US3837631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring for composite sealing ring and method of manufacture
Assignee: Saint Gobain Performance Plastics Corp
•
Filing: 1972-05-08
•
Granted: 1974-09-24
•
Expires: 1992-05-08
Abstract
Abstract A spring for a composite sealing ring of the type having a channel-shaped jacket. The spring comprises an annular member of U-shaped cross section, the web of the U engaging the web of the jacket, the flanges of the U pressing against the flanges of the jacket and having a plurality of circumferentially spaced slots. In one form, useful primarily for radial seals, the spring comprises a sinuous member bent to form the web and flanges. In another form, useful for face seals, the web is circumferentially continuous and the flanges are formed by spaced legs. The spring is fabricated by first forming it in flat shape and then bending the flanges out of the plane of the web. The flat blank may be made by a photoetch process or, in the case of the sinuous embodiment, bending a wire into sinuous shape, flattening the wire and then bending the flanges away from the web.
Inventors
- 👤 B Evans
- 👤 E Elsner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:49
CPC Classifications
B; B23; B23P; B23P13/00; F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3204; F16J15/3232; F16J15/3236; F16J15/34; F16J15/3436; F16J15/3456
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
171 words
A spring for a composite sealing ring of the type having an annular flexible sealing jacket of channel-shaped cross section with a web and a pair of flanges engaging the parts to be sealed, said spring comprising an annular member of U-shaped cross section having a flat web engaging the web of said jacket and a pair of flat flanges engaging and pressing outwardly on the flanges of said jacket, said web being as wide as and conforming to the shape of the bottom of said jacket channel, whereby the flange portions adjacent said web will be at least as far apart as their portions remote from said web when the ring is installed in said channel, said flanges having circumferentially spaced slots and engaging the walls of said jacket channel from their portions adjacent to their portions remote from the channel bottom, said spaces being substantially narrower than the portions of said spring between said spaces so as to prevent said jacket from appreciably extruding into said spaces during operation.
Claim 2
Dependent Claim
171 words
A spring for a composite sealing ring of the type having an annular flexible sealing jacket of channel-shaped cross section with a web and a pair of flanges engaging the parts to be sealed, said spring comprising an annular member of U-shaped cross section having a flat web engaging the web of said jacket and a pair of flat flanges engaging and pressing outwardly on the flanges of said jacket, said web being as wide as and conforming to the shape of the bottom of said jacket channel, whereby the flange portions adjacent said web will be at least as far apart as their portions remote from said web when the ring is installed in said channel, said flanges having circumferentially spaced slots and engaging the walls of said jacket channel from their portions adjacent to their portions remote from the channel bottom, said spaces being substantially narrower than the portions of said spring between said spaces so as to prevent said jacket from appreciably extruding into said spaces during operation.
Claim 3
Dependent Claim
145 words
A spring for a composite sealing ring of the type having an annular flexible sealing jacket of channel-shaped cross section with a web and a pair of flanges engaging the parts to be sealed, said spring comprising an annular member of U-shaped cross section having a web engaging the web of said jacket and a pair of flanges engaging and pressing outwardly on the flanges of said jacket, said flanges having circumferentially spaced slots, said spring being fabricated of a flat member which extends sinuously through both flanges and the web, whereby said slots will extend from alternate flanges through said web, each slot extending completely through one flange and said web and partially through the other flange, the slots being substantially narrower than said web and flanges and sufficiently narrow as to prevent appreciable extrusion of the jacket material into the slots during use.
Claim 4
Dependent Claim
145 words
A spring for a composite sealing ring of the type having an annular flexible sealing jacket of channel-shaped cross section with a web and a pair of flanges engaging the parts to be sealed, said spring comprising an annular member of U-shaped cross section having a web engaging the web of said jacket and a pair of flanges engaging and pressing outwardly on the flanges of said jacket, said flanges having circumferentially spaced slots, said spring being fabricated of a flat member which extends sinuously through both flanges and the web, whereby said slots will extend from alternate flanges through said web, each slot extending completely through one flange and said web and partially through the other flange, the slots being substantially narrower than said web and flanges and sufficiently narrow as to prevent appreciable extrusion of the jacket material into the slots during use.
Claim 5
Dependent Claim
15 words
The combination according to claim 2, the ends of said spring being in abutting relation.
Claim 6
Dependent Claim
18 words
The combination according to claim 2, the ends of said spring being in abutting relation and welded together.
Claim 7
Dependent Claim
22 words
The combination according to claim 2, the ends of said spring being in abutting relation and having a slot and dovetail connection.
Claim 8
Dependent Claim
18 words
The combination according to claim 2, the ends of said spring being in abutting relation and stapled together.
Claim 9
Dependent Claim
42 words
The combination according to claim 1, said spring being fabricated from a flat blank having a continuous central portion and oppositely extending fingers with said slots therebetween, said fingers being bent to form the flanges with the continuous portion forming the web.
Claim 10
Dependent Claim
15 words
The combination according to claim 7, the ends of said spring being in abutting relation.
References Cited (Backward Citations)
US3357693A
Cited
US3346264A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |