IDLER GEAR FOR A GENERATOR
First Claim
1. A gear set for a generator, comprising:
- a first gear having a first set of involute teeth circumferentially located about a center axis of rotation; and
a second gear axially spaced from the first gear and coupled with the first gear such that the first gear and the second gear co-rotate, the second gear having a second set of involute teeth circumferentially located about the center axis of rotation, each tooth of the first set of involute teeth and the second set of involute teeth including an involute surface that extends between a tooth tip and a tooth base, each involute surface including at least reference points A-D thereon with reference point A near the base, reference point D near the tip, reference point B between reference points A and D, and reference point C between reference points B and D, the reference points A-D having respective roll angles, ε
A-D, between a corresponding first line that is perpendicular to the involute surface at the given reference point A-D and a second line that is tangent at a reference point that lies on a terminal end of the involute surface at the tooth base to a reference base circle having a center origin at the center axis, for a diametrically smaller one of the first gear and the second gear the roll angle ε
A is 1.51°
-3.51°
, the roll angle ε
B is 7.64°
-9.64°
, the roll angle ε
C is 26.03°
-28.03°
, and the roll angle ε
D is 32.16°
-34.16°
, and for a diametrically larger one of the first gear and the second gear the roll angle ε
A is 15.02°
-17.02°
, the roll angle ε
B is 16.7°
-18.7°
, the roll angle ε
C is 21.73°
-23.73°
, and the roll angle ε
D is 23.41°
-25.41°
.
1 Assignment
0 Petitions
Accused Products
Abstract
A gear set for a generator includes a first gear having a first set of involute teeth and a second gear having a second set of involute teeth circumferentially located about a center axis of rotation. Each set of involute teeth includes respective roll angles, εA-D. For a diametrically smaller one of the first gear and the second gear the roll angle εA is 1.51°-3.51°, the roll angle εB is 7.64°-9.64°, the roll angle εC is 26.03°-28.03°, and the roll angle εD is 32.16°-34.16°, and for a diametrically larger one of the first gear and the second gear the roll angle εA is 15.02°-17.02°, the roll angle εB is 16.7°-18.7°, the roll angle εC is 21.73°-23.73°, and the roll angle εD is 23.41°-25.41°.
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Citations
18 Claims
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1. A gear set for a generator, comprising:
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a first gear having a first set of involute teeth circumferentially located about a center axis of rotation; and a second gear axially spaced from the first gear and coupled with the first gear such that the first gear and the second gear co-rotate, the second gear having a second set of involute teeth circumferentially located about the center axis of rotation, each tooth of the first set of involute teeth and the second set of involute teeth including an involute surface that extends between a tooth tip and a tooth base, each involute surface including at least reference points A-D thereon with reference point A near the base, reference point D near the tip, reference point B between reference points A and D, and reference point C between reference points B and D, the reference points A-D having respective roll angles, ε
A-D, between a corresponding first line that is perpendicular to the involute surface at the given reference point A-D and a second line that is tangent at a reference point that lies on a terminal end of the involute surface at the tooth base to a reference base circle having a center origin at the center axis, for a diametrically smaller one of the first gear and the second gear the roll angle ε
A is 1.51°
-3.51°
, the roll angle ε
B is 7.64°
-9.64°
, the roll angle ε
C is 26.03°
-28.03°
, and the roll angle ε
D is 32.16°
-34.16°
, and for a diametrically larger one of the first gear and the second gear the roll angle ε
A is 15.02°
-17.02°
, the roll angle ε
B is 16.7°
-18.7°
, the roll angle ε
C is 21.73°
-23.73°
, and the roll angle ε
D is 23.41°
-25.41°
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A generator comprising:
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a stator; a rotor shaft that is rotatable; a rotor mounted on the rotor shaft to be driven within the stator and having a plurality of magnetic members circumferentially spaced around the rotor shaft; a gear train including a rotor gear mounted on the rotor shaft, a gear set engaged with the rotor gear, and a pump gear operative to be driven by the rotor gear through the gear set; a pump operatively coupled to the rotor shaft through the pump gear of the gear train, and the gear set including a first gear intermeshed with the pump gear and a second gear intermeshed with the rotor gear, the first gear having a first set of involute teeth circumferentially located about a center axis of rotation, the second gear is axially spaced from the first gear and coupled with the first gear such that the first gear and the second gear co-rotate, the second gear having a second set of involute teeth circumferentially located about the center axis of rotation, each tooth of the first set of involute teeth and the second set of involute teeth including an involute surface that extends between a tooth tip and a tooth base, each involute surface including at least reference points A-D thereon with reference point A near the base, reference point D near the tip, reference point B between reference points A and D, and reference point C between reference points B and D, the reference points A-D having respective roll angles, ε
A-D, between a corresponding first line that is perpendicular to the involute surface at the given reference point A-D and a second line that is tangent at a reference point that lies on a terminal end of the involute surface at the tooth base to a reference base circle having a center origin at the center axis, for a diametrically smaller one of the first gear and the second gear the roll angle ε
A is 1.51°
-3.51°
, the roll angle ε
B is 7.64°
-9.64°
, the roll angle ε
C is 26.03°
-28.03°
, and the roll angle ε
D is 32.16°
-34.16°
, and for a diametrically larger one of the first gear and the second gear the roll angle ε
A is 15.02°
-17.02°
, the roll angle ε
B is 16.7°
-18.7°
, the roll angle ε
C is 21.73°
-23.73°
, and the roll angle ε
D is 23.41°
-25.41°
. - View Dependent Claims (16, 17)
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18. A method for installing a gear train in a generator, comprising:
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disassembling at least a portion of a generator that includes a stator, a rotor shaft that is rotatable, a rotor mounted on the rotor shaft to be driven within the stator and having a plurality of magnetic members circumferentially spaced around the rotor shaft, a gear train including a rotor gear mounted on the rotor shaft, a first gear set engaged with the rotor gear, and a pump gear operative to be driven by the rotor gear through the gear set, and a pump operatively coupled to the rotor shaft through the pump gear of the gear train; and inserting a second gear set into the generator in place of the first gear set, the second gear set including a first gear intermeshed with the pump gear and a second gear intermeshed with the rotor gear, the first gear having a first set of involute teeth circumferentially located about a center axis of rotation, the second gear is axially spaced from the first gear and coupled with the first gear such that the first gear and the second gear co-rotate, the second gear having a second set of involute teeth circumferentially located about the center axis of rotation, each tooth of the first set of involute teeth and the second set of involute teeth including an involute surface that extends between a tooth tip and a tooth base, each involute surface including at least reference points A-D thereon with reference point A near the base, reference point D near the tip, reference point B between reference points A and D, and reference point C between reference points B and D, the reference points A-D having respective roll angles, ε
A-D, between a corresponding first line that is perpendicular to the involute surface at the given reference point A-D and a second line that is tangent at a reference point that lies on a terminal end of the involute surface at the tooth base to a reference base circle having a center origin at the center axis, and for a diametrically smaller one of the first gear and the second gear the roll angle ε
A is 1.51°
-3.51°
, the roll angle ε
B is 7.64°
-9.64°
, the roll angle ε
C is 26.03°
-28.03°
, and the roll angle ε
D is 32.16°
-34.16°
, and for a diametrically larger one of the first gear and the second gear the roll angle ε
A is 15.02°
-17.02°
, the roll angle ε
B is 16.7°
-18.7°
, the roll angle ε
C is 21.73°
-23.73°
, and the roll angle ε
D is 23.41°
-25.41°
.
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Specification