Starter generator
OwnerJohn W. Leslieinventor
Life of this patent
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Abstract
A starter generator for a helicopter is disclosed. The starter generator has a body having a first end and a second end and a side wall between said ends. The side wall has a plurality of vents adjacent the first end of the body. The first end of the body has an end bell connected thereto and a commutator head assembly connected to the second end. A fan cover assembly is connected to the commutator head assembly. The end bell has a bearing liner with a rim extending therefrom toward the first end of the body such that the rim does not block any portion of a vent in the body.
Claims23
In a starter generator having a body said body having a first end and a second end and a side wall between said ends, said side wall having a plurality of vents adjacent the first end of said body, said first end having an end bell connected thereto and a commutator head assembly connected to said second end, and a fan cover assembly connected to said commutator head assembly, the improvement comprising said end bell having a bearing liner, said bearing liner having a rim extending therefrom toward said first end of said body such that said rim does not block any portion of a vent in said body, said end bell being adapted to be connected to a helicopter body.
In a starter generator having a body said body having a first end and a second end and a side wall between said ends, said side wall having a plurality of vents adjacent the first end of said body, said first end having an end bell connected thereto and a commutator head assembly connected to said second end, and a fan cover assembly connected to said commutator head assembly, the improvement comprising said end bell having a bearing liner, said bearing liner having a support extending therefrom toward said first end of said body such that said support does not block any portion of a vent in said body, said end bell being adapted to be connected to a helicopter body.
10 A starter generator according to claim 1 wherein the starter generator has one or more brushes that comprise the following percentages by weight
- Boron <0.002
- Iron <0.015
- Copper <0.002
- Molybdenum <0.002
- Magnesium <0.02
- Silicon <0.015
- Silver <0.60
- Aluminum <0.002
- Calcium <0.15
- Phosphorous <0.02
- Sulfur <0.02
- Potassium <0.02
- Nickel <0.002
- Cobalt <0.002
- Manganese <0.002
- Titanium <0.002
- Vanadium <0.002
- Zinc <0.02
- Lead <0.02
- Lithium <2.0
- Lithium carbonate <5.0
- and wherein the remainder is carbon.
A starter generator having one or more brushes wherein the brushes comprise the following percentages by weight:
- Boron <0.002
- Iron <0.015
- Copper <0.002
- Molybdenum <0.002
- Magnesium <0.02
- Silicon <0.015
- Silver <0.60
- Aluminum <0.002
- Calcium <0.15
- Phosphorous <0.02
- Sulfur <0.02
- Potassium <0.02
- Nickel <0.002
- Cobalt <0.002
- Manganese <0.002
- Titanium <0.002
- Vanadium <0.002
- Zinc <0.02
- Lead <0.02
- Lithium <2.0
- Lithium carbonate <5.0
- and wherein the remainder is carbon, said starter generator being adapted for use in a helicopter.
A starter generator comprising
- a body having a first end and a second end having an end bell at said first end,
- a commutator head assembly at said second end and
- a fan cover assembly on said commutator head assembly opposite said body said starter generator being adapted to be connected to a helicopter, and
- wherein there are one or more brushes in the starter generator and wherein the pressure exerted by a brush spring on a commutator is in the range of about 90 to 150 oz./sq. in.
21 The starter generator according to claim 18 having a horsepower greater than two.
The starter generator according to claim 21 having a horsepower greater than four.
Dependencies are inferred from the claim text.