US3907309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient seal
Assignee: Caterpillar Inc
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Filing: 1974-08-12
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Granted: 1975-09-23
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Expires: 1994-08-12
Abstract
Abstract A resilient seal, for engagement between two surfaces, comprising an annular sealing portion of resilient sheet metal and having a transverse cross-section of channel shape, the base of the channel having a depression in its surface external to the channel and extending throughout the circular length of the seal, the seal also comprising a wire ring shrunk on the sealing portion and located in the depression in the base of the channel to urge the base of the channel inwardly and to cause the sides of the channel to be pressed laterally-outwardly of the channel into sealing engagement with the sealing surfaces.
Inventors
- 👤 Edward Griffiths
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:39
CPC Classifications
F; F28; F28D; F28D19/00; F28D19/04; F28D19/047; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/08; F16J15/0887; F16J15/16; F16J15/34; F16J15/3436; F16J15/3456; Y; Y10; Y10S; Y10S277/00; Y10S277/903; Y10S277/922; Y10S277/923
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
103 words
A resilient seal, for engagement between two surfaces, comprising an elongate sealing portion formed from resilient sheet material and having a transverse cross-section of channel shape, the base of the channel having a depression in the surface thereof external to the channel and extending throughout the length of the seal, the seal also comprising a constraining element located in the depression in the base of the channel and extending lengthwise thereof and acting to urge the base of the channel inwardly, thereby to cause the sides of the channel to be pressed laterally-outwardly of the channel into sealing engagement with the respective surfaces.
Claim 2
Dependent Claim
103 words
A resilient seal, for engagement between two surfaces, comprising an elongate sealing portion formed from resilient sheet material and having a transverse cross-section of channel shape, the base of the channel having a depression in the surface thereof external to the channel and extending throughout the length of the seal, the seal also comprising a constraining element located in the depression in the base of the channel and extending lengthwise thereof and acting to urge the base of the channel inwardly, thereby to cause the sides of the channel to be pressed laterally-outwardly of the channel into sealing engagement with the respective surfaces.
Claim 3
Dependent Claim
63 words
A seal as claimed in claim 1 in which the sealing portion is in the shape of a closed or substantially closed figure, the constraining member being a continuous band which is contracted around the seal to effect inward distortion of the base of the channel and hence laterally-outward distortion of the sides of the channel into sealing engagement with the respective surfaces.
Claim 4
Dependent Claim
49 words
A seal as claimed in claim 2 in which the band is shrunk on the sealing portion, whereby, when the band has assumed its shrunken peripheral length, the inward distortion of the base of the channel and the laterally-outward distortion of the sides of the channel will be effected.
Claim 5
Dependent Claim
50 words
A seal as claimed in claim 3 in which the sealing portion is of resilient metal sheet formed into a ring having a transverse cross-section of said channel shape throughout the peripheral length thereof and the constraining element is a wire ring which is shrunk on to the sealing ring.
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) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |