PATENT CLAIM ANALYSIS

Application Number: 16221708
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-04
Patent Classification: ["384", "558000"]

Abstract:
A bearing arrangement for a fluid machinery application employing an axially locating bearing. The axially locating bearing includes: a first angular self-aligning contact bearing arranged next to a second angular self-aligning contact bearing. Each of the first angular self-aligning contact bearing and the second angular self-aligning contact bearing includes a set of rolling elements arranged in a row and interposed between a respective curved inner raceway and an associated curved outer raceway. Each roller is a symmetrical cylindrically-shaped roller having a curved raceway-contacting surface. Each roller is inclined respective to the axial direction of the shaft by a respective contact angle. The rollers support an axial force and a radial force. The axially non-locating bearing position is arranged spaced apart from the axially locating bearing position, as seen in the axial direction. Examples of fluid machinery applications include: a wind turbine, water turbine or a propulsion turbine.

Claim (Index 6):
A fluid machine configured to extract energy from a fluid in motion, the fluid machine comprising:\n a plurality of blades that are configured to be rotated by the fluid directly contacting the plurality of blades; a rotor shaft connected to the plurality of blades such that rotation of the plurality of blades by the fluid drives the rotor shaft, and wherein an axial force and a radial force transmitted to the plurality of blades by the fluid is further transmitted to the rotor shaft; a bearing arrangement arranged on the rotor shaft, the bearing arrangement comprising: an axially locating bearing position arranged on the rotor shaft, the axially locating bearing position further comprising: a first angular self-aligning contact bearing arranged next to a second angular self-aligning contact bearing for locating the rotor shaft against movement in an axial direction; the first angular self-aligning contact bearing having a first set of rolling elements arranged in a first row and interposed between a first curved inner raceway and a first curved outer raceway, wherein each of the first set of rolling elements is a symmetrical convex shaped roller having a first curved raceway-contacting surface being engageable with the first curved inner raceway and the first curved outer raceway, the first curved inner raceway, the first curved outer raceway, and the first curved raceway-contacting surface are all curved with respect to the axial direction, wherein each of the first set of rolling elements of the first angular self-aligning contact bearing is inclined in relation to the axial direction of the rotor shaft by a first contact angle; whereby the first set of rolling elements are arranged to cooperate with the first curved inner raceway and the first curved outer raceway for supporting the axial force and the radial force; and the second angular self-aligning contact bearing having a second set of rolling elements arranged in a second row and interposed between a second curved inner raceway and a second curved outer raceway, wherein each of the second set of rolling elements is a symmetrical convex shaped roller having a second curved raceway-contacting surface being engageable with the second curved inner raceway and the second curved outer raceway, the second curved inner raceway, the second curved outer raceway, and the second curved raceway-contacting surface are all curved with respect to the axial direction, wherein each of the second set of rolling elements of the second angular self-aligning contact bearing is inclined in relation to the axial direction of the rotor shaft by a second contact angle; whereby the second set of rolling elements are arranged to cooperate with the second curved inner raceway and the second curved outer raceway for supporting the axial force and the radial force; a second bearing position is arranged on the rotor shaft and spaced axially apart from the axially locating bearing position, the second bearing position comprises a bearing comprising a third set of rolling elements interposed between a third curved inner raceway and a third curved outer raceway, the second bearing position not being configured to support axial force sufficiently to, on its own, prevent displacement between the rotor shaft and the third curved outer raceway since the third curved outer raceway and the third curved inner raceway are configured to be misalignable and to be displaceable from each other in the axial direction, wherein each of the third set of rolling elements is a symmetrical convex shaped roller having a third curved raceway-contacting surface being engageable with the third curved inner raceway and the third curved outer raceway, the third curved inner raceway, the third curved outer raceway.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 98.0
- Lexical Diversity: 2.14865
- Patent Class: 384.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14535420', '14705063', '14856598', '14932257', '15030344']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8102266573025246
- 35 USC 102 Novelty (BERT): 0.5400304157330499
- Combined Prediction Score: 0.7832070331455772
- Mean Citation Score: 322.838536
- Max Citation Score: 411.12485
- Similarity Product: 292.18504854132834

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test