Patent US4716557A successfully refreshed from Google Patents.
Patent US3744930A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3744930A Expired / Lapsed US ⏱️ 0.0 years remaining

Blade disc structure for turbomachines

Assignee: Elliott Turbomachinery Co Inc
•
Filing: 1972-03-02
•
Granted: 1973-07-10
•
Expires: 1992-03-02
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract The invention has to do with a blade disc structure for turbo rotors, and more particularly, with the sealing ring structure therefor. The blade disc is formed with a peripheral cylindrical rim surface and an outwardly extending rib portion formed intermediate the sides of the rim. The root portions of the blades are fixedly mounted in the rib portion of the disc. The cylindrical peripheral rim surface of the disc is formed with a circumferentially extending shoulder spaced axially from each side of the rib portion. The rib portion is formed, at each side, with a circular shoulder spaced concentrically outwardly from the rim portion. Sealing ring members are positioned between the rim shoulders and each side of the rib and having a snug fit therewith. Caulking ring sections are positioned between the periphery of the sealing ring members and the shoulder formed in the rib portion. The caulking ring sections have snug engagement with the periphery of the sealing ring structure and the inner surface of the shoulder formed on the rib portion. The caulking ring sections are retained in place, preferably by peening areas in the sides of the rib portion over the outer surface of the caulking ring sections.

Inventors

  • 👤 A Carroll

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 11:39
CPC Classifications
F; F01; F01D; F01D11/00; F01D11/02; F01D5/00; F01D5/30; F01D5/3007; F01D5/3015

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 190 words
A blade disc structure for turbomachine rotors comprising a blade disc having a cylindrical rim surface, a rib portion extending circumferentially about said rim surface and radially outwardly therefrom, said rib portion being positioned intermediate the sides of said rim portion, a circular series of blades fixedly mounted in said rib portion and extending radially outwardly therefrom, said rib portion being formed at each side thereof with a circumferentially extending shoulder spaced in outward concentric relation to said rim portion, said rim portion being formed with a circumferentially extending shoulder spaced axially from each side of said rib portion, a sealing ring structure encircling said rim portion at each side of said rib portion, said sealing ring structures being positioned between and having engagement with a rim shoulder and said rib portion, the periphery of said sealing ring structures being spaced inwardly from said shoulders in said rib portion, a caulking ring structure encircling each of said sealing ring structures, said caulking ring structures being dimensioned for tight engagement with the periphery of said sealing ring structure and said rib shoulder and means restraining displacement of said caulking ring structures.
Claim 2
Dependent Claim 190 words
A blade disc structure for turbomachine rotors comprising a blade disc having a cylindrical rim surface, a rib portion extending circumferentially about said rim surface and radially outwardly therefrom, said rib portion being positioned intermediate the sides of said rim portion, a circular series of blades fixedly mounted in said rib portion and extending radially outwardly therefrom, said rib portion being formed at each side thereof with a circumferentially extending shoulder spaced in outward concentric relation to said rim portion, said rim portion being formed with a circumferentially extending shoulder spaced axially from each side of said rib portion, a sealing ring structure encircling said rim portion at each side of said rib portion, said sealing ring structures being positioned between and having engagement with a rim shoulder and said rib portion, the periphery of said sealing ring structures being spaced inwardly from said shoulders in said rib portion, a caulking ring structure encircling each of said sealing ring structures, said caulking ring structures being dimensioned for tight engagement with the periphery of said sealing ring structure and said rib shoulder and means restraining displacement of said caulking ring structures.
Claim 3
Dependent Claim 19 words
A blade disc structure as set forth in claim 1 wherein said sealing ring structure consists of semicircular members.
Claim 4
Dependent Claim 22 words
A blade disc structure as set forth in claim 1 wherein said caulking ring structure consists of a plurality of arcuate members.
Claim 5
Dependent Claim 25 words
A blade disc structure as set forth in claim 1 wherein said rib portion is peened over the outer surface of said caulking ring structure.
Claim 6
Dependent Claim 21 words
A blade disc structure as set forth in claim 1 wherein said shoulders on said rib portion are formed integral therewith.
Claim 7
Dependent Claim 21 words
A blade disc structure as set forth in claim 1 wherein said shoulders on said rib portion are formed integral therewith.
Claim 8
Dependent Claim 35 words
A blade disc structure as set forth in claim 1 wherein said shoulders on said rim portion are formed by circumferentially extending recesses formed in said rim portion at opposite sides of said rib portion.
Claim 9
Dependent Claim 30 words
A blade disc structure as set forth in claim 1 wherein said shoulders on said rib portion are formed by circular recesses in the side surfaces of said rib portion.

References Cited (Backward Citations)

US2773667A Cited
US2974924A Cited
US3096074A Cited
US3300179A Cited
US3656865A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-07-09 1977-01-08 1977-07-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-07-09 1981-01-08 1981-07-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-07-09 1985-01-08 1985-07-10 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag