Internal surface treatment device for hollow engine shaft and the like

Patent metadata

Field	Value
Publication number	US-12090508-B2
Application number	US-202318153404-A
Country	US
Kind code	B2
Filing date	Jan 12, 2023
Priority date	Jan 12, 2023
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

A surface treatment device for applying a surface treatment to an inner surface of a hollow engine shaft includes a supply of a surface treatment agent and an elongated rod extending from a proximal end to a distal end. The rod has an inner passage extending from the proximal end to the distal end. The proximal end has an inlet fluidly coupled to the supply. The inner passage terminates at an outlet at the distal end. The rod is insertable inside the shaft. An input device is operable for controlling a delivery of a predetermined quantity of the surface treatment agent from the supply. An applicator disposed at the distal end of the rod adjacent the outlet is engageable with the inner surface of the shaft for applying, upon activation of the input device, the predetermined quantity of the surface treatment agent to the inner surface of the shaft.

First claim

The invention claimed is:

1. A surface treatment device for applying a surface treatment to an inner surface of a hollow engine shaft, comprising:
a supply of a surface treatment agent;
an elongated rod extending from a proximal end to a distal end, the elongated rod having an inner passage extending from the proximal end to the distal end, the proximal end having an inlet fluidly coupled to the supply of the surface treatment agent, the inner passage terminating at an outlet at the distal end, the elongated rod insertable inside the hollow engine shaft, the elongated rod having a handle at the proximal end for allowing an operator to handle the elongated rod;
an input device operable for controlling a delivery of a predetermined quantity of the surface treatment agent from the supply of the surface treatment agent, the input device comprising one or more control buttons integrated to the handle for allowing the operator to control the delivery of the surface treatment agent while handling the elongated rod; and
an applicator disposed at the distal end of the elongated rod adjacent the outlet, the applicator engageable with the inner surface of the hollow engine shaft for applying, upon activation of the input device, the predetermined quantity of the surface treatment agent from the supply of the surface treatment agent to the inner surface of the hollow engine shaft.

2. The surface treatment device as defined in claim 1 , wherein the input device is configured for delivering the predetermined quantity of the surface treatment agent based on an axial length of the hollow engine shaft, an inner diameter of the hollow engine shaft, and a thickness of the surface treatment agent to be applied to the inner surface of the hollow engine shaft.

3. The surface treatment device as defined in claim 1 , wherein the applicator is configured for applying a first portion of the predetermined quantity of the surface treatment agent to a first section of the hollow engine shaft and a second portion of the predetermined quantity of the surface treatment agent to a second section of the hollow engine shaft.

4. The surface treatment device as defined in claim 3 , wherein the one or more control buttons include a first button integrated to the handle and operable to activate the delivery of the first predetermined quantity of the surface treatment agent and a second button integrated to the handle and operable to activate the delivery of the second predetermined quantity of the surface treatment agent.

5. The surface treatment device as defined in claim 1 , further comprising a fluid pump in the supply of the surface treatment agent, the fluid pump configured to activate for a predetermined duration of time to deliver the predetermined quantity of the surface treatment agent to the applicator.

6. The surface treatment device as defined in claim 1 , further comprising a fluid pump in the supply of the surface treatment agent and a flow meter fluidly coupled between the supply of the surface treatment agent and the applicator, the flow meter operable to meter a flow of the surface treatment agent and deactivate the fluid pump upon the predetermined quantity of the surface treatment agent being delivered.

7. The surface treatment device as defined in claim 1 , further comprising one or more of a visual indicator and an auditory indicator operable to present a status of the delivery of the predetermined quantity of the surface treatment agent.

8. The surface treatment device as defined in claim 1 , wherein the outlet includes one or more nozzles fluidly coupled to the inner passage at the distal end.

9. The surface treatment device as defined in claim 1 , wherein the outlet is directly fluidly coupled to the applicator at the distal end for providing the surface treatment agent directly to the applicator.

10. The surface treatment device as defined in claim 1 , wherein the applicator is a sponge.

11. The surface treatment device as defined in claim 4 , wherein each of the first and second button is operatively connected to a timer for respectively timing first and second surface treatment sequences.

12. The surface treatment device as defined in claim 1 , wherein each of the one or more control button is operable to command the delivery of a predetermined quantity of surface treatment agent.

13. The surface treatment device as defined in claim 1 , further comprising a timer integrated to the handle.

14. The surface treatment device as defined in claim 1 , wherein a display screen is integrated to the handle, the display screen operable to display a status of a delivery procedure of the surface treatment agent.

15. The surface treatment device as defined in claim 1 , wherein the display screen is operatively connected to a timer.

16. The surface treatment device as defined in claim 1 , wherein the applicator includes a first and a second applicator axially spaced-apart by an axial gap, and wherein the outlet is disposed in the axial gap between the first applicator and the second applicator.

17. The surface treatment device as defined in claim 16 , wherein the outlet comprises a plurality of nozzles aimed at the first and second applicators, the nozzles operable to saturate the first and second applicators with the surface treatment agent.

Assignees

• Pratt & Whitney Canada

Inventors

• Marleau-Finley Julien

Classifications

• F05D2240/61

  Hollow · CPC title

• F05D2230/90

  Coating; Surface treatment · CPC title

• F02C7/30

  Preventing corrosion {or unwanted deposits} in gas-swept spaces · CPC title

• B64D27/10

  of gas-turbine type  (jet aircraft B64D27/16) · CPC title

• B05D7/22

  to internal surfaces, e.g. of tubes · CPC title