Patent US4009969A successfully refreshed from Google Patents.
US4009969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supporting ring for stator vanes in an axial compressor
Assignee: CKD Praha Oborovy Podnik
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Filing: 1975-09-26
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Granted: 1977-03-01
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Expires: 1995-09-26
Abstract
Abstract A supporting ring for stator vanes in an axial compressor. The supporting ring permits an adjustment of the angular position of the stator vanes. The adjustment is carried out by removing the stator body while the machine is at standstill. The supporting ring is provided with recesses which are defined by an elastic wall which also defines the bores in which the stator vanes are mounted. Clamping bolts are provided in the elastic wall and by tightening these clamping bolts the stator vanes are held in a predetermined position.
Inventors
- 👤 Vaclav Kadera
- 👤 Jiri Penkava
- 👤 Miloslav Vondruska
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:29
CPC Classifications
F; F01; F01D; F01D9/00; F01D9/02; F01D9/04; F01D9/042; F04; F04D; F04D29/00; F04D29/40; F04D29/52; F04D29/54; F04D29/56
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
169 words
A support structure for stator vanes of an axial compressor adapted to be mounted in the stator case of the compressor, comprising in combination, at least one supporting ring having a plurality of bores located along a row on a circumference of said ring, and at least one first annular recess traversing said plurality of bores in said ring; a plurality of studs adjustably mounted in said bores and having stator vanes extending therefrom into the flow-through space of the compressor, said first annular recess forming elastic wall means in said supporting ring for clampingly supporting said studs in said supporting ring, said supporting ring having a ring portion and a cylindrical fin portion, said annular recess extending radially inwardly from the radially outer periphery of said ring portion to the radially outer periphery of said cylindrical fin portion, and said ring portion having a second annular recess which extends parallel to the axis of the compressor and having a diameter corresponding substantially to the radial thickness of said
Claim 2
Dependent Claim
169 words
A support structure for stator vanes of an axial compressor adapted to be mounted in the stator case of the compressor, comprising in combination, at least one supporting ring having a plurality of bores located along a row on a circumference of said ring, and at least one first annular recess traversing said plurality of bores in said ring; a plurality of studs adjustably mounted in said bores and having stator vanes extending therefrom into the flow-through space of the compressor, said first annular recess forming elastic wall means in said supporting ring for clampingly supporting said studs in said supporting ring, said supporting ring having a ring portion and a cylindrical fin portion, said annular recess extending radially inwardly from the radially outer periphery of said ring portion to the radially outer periphery of said cylindrical fin portion, and said ring portion having a second annular recess which extends parallel to the axis of the compressor and having a diameter corresponding substantially to the radial thickness of said
Claim 3
Dependent Claim
23 words
The support structure as set forth in claim 1, including a plurality of transverse clamping bolts operatively mounted in said elastic wall means
Claim 4
Dependent Claim
36 words
The support structure as set forth in claim 1, wherein safety rings are mounted on said studs for securing them against radially inward motions and collars are mounted on said studs for securing them against radially
Claim 5
Dependent Claim
13 words
The support structure as set forth in claim 1, wherein said bores extend
Claim 6
Dependent Claim
23 words
The support structure as set forth in claim 1, wherein said studs have transverse bores adapted to receive adjusting pins for adjusting and
Claim 7
Dependent Claim
20 words
The support structure as set forth in claim 1, wherein said plurality of bores are equidistantly spaced from each other.
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) | 1980-02-29 | 1980-08-30 | 1981-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-29 | 1984-08-30 | 1985-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-29 | 1988-08-30 | 1989-03-01 | $7700.00 | Window Closed / Lapsed |