US3790179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packing
Assignee: Parker Hannifin Corp
•
Filing: 1972-01-10
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Granted: 1974-02-05
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Expires: 1992-01-10
Abstract
Abstract An annular generally V shaped sealing ring for use in multi-ring packing assemblies for hydraulic sealing applications, the ring having a flat base and a flat seat on the opposite side of the ring for accommodating the base of a similar, adjacent sealing ring. The ring also having two sealing lips, the inner and outer sides of each lip extending from the radially corresponding inner and outer edges of the base and seat, and the lips being formed such that, when the base of one ring is abutting the seat of another, the lips of the one ring do not contact the lips of the other except at high system fluid pressures.
Inventors
- 👤 J Scannell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:53
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
109 words
A sealing ring of substantially V shaped cross section comprising a base having upper and lower flat transverse faces and having radially inner and outer surfaces that include upper and lower tapered portions with a transverse shoulder therebetween, radially opposed inner and outer diverging lips extending generally axially from said base, each lip having radially inner and outer surfaces angled relative to a transverse plane, the angle of the lip inner surfaces being smaller than the angle of the lip outer surfaces, and the base upper tapered portion having an angle to said plane that is less than the angle of the lower tapered portion relative to said plane.
Claim 2
Dependent Claim
109 words
A sealing ring of substantially V shaped cross section comprising a base having upper and lower flat transverse faces and having radially inner and outer surfaces that include upper and lower tapered portions with a transverse shoulder therebetween, radially opposed inner and outer diverging lips extending generally axially from said base, each lip having radially inner and outer surfaces angled relative to a transverse plane, the angle of the lip inner surfaces being smaller than the angle of the lip outer surfaces, and the base upper tapered portion having an angle to said plane that is less than the angle of the lower tapered portion relative to said plane.
Claim 3
Dependent Claim
42 words
The ring of claim 1 in which the free ends of lips have transverse faces of a width greater than the width of said shoulders and the width of said upper face is no greater than the width of said lower face.
Claim 4
Dependent Claim
257 words
In combination, inner and outer members forming an annular chamber therebetween with one end of the chamber exposed to fluid contained by said members, said chamber having opposed radially spaced inner and outer surfaces to be sealed, first aNd second generally V shaped elastomeric sealing rings in said chamber, said first ring having a base with a lower transverse face and having radially opposed inner and outer diverging lips extending generally axially from said base, said lips each having an inner surface extending at an angle to a transverse plane, said second ring nested in the first ring and having a base with an upper transverse face in engagement with the lower transverse face of the first ring and also having a lower transverse face, the base of the second ring having diverging radially inner and outer surfaces of axial length slightly longer than the axial length of the lips on said first ring and having an angle relative to said plane that is smaller than said angle of the inner lip surfaces of said first ring whereby there is an initial wedge shaped clearance between said base radially outer surfaces of the second ring and the lip inner surfaces of the first ring, and said second ring being deformable by high pressure fluid entering said one end of said chamber whereby said base radially outer surfaces of the second ring as forced against said lip inner surfaces of said first ring to press the lips of the first ring into tighter engagement with said member surfaces.
Claim 5
Dependent Claim
257 words
In combination, inner and outer members forming an annular chamber therebetween with one end of the chamber exposed to fluid contained by said members, said chamber having opposed radially spaced inner and outer surfaces to be sealed, first aNd second generally V shaped elastomeric sealing rings in said chamber, said first ring having a base with a lower transverse face and having radially opposed inner and outer diverging lips extending generally axially from said base, said lips each having an inner surface extending at an angle to a transverse plane, said second ring nested in the first ring and having a base with an upper transverse face in engagement with the lower transverse face of the first ring and also having a lower transverse face, the base of the second ring having diverging radially inner and outer surfaces of axial length slightly longer than the axial length of the lips on said first ring and having an angle relative to said plane that is smaller than said angle of the inner lip surfaces of said first ring whereby there is an initial wedge shaped clearance between said base radially outer surfaces of the second ring and the lip inner surfaces of the first ring, and said second ring being deformable by high pressure fluid entering said one end of said chamber whereby said base radially outer surfaces of the second ring as forced against said lip inner surfaces of said first ring to press the lips of the first ring into tighter engagement with said member surfaces.
Claim 6
Dependent Claim
55 words
The combination of claim 3 in which said base inner and outer surfaces of said second ring include upper and lower portions with a transverse shoulder therebetween, said lips of said first ring have flat transverse faces at their free ends that engage said shoulders when said second ring is deformed by high fluid pressure.
References Cited (Backward Citations)
US2442687A
Cited
US3586341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |