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US 8,602,758 B2Granted
Indexed positive displacement rotary motion device
AssigneeExponential Technologies, Inc.
InventorsAlejandro Juan, Curtis Patterson, Kristjan Gottfried, Soheil Farshchian
Life of this patent
Estimating the term…
Abstract
An indexing system for a rotor assembly where the indexing system can regulate the rotational location of drive rotors that are configured to rotate about a shaft in one form.
Claims37
A rotor assembly comprising first and second opposing drive rotors having first and second center axes that are offset from co-linear, the rotor assembly comprising:
- a. each rotor comprising one or more lobes, the lobes having offset engagement surfaces configured to engage lobe tips of the opposing rotor(s) the offset engagement surfaces being defined by a reference axis fixed to a center axis of the opposing rotor and rotating the reference axis with respect to the center axis of the offset engagement surface of the opposing drive rotor whereas a distance from the reference axis to the lobe tip of the opposing rotor plus a distance of a prescribed gap distance or interference fit determines the location of the offset engagement surface,
- b. a through shaft passing through the drive rotors, the through shaft having a center portion in part defining a portion of a sphere, the drive rotors each having an interior portion forming a portion of a concave spherical surface operatively configured to engage the center portion of the through shaft,
- c. an indexing system comprising an index offset surface on the first rotor, an indexer surface mounted to the through shaft where the indexer surface is positioned so as to engage the index offset surface of first drive rotor as the first drive rotor rotates with the through shaft having a center of rotation which is not co-linear as to a center of rotation of the first drive rotor or second drive rotor.
A device to convert energy comprising:
- a. a plurality of opposed drive rotors comprising first and second drive rotors operatively configured to have extended lobes engaging a bucket region defined by two adjacent lobes of the opposing drive rotor, each of the drive rotors comprising a forward location and a rearward location wherein rearward locations of the drive rotors are spaced further in the axial direction away from the common center of rotation of the rotors than the spacing of the forward locations of the drive rotors, the drive rotor comprising an index offset surface;
- b. an indexing system comprising an indexer housing comprising a plurality of indexer surfaces, the indexer surfaces operatively configured to engage the index offset surface of the second drive rotor;
- c. a drive shaft whereby the indexer housing is attached to the drive shaft and configured to house the index surfaces therein.
A rotor assembly comprising:
- a. a first rotor member fixedly attached to a center shaft, the first rotor member having a first engagement surface having a number of mounds, N;
- b. a second rotor offset from co-linear having a common rotational center as the first rotor where the second rotor has a second engagement surface so the engagement between the first and second engagement surface is such that the number of mounds N of the first engagement surface is one integer value different from the number of mounds of the second engagement surface, the second rotor further having an engagement surface having a number of mounds N+1 or N−1;
- c. a fixed index rotor fixedly attached to the center shaft where the fixed index rotor is provided with an engagement surface configured to engage the index surface of the second rotor where the engagement surface of the fixed index rotor is provided with a number of mounds that is one integer value off from the number of mounds of the engagement surface of the second rotor;
- d. whereas the second rotor rotates with respect to the fixed index rotor and the first rotor at a value of either (N+1)/N or (N−1)/N.
1 more element
Dependencies are inferred from the claim text.