US3658349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damping device for a mechanical fluid seal
Assignee: EG&G Sealol Inc
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Filing: 1970-12-03
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Granted: 1972-04-25
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Expires: 1990-12-03
Abstract
Abstract This specification discloses a damping device for a bellows employed in a mechanical fluid seal. The seal comprises a mating and a sealing ring. One of said rings is anchored to a stationary housing with the other ring being drivably connected to a shaft rotatably mounted in the housing. A bellows is employed to urge one ring into engagement with the other ring. This invention relates to damping means and more specifically to means for removing the vibrations, dancing and gathering of the convolutions in a bellows employed in a mechanical fluid seal.
Inventors
- 👤 Justus Bickford Stevens
- 👤 Walter William Meyer
- 👤 John Sinclaire Howland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:44
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36; F16J15/363; F16J15/366; Y; Y10; Y10S; Y10S277/00; Y10S277/916
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
234 words
A vibration damping device for a mechanical fluid seal comprising a housing provided with a housing chamber, a shaft rotatably mounted in said housing, a mating ring having a bore surrounding said shaft, means fastening said mating ring to said housing, an anchor ring drivably mounted on said shaft, a sealing ring, and an extensible bellows having an inside chamber and located in said housing chamber and mounted about said shaft and having one end secured to said anchor ring and the other end secured to said sealing ring, whereby, said expansible bellows yieldingly urges said sealing ring into engagement with said mating ring to provide a fluid seal, that improvement consisting of said sealing ring having an unrestricted clearance about said shaft, said sealing ring being provided with a skirt-like flange, a gasket, means securing said gasket to said skirt-like fLange, said gasket and said mating ring being connected to said sealing ring and said housing respectively against radial movement in at least one direction, said gasket having a bore of a diameter having a restricted clearance about said shaft, a recess opening in said bore to provide a fluid passageway through said gasket, said gasket being interposed between said sealing ring and mating ring for engagement with said mating ring and constituting part of the sealing ring, said restricted clearance restricting the amplitudes of vibration of said sealing ring about said shaft.
Claim 2
Dependent Claim
234 words
A vibration damping device for a mechanical fluid seal comprising a housing provided with a housing chamber, a shaft rotatably mounted in said housing, a mating ring having a bore surrounding said shaft, means fastening said mating ring to said housing, an anchor ring drivably mounted on said shaft, a sealing ring, and an extensible bellows having an inside chamber and located in said housing chamber and mounted about said shaft and having one end secured to said anchor ring and the other end secured to said sealing ring, whereby, said expansible bellows yieldingly urges said sealing ring into engagement with said mating ring to provide a fluid seal, that improvement consisting of said sealing ring having an unrestricted clearance about said shaft, said sealing ring being provided with a skirt-like flange, a gasket, means securing said gasket to said skirt-like fLange, said gasket and said mating ring being connected to said sealing ring and said housing respectively against radial movement in at least one direction, said gasket having a bore of a diameter having a restricted clearance about said shaft, a recess opening in said bore to provide a fluid passageway through said gasket, said gasket being interposed between said sealing ring and mating ring for engagement with said mating ring and constituting part of the sealing ring, said restricted clearance restricting the amplitudes of vibration of said sealing ring about said shaft.
Claim 3
Dependent Claim
250 words
A vibration damping device for a mechanical fluid seal comprising a housing provided with a housing chamber, a shaft rotatably mounted in said housing, a mating ring having a bore surrounding said shaft, means fastening said mating ring to said housing, an anchor ring drivably mounted on said shaft, a sealing ring, and an extensible bellows having an inside chamber and located in said housing chamber and mounted about said shaft and having one end secured to said anchor ring and the other end secured to said sealing ring, whereby said expansible bellows yieldingly urges said sealing ring toward said mating ring, that improvement consisting of said sealing ring having an unrestricted clearance about said shaft, said sealing ring being provided with a skirt-like flange, a gasket, means securing said gasket to said skirt-like flange, whereby, said gasket engages said mating ring, said gasket having a bore of a diameter having an unrestricted clearance about said shaft, and a disc-like washer having a central opening and a recess connected to said central opening, said central opening being of a diameter about said shaft to provide a restricted passageway between said shaft and central opening, and means fastening said disc-like washer between said sealing ring and said gasket, to form a unitary structure, said washer and said mating ring being connected to said sealing ring and said housing against radial movement at least in one direction: said restricted passageway restricting the amplitudes of vibration of said sealing ring about said shaft.
Claim 4
Dependent Claim
250 words
A vibration damping device for a mechanical fluid seal comprising a housing provided with a housing chamber, a shaft rotatably mounted in said housing, a mating ring having a bore surrounding said shaft, means fastening said mating ring to said housing, an anchor ring drivably mounted on said shaft, a sealing ring, and an extensible bellows having an inside chamber and located in said housing chamber and mounted about said shaft and having one end secured to said anchor ring and the other end secured to said sealing ring, whereby said expansible bellows yieldingly urges said sealing ring toward said mating ring, that improvement consisting of said sealing ring having an unrestricted clearance about said shaft, said sealing ring being provided with a skirt-like flange, a gasket, means securing said gasket to said skirt-like flange, whereby, said gasket engages said mating ring, said gasket having a bore of a diameter having an unrestricted clearance about said shaft, and a disc-like washer having a central opening and a recess connected to said central opening, said central opening being of a diameter about said shaft to provide a restricted passageway between said shaft and central opening, and means fastening said disc-like washer between said sealing ring and said gasket, to form a unitary structure, said washer and said mating ring being connected to said sealing ring and said housing against radial movement at least in one direction: said restricted passageway restricting the amplitudes of vibration of said sealing ring about said shaft.
Claim 5
Dependent Claim
28 words
A vibration damping device for the mechanical fluid seal of claim 2, in which, said disc-like washer has a width of between 0.001 and 0.020 of an inch.
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) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |