US3743302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing arrangement
Assignee: Klein Schanzlin and Becker AG
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Filing: 1971-12-29
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Granted: 1973-07-03
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Expires: 1991-12-29
Abstract
Abstract A rotary shaft is surrounded by a sleeve which is rotatable with it and which is in turn surrounded over all but an axial end portion by an inner annular housing. The axial end portion is provided with an external circumferential groove and the inner annular housing has in the region of this groove a radially directed outward flange which is connected with an outer annular housing surrounding the inner annular housing. A circlip is accommodated in a circumferential recess provided in the shaft adjacent an end of the sleeve and the circlip engages the sleeve to prevent its axial displacement with reference to the shaft. Temporary coupling devices are provided on the inner annular housing and can be moved into and out of the groove in the sleeve to thereby temporarily and releasably couple the inner annular housing with the sleeve.
Inventors
- 👤 M Bach
- 👤 F Urban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:58
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3464
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
159 words
An arrangement of the character described, comprising a rotor; sliding ring seal means including a sleeve surrounding a portion of said rotor rotatable therewith and having a main portion and an end portion which is provided with an external circumferential groove; an inner annular housing surrounding said main portion and having an outwardly directed radial flange in the region Of said end portion; an outer annular housing surrounding said inner annular housing and having an annular end face axially juxtaposed with said flange; connecting means for releasably connecting said flange with said outer annular housing; retaining means for retaining said sleeve against axial movement relative to said rotor and said inner annular housing; and temporary coupling means carried by said inner annular housing in the region of said flange thereof and movable to and from a position in which it extends into said groove for thereby temporarily coupling said inner annular housing with said sleeve against relative axial displacement.
Claim 2
Dependent Claim
159 words
An arrangement of the character described, comprising a rotor; sliding ring seal means including a sleeve surrounding a portion of said rotor rotatable therewith and having a main portion and an end portion which is provided with an external circumferential groove; an inner annular housing surrounding said main portion and having an outwardly directed radial flange in the region Of said end portion; an outer annular housing surrounding said inner annular housing and having an annular end face axially juxtaposed with said flange; connecting means for releasably connecting said flange with said outer annular housing; retaining means for retaining said sleeve against axial movement relative to said rotor and said inner annular housing; and temporary coupling means carried by said inner annular housing in the region of said flange thereof and movable to and from a position in which it extends into said groove for thereby temporarily coupling said inner annular housing with said sleeve against relative axial displacement.
Claim 3
Dependent Claim
39 words
An arrangement as defined in claim 1, said retaining means including a circlip lodged in a circumferential groove provided in said rotor adjacent an axial end of said sleeve, said circlip being adapted for engagement with said axial end.
Claim 4
Dependent Claim
34 words
An arrangement as defined in claim 1, said temporary coupling means comprising at least one arm pivotally mounted on an end face of said inner annular housing for movement to and from said position.
Claim 5
Dependent Claim
13 words
An arrangement as defined in claim 3, said arm being an eccenter arm.
Claim 6
Dependent Claim
40 words
An arrangement as defined in claim 3, said inner annular housing having one end provided with an axially directed opening at said end portion and including a removable cover for closing said opening, said arm being mounted on said cover.
Claim 7
Dependent Claim
68 words
An arrangement as defined in claim 5, said outer annular housing having a transverse end wall axially spaced from said one end and in the region of the other end of said inner annular housing; and further comprising stationary sealing means in the region of said transverse end wall and operative for sealing the interior of said housing with reference to the ambient atmosphere at least at times.
Claim 8
Dependent Claim
53 words
An arrangement as defined in claim 6, said stationary sealing means comprising a hollow annular member of elastically distendable material surrounding a portion of said rotor with clearance, and distending means communicating with the interior of said hollow annular member for distending the latter into sealing engagement with said portion of said rotor.
Claim 9
Dependent Claim
73 words
An arrangement as defined in claim 7, saud transverse end wall having an aperture through which said rotor extends and which is bounded by a radially inwardly directed face provided with an inner circumferential groove, said hollow annular member being seated in said inner circumferential groove; and wherein said distending means comprises a passage communicating with the interior of said hollow annular member and adapted to communicate with a source of pressurized fluid.
Claim 10
Dependent Claim
18 words
An arrangement as defined in claim 6, said stationary sealing means comprising a pair of cooperating sealing rings.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |