Pump sleeve for integrated drive generator

Patent metadata

Field	Value
Publication number	US-10962005-B2
Application number	US-201715808942-A
Country	US
Kind code	B2
Filing date	Nov 10, 2017
Priority date	Nov 10, 2017
Publication date	Mar 30, 2021
Grant date	Mar 30, 2021

Abstract

A pump sleeve for an inversion pump in an integrated drive generator has a pump sleeve body extending between a first end and a second end, the first end being at a location adjacent an enlarged endplate. The body extends to the second end with a generally cylindrical body portion having a bore of an inner diameter from the first end to the second end, and between the first and second ends for a distance. A ratio of the first distance to the inner diameter being is 1.8 and 2.0. In addition, an integrated drive generator is disclosed as is a method of replacing an accessory drive gear in an integrated drive generator.

First claim

The invention claimed is:

1. A pump sleeve for an inversion pump in an integrated drive generator comprising:
a pump sleeve body extending between a first end and a second end, said first end being at a location adjacent an enlarged endplate, and said body extending to said second end with a generally cylindrical body portion having a bore of an inner diameter from said first end to said second end, and extending between said first and second ends for a first distance, and a ratio of said first distance to said inner diameter being between 1.8 and 2.0;
wherein said pump sleeve having two circumferentially spaced windows to provide fluid ports, and each of said windows extending for a second distance measured parallel to a central axis of said cylindrical portion, and a ratio of said second distance to said inner diameter being between 0.5 and 0.7;
wherein a ratio of said second distance to said first distance being between 0.25 and 0.39; and
wherein said windows extend between two circumferential ends and one of said windows extending for between 90 and 110 degrees in said circumferential distance and a second of said windows extending for between 99 and 119 degrees in said circumferential distance.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Hochstetler Derek R
• Martin Ted A
• Johnson Duane C
• Lemmers Jr Glenn C

Classifications

• F04B53/16 Primary

  Casings; Cylinders; Cylinder liners or heads; Fluid connections · CPC title

• F04C2/00

  Rotary-piston machines or pumps (with non-parallel axes of co-operating members F04C3/00; with the working-chamber walls at least partly resiliently deformable F04C5/00; with fluid ring or the like F04C7/00; rotary-piston pumps specially adapted for elastic fluids F04C18/00; rotary-piston machines or pumps in which the working-fluid is exclusively displaced by, or exclusively displaces, one or more reciprocating pistons F04B) · CPC title

• F01C21/106

  with a radial surface, e.g. cam rings · CPC title

• F01D15/12

  Combinations with mechanical gearing (driven by multiple engines F01D13/00) · CPC title

• F04C2/3442

  the surfaces of the inner and outer member, forming the working space, being surfaces of revolution · CPC title