Patent US3843281A successfully refreshed from Google Patents.
US3843281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casing of a fluid flow machine
Assignee: BBC Brown Boveri AG Switzerland
•
Filing: 1973-11-08
•
Granted: 1974-10-22
•
Expires: 1993-11-08
Abstract
Abstract A fluid flow machine of the double shell type, particularly a steam turbine, in which the inner casing having mounted therein a guide blade carrier and a bladed rotor is secured to the foundation, and the outer casing which surrounds and is spaced from the inner casing includes a frame therefor supported on the foundation by means of friction plates and being free to expand in any horizontal direction. Pairs of upper and lower straps are located around the frame for pivotal movement in horizontal planes, the upper and lower straps of each pair being pivotally connected at one end to upper and lower pivot points which are fixed in relation to the foundation, and being pivotally connected at the opposite ends thereof to the frame, thereby to guide the frame and outer casing in its horizontal movement on the foundation.
Inventors
- 👤 P Meylan
- 👤 H Hausmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:43
CPC Classifications
F; F16; F16M; F16M7/00; F01; F01D; F01D25/00; F01D25/28; F16M1/00; F16M1/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
144 words
In a fluid flow machine of the double shell type and which is anchored to a foundation, the machine comprising an inner casing having mounted therein a guide blade carrier and a bladed rotor, and an outer casing surrounding and spaced from said inner casing, the improvement wherein said outer casing includes a frame therefor supported on the foundation by means of friction plates and being free to expand in any horizontal direction, and pairs of upper and lower strap means located around said frame for movement in horizontal planes, the upper and lower strap means of each said pair being pivotally connected at one end to upper and lower pivot points which are fixed in relation to the foundation and being pivotally connected at the opposite ends thereof to said frame thereby to guide said frame and outer casing in its horizontal movement.
Claim 2
Dependent Claim
144 words
In a fluid flow machine of the double shell type and which is anchored to a foundation, the machine comprising an inner casing having mounted therein a guide blade carrier and a bladed rotor, and an outer casing surrounding and spaced from said inner casing, the improvement wherein said outer casing includes a frame therefor supported on the foundation by means of friction plates and being free to expand in any horizontal direction, and pairs of upper and lower strap means located around said frame for movement in horizontal planes, the upper and lower strap means of each said pair being pivotally connected at one end to upper and lower pivot points which are fixed in relation to the foundation and being pivotally connected at the opposite ends thereof to said frame thereby to guide said frame and outer casing in its horizontal movement.
Claim 3
Dependent Claim
37 words
A fluid flow machine as defined in claim 1 wherein said pairs of upper and lower strap means are connected at the said opposite ends thereof to shaft gland assemblies secured to opposite ends of the frame.
Claim 4
Dependent Claim
24 words
A fluid flow machine as defined in claim 1 wherein said pairs of upper and lower strap means are formed by cables or rods.
Claim 5
Dependent Claim
36 words
A fluid flow machine as defined in claim 1 wherein the pivot points for the ends of said strap means which are fixed in relation to the foundation are provided on columns upstanding from the foundation.
Claim 6
Dependent Claim
18 words
A fluid flow machine as defined in claim 4 wherein said columns form integral parts of the foundation.
Claim 7
Dependent Claim
22 words
A fluid flow machine as defined in claim 4 wherein said columns are constituted by separate structural parts secured to the foundation.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |