GEAR MADE FROM FIRST AND SECOND MATERIALS

• US 20160003339A1
• Filed: 03/13/2015
• Published: 01/07/2016
• Est. Priority Date: 07/02/2014
• Status: Abandoned Application

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: ROBERTS, Herbert Chidsey III, TAXACHER, Glenn Curtis
• Application Number:
  US14/657,446
• Publication Number:
  US 20160003339A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F16H 55/06 Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties coatings for lubrication F16H57/041; producing gear wheels from plastics or substances in a plastic state B29D15/00; heat treatment C21D9/32; electrolytic surface treatment C25D; heating by electromagnetic field H05B6/00
• CPC Class Codes: F16H 55/12 with body or rim assembled out of detachable parts
• CPC Class Codes: F16H 55/17 Toothed wheels worm wheels F16H55/22; chain wheels F16H55/30

Abstract

A gear set may include a gear having improved operating performance by including location specific strength and wear properties, more specifically the gear may include a hub that may be made from a first material and a plurality of gear teeth that may be made from a second material and mounted to the hub.

Claims

1. A gear, comprising:

a hub made from a first material; and

a plurality of gear teeth made from a second material and mounted to the hub;

wherein the first material is alternately ductile than the second material.

2. The gear of claim 1 wherein the first material comprises at least one of a metal, a metal matrix composite, a polymer matrix composite, or a polymer plastic.

3. The gear of claim 2 wherein the second material comprises a ceramic matrix composite, a ceramic, a metal, a metal matrix, a polymer matrix composite, or a polymer plastic.

4. The gear of claim 3 wherein the first material comprises the polymer matrix composite and the second material comprises the ceramic matrix composite.

5. The gear of claim 3 wherein the first material comprises the polymer matrix composite and the second material comprises the metal matrix composite.

6. The gear of claim 1 wherein the plurality of gear teeth comprises discrete sections of gear teeth mounted to the hub.

7. The gear of claim 6 wherein the plurality of gear teeth comprise a gear tooth ring that is mounted to the hub.

8. The gear of claim 1 wherein the plurality of gear teeth comprise a gear tooth ring that is mounted to the hub.

9. The gear of claim 8 wherein the gear tooth ring and the hub comprise corresponding pin holes.

10. The gear of claim 8 wherein the hub comprises bolting pucks for bolting the hub to a rotor assembly.

11. The gear of claim 8 wherein the second material comprises hoop-based fiber ply arcs or cross-ply based fiber ply tapes.

12. The gear of claim 1 wherein the first material comprises a hoop-based fiber-winding ply or radial based fiber ply tapes.

13. A gear, comprising:

a hub made from a polymer matrix composite material; and

discrete sections of gear teeth made from a second material and mounted to the hub to form a gear tooth ring;

wherein the polymer matrix composite material is alternately ductile than the second material.

14. The gear of claim 13 wherein the second material comprises a ceramic matrix composite, a ceramic, a metal, a metal matrix, a polymer matrix composite, or a polymer plastic.