed medium.
Claim 27
Dependent Claim
19 words
A sealing ring according to claim 20, wherein the jacket outer wall portions have circumferentially extending outer sealing faces.
Claim 28
Dependent Claim
42 words
A sealing ring according to claim 20, wherein the spring means has a substantially U-shaped cross section with sidewalls extending from a bottom bridging portion, and the jacket sidewalls include portions overlapping said bottom bridging portion on its inner and outer surfaces.
Claim 29
Dependent Claim
112 words
A composite sealing ring, comprising: a. an annular flexible sealing jacket of channel-shape in cross section formed to provide spaced opposed sidewalls; b. circumferentially extending spring loading means between said sidewalls, said spring means being of generally channel shape configuration in cross section and formed to provided spaced opposed sidewalls respectively acting on said jacket sidewalls to resist deformation thereof; and c. said jacket channel being substantially W-shaped and the spring means channel being substantially U-shaped, the jacket and spring means being mounted with the open sides of said channels in confronting relation, and the jacket wall portions embracing and shielding the spring means in an operative positiOn from the sealed medium.
Claim 30
Dependent Claim
112 words
A composite sealing ring, comprising: a. an annular flexible sealing jacket of channel-shape in cross section formed to provide spaced opposed sidewalls; b. circumferentially extending spring loading means between said sidewalls, said spring means being of generally channel shape configuration in cross section and formed to provided spaced opposed sidewalls respectively acting on said jacket sidewalls to resist deformation thereof; and c. said jacket channel being substantially W-shaped and the spring means channel being substantially U-shaped, the jacket and spring means being mounted with the open sides of said channels in confronting relation, and the jacket wall portions embracing and shielding the spring means in an operative positiOn from the sealed medium.
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |