IP Library Granted Patent US 12,390,894
Granted Patent B2
US 12,390,894 · App. 18/589,234 · Granted Aug 19, 2025

Piston seal assembly guards and inserts for seal groove

Inventor: Patrick Bowler (Westfield, MA)
Assignee: RTX Corporation
B23P6/007F01D25/183
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Quick Facts
Patent No.
US 12,390,894
App. No.
18/589,234
Granted
Aug 19, 2025
Kind
B2
Abstract

A method of repairing a piston seal assembly comprises removing worn material from a piston seal groove to generate a worked seal groove, applying a groove buildup member to the worked seal groove, and disposing a seal member proximate the groove buildup member.

Claims (3)

1. An article of manufacture, comprising:

a groove buildup member configured to be secured to a worked seal groove of a piston seal assembly, wherein the groove buildup member is a guard type member, wherein the worked seal groove is generated between a forward seal wall and an aft seal wall of the piston seal assembly, wherein the forward seal wall and the aft seal wall extend radially from a case comprising the piston seal assembly, wherein after removing worn material, one of the seal walls comprises a first thickness and the other seal wall comprises a second thickness, wherein the first thickness is smaller relative the second thickness, wherein the guard type member comprises an inner guard and an outer guard joined at a distal end by an orthogonal web, wherein the outer guard is shorter relative the inner guard, wherein the inner guard is disposed within the worked seal groove, wherein the guard type member is configured to interface with the seal wall having the first thickness, wherein the orthogonal web of the guard type member is disposed over the seal wall having the first thickness.

2. The article of manufacture of claim 1 , wherein the groove buildup member comprises circumferentially segmented sections.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 28, 2024
From: BOWLER, PATRICK
To: RAYTHEON TECHNOLOGIES CORPORATION
Reel/Frame 066586/0021 →
CHANGE OF NAME Recorded Feb 28, 2024
From: RAYTHEON TECHNOLOGIES CORPORATION
To: RTX CORPORATION
Reel/Frame 066693/0364 →
Continuity (3)
Division 17893983 · Aug 23, 2022
Division 16883442 · May 26, 2020
Related Publication 20240198462A1 · Jun 20, 2024
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