# US 5,348,209 A · Apparatus for brazing and installing honeycomb core seals > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,348,209 A - Document ID: US5348209A - Status: Granted - Kind: A - Application number: 08/063,037 - Filed: 1993-07-06 - Granted: 1994-09-20 - Earliest claimed: 1991-12-16 - Inventors: James R. Campbell - Web page: https://patentgrep.com/patent/US5348209A ## CPC - B23K 1/0014: {Brazing of honeycomb sandwich structures} - B23K 1/20: Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating - C23C 4/18: After-treatment - F01D 11/127: {with a deformable or crushable structure, e.g. honeycomb} - B23K 2101/02: Honeycomb structures - F05D 2250/283: honeycomb - B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM - C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04) - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS ## Abstract Apparatus for installation of honeycomb core seals in jet engine mounting rings, including spray deposition of brazing alloy in seals and establishment of compressive relationships between seal and ring prior to brazing of seal in ring. ## Claims ### Claim 1 In an apparatus for mounting a honeycomb core seal having a plurality of cells in a corresponding mounting ring, the combination of: a support for said seal; an applicator of brazing alloy located adjacent the perimeter of said seal for uniformly distributing brazing alloy in said cells at said perimeter; and means for causing relative rotation between said support and said applicator. ### Claim 2 (depends on 1) The apparatus of claim 1 in which said brazing alloy applicator is constituted by a spray nozzle for spraying brazing alloy into said cells. ### Claim 3 (depends on 2) The apparatus of claim 2, including sizing means for sizing said honeycomb seal to cause an interference fit between the OD of said seal and the ID of a mounting ring therefor. ### Claim 4 (depends on 1) The apparatus of claim 1, including means for sizing said honeycomb seal to increase the OD thereof to cause an interference fit between said OD and the ID of a mounting ring therefor. ### Claim 5 (depends on 1, 2, 3) The apparatus of claims 1, 2, 3, or 4, including seal installation means for installing said seal in said mounting ring, said installation means including compression means for momentarily reducing the OD of said seal to install said seal in said ring with an interference fit. ### Claim 6 (depends on 5) The apparatus of claim 5 in which said installation means includes drive means for driving said seal into said ring. ### Claim 7 (depends on 1) The apparatus of claim 1 in which said installation means includes motion limiting means for preventing said drive means from installing said seal in said ring beyond a predetermined location in said ring. ### Claim 8 (depends on 1) The apparatus of claim 1 which includes heat treatment means for causing liquefaction of said brazing alloy at the interface between said seal and said ring. ### Claim 9 In an apparatus for mounting a cylindrical honeycomb cell seal in a corresponding ring, the combination of: means for expanding said honeycomb seal to impart thereto an OD greater than the ID of said ring; means for depositing brazing alloy in the cells of said seal adjacent the OD of said seal; and heating means for reducing said alloy to a liquid phase to create a bond between the ID of said ring and the OD of said seal. ### Claim 10 (depends on 9) The apparatus of claim 9 in which said means for depositing brazing alloy includes a support for said seal and an applicator for depositing brazing alloy in said cells adjacent the perimeter of said seal. ### Claim 11 (depends on 9, 10) The apparatus of claims 9 or 10 which includes drive means for installing said seal in said ring and sizing means for temporarily reducing the OD of said seal to permit said drive means to install said seal in said ring. ### Claim 12 (depends on 11) The apparatus of claim 11 in which said drive means includes stop means for insuring the proper positioning of said seal within said ring. ### Claim 13 (depends on 9) The apparatus of claim 9 in which said means for depositing brazing alloy includes a rotatable support for said seal and an applicator for said brazing alloy located adjacent the perimeter of said seal for uniformly distributing brazing alloy in the cells of said seal adjacent said perimeter and means for causing relative rotation between said support and said applicator.