Patent US902449A successfully refreshed from Google Patents.
Patent US3936057A successfully refreshed from Google Patents.
US3936057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft seals
Assignee: Blohm and Voss GmbH
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Filing: 1973-08-10
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Granted: 1976-02-03
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Expires: 1993-08-10
Abstract
Abstract A shaft seal of the kind in which at least two sealing rings are spaced at axially from one another on a rotatable shaft or on a bush fastened to the shaft is provided between the sealing rings with one or more deflectors which are spaced from the sealing rings and are engageable with the shaft or bush and act to deflect and whirl liquid lubricant circulating between the sealing rings so as to improve circulation of the lubricant and lengthen the life of the seals.
Inventors
- 👤 Gerhard W. H. Walter
- 👤 Gunter W. E. Pietsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:48
CPC Classifications
F; F16; F16N; F16N39/00; F16N39/02; F16N31/00; F16N31/02; Y; Y10; Y10S; Y10S277/00; Y10S277/93
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
106 words
A device for improving circulation of a liquid lubricant comprising: a. a rotatable member; b. two axially spaced sealing rings mounted on said rotatable member, said rotatable member and said sealing rings forming a chamber in which the lubricant flows; c. a stationary deflector element having one end resting on the periphery of said rotatable member, said one end being positioned between and spaced apart from said sealing rings to provide a flow path for lubricant between said deflector element and said sealing rings; and d. means, surrounding said rotatable member, for carrying said sealing rings and for supporting said deflector element between said sealing rings.
Claim 2
Independent Claim
106 words
A device for improving circulation of a liquid lubricant comprising: a. a rotatable member; b. two axially spaced sealing rings mounted on said rotatable member, said rotatable member and said sealing rings forming a chamber in which the lubricant flows; c. a stationary deflector element having one end resting on the periphery of said rotatable member, said one end being positioned between and spaced apart from said sealing rings to provide a flow path for lubricant between said deflector element and said sealing rings; and d. means, surrounding said rotatable member, for carrying said sealing rings and for supporting said deflector element between said sealing rings.
Claim 3
Dependent Claim
15 words
A device according to claim 1, wherein the stationary deflector element is a planar element.
Claim 4
Dependent Claim
19 words
A device according to claim 1, wherein the stationary deflector element comprises a plurality of separate juxtaposed planar elements.
Claim 5
Dependent Claim
24 words
A device according to claim 1, wherein the stationary deflector element is arranged to form an angle with a radius of the rotatable member.
Claim 6
Dependent Claim
40 words
A device according to claim 1, wherein the stationary deflector element includes a pair of arms in the form of an inverted V, each of the arms being arranged to form an angle with a radius of the rotatable member.
Claim 7
Dependent Claim
21 words
A device according to claim 1, wherein the stationary deflector element is provided with channels for the passage of liquid lubricant.
Claim 8
Dependent Claim
25 words
A device according to claim 1, wherein the channels are formed as grooves at the end of the stationary deflector element, contacting the rotatable member.
Claim 9
Dependent Claim
25 words
A device according to claim 1, wherein the stationary deflector element is supported for adjustment in the radial direction in relation to the rotatable member.
Claim 10
Dependent Claim
25 words
A device according to claim 1, wherein adjustable spring means is provided for urging the stationary deflector element against the periphery of the rotatable member.
Claim 11
Dependent Claim
16 words
A device according to claim 1, wherein the stationary deflector element is of generally hexagonal cross-section.
Claim 12
Dependent Claim
19 words
A device according to claim 1, wherein the stationary deflector element has a cross-section generally that of a parallelogram.
Claim 13
Dependent Claim
16 words
A device according to claim 1, wherein the stationary deflector element is of generally circular cross-section.
Claim 14
Dependent Claim
27 words
A device according to claim 1, wherein the statioary deflector element comprises at least two partial elements of triangular cross-section which are spaced apart from one another.
Claim 15
Dependent Claim
37 words
A device according to claim 1, wherein the stationary deflector element comprises at least two partial elements of rectangular cross-section which are spaced apart from one another and which are disposed at an angle to one another.
Claim 16
Dependent Claim
18 words
A device according to claim 11, wherein the stationary deflector element tapers from bottom to top in cross-section.
Claim 17
Dependent Claim
28 words
A device according to claim 1, wherein the stationary deflector element comprises at least two partial elements of generally semicircular cross-section which are spaced apart from one another.
Claim 18
Dependent Claim
23 words
A device according to claim 1, wherein the stationary deflector element itself is provided with a passage for connection to a cooling device.
Claim 19
Dependent Claim
31 words
A device according to claim 1, wherein a plurality of stationary deflector elements are so supported as to be distributed around the periphery of the rotatable member between the sealing rings.
Claim 20
Dependent Claim
13 words
A device according to claim 1, wherein the rotatable member comprises a shaft.
Claim 21
Dependent Claim
31 words
A device according to claim 1, wherein the rotatable member comprises a shaft and a bush mounted on said shaft, said inner end of said deflector element resting on said bush.
Claim 22
Dependent Claim
18 words
A device according to claim 1, wherein the stationary deflector element is of generally oval shape in cross-section.
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) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |