§
PatentCue
Patent Intelligence
Join Waitlist Sign In
← Back to Patent Explorer
US3698743A Expired / Lapsed US ⏱️ 0.0 years remaining

Combustion liner joint

Assignee: Avco Corp
•
Filing: 1971-01-28
•
Granted: 1972-10-17
•
Expires: 1991-01-28
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A combustion chamber liner is comprised of two telescoping sections, the leading edge of the downstream section overlapping the trailing edge of the upstream section. The end of the downstream section is provided with a plurality of peripherally spaced inwardly directed bosses. The inner peripheral surface of each of the bosses is grooved to accept a metal ring. The end of the upstream section is provided with a peripherally stepped surface having a supplemental groove, one end of which is open. The open end is closed by a spring snap ring which permits a sliding motion in only one direction. The two telescoping sections are joined by seating the ring in the groove in the downstream bosses and sliding the assembly over the snap ring, which prevents further movement between the sections. When cool, the dimensions of the upstream and downstream sections are such that there is a loose connection between the sections. However, the upstream section is subjected to more heat than the downstream section, causing it to expand to provide a tight fit.

Inventors

  • 👤 Ervin J Sweet
  • 👤 Brian W Doyle
  • 👤 Joseph Rygelis

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 17:12
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/02; F23R3/04; F23R3/06; F23R3/08

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 186 words
A combustor having upstream and downstream radially spaced telescoping sections, an end of said downstream section overlapping an end of said upstream section, the outer surface of the end of the upstream section being surrounded by the inner surface of the end of the downstream section; a plurality of peripherally spaced bosses on one of said surfaces, the spacing between said bosses providing means for admitting cooling air from outside the combustor to the inside thereof, the direction of flow being from the upstream section to the downstream section; a groove in each of said bosses, said grooves being peripherally aligned; a step on said other surface, said step having a groove open at one side, said groove opposing said peripherally aligned grooves; a lock ring seated in said peripherally aligned grooves and said groove on said step for connecting said sections; and a one-way spring snap ring affixed to the periphery of the surface of said section carrying said step and adjacent the open side of said groove on said step, said one-way snap ring preventing the removal of said ring through said open side.
Claim 2
Dependent Claim 186 words
A combustor having upstream and downstream radially spaced telescoping sections, an end of said downstream section overlapping an end of said upstream section, the outer surface of the end of the upstream section being surrounded by the inner surface of the end of the downstream section; a plurality of peripherally spaced bosses on one of said surfaces, the spacing between said bosses providing means for admitting cooling air from outside the combustor to the inside thereof, the direction of flow being from the upstream section to the downstream section; a groove in each of said bosses, said grooves being peripherally aligned; a step on said other surface, said step having a groove open at one side, said groove opposing said peripherally aligned grooves; a lock ring seated in said peripherally aligned grooves and said groove on said step for connecting said sections; and a one-way spring snap ring affixed to the periphery of the surface of said section carrying said step and adjacent the open side of said groove on said step, said one-way snap ring preventing the removal of said ring through said open side.
Claim 3
Dependent Claim 31 words
The invention as defined in claim 1 wherein said spring snap ring is inclined toward said opening and depressible to permit the passage of said lock ring in onLy one direction.
Claim 4
Dependent Claim 31 words
The invention as defined in claim 1 wherein said bosses are on said inner surface of said downstream section, and said step is on said outer surface of said upstream section.
Claim 5
Dependent Claim 51 words
The invention as defined in claim 1 wherein said locking ring is dimensioned to fit loosely in said grooves without sufficient clearance to permit separation of the sections under normal cool non-operating conditions, said fit becoming tight under normal hot operating conditions due to the difference in expansion of said sections.
Claim 6
Dependent Claim 20 words
The invention as defined in claim 1 wherein said telescoping sections form an expansion area immediately downstream of said bosses.

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) 1975-10-17 1976-04-17 1976-10-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-10-17 1980-04-17 1980-10-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-10-17 1984-04-17 1984-10-17 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag