PATENT CLAIM ANALYSIS

Application Number: 15883513
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["701", "069000"]

Abstract:
A control apparatus that controls a four-wheel drive vehicle in which a driving force is transmitted to rear wheels via a dog clutch, a propeller shaft, and a driving force transmission apparatus is configured to, when switching to a four-wheel drive mode, reduce a difference in rotation speeds of an intermediate rotational member and a ring gear member by a frictional force between a friction surface of a friction member, which is configured such that its rotation relative to the intermediate rotational member is restricted, and a target frictional slide surface of the ring gear member, and then couple the intermediate rotational member and the ring gear member by a clutch member in a state in which engagement forces of friction clutches configured to transmit the driving force between each of first and second output rotational members and the intermediate rotational member of the driving force transmission apparatus are set to engagement forces that allow their relative rotation.

Claim (Index 7):
A four-wheel drive vehicle, comprising:\n a driving shaft configured to transmit a driving force of a drive source in a fore-and-aft direction of the vehicle; a driving force connecting/disconnecting apparatus configured to connect or disconnect the driving force from the drive source toward the driving shaft; and a driving force transmission apparatus configured to transmit the driving force from the driving shaft toward wheels in a disconnectable and adjustable manner, the four-wheel drive vehicle being configured such that the driving force is transmitted to the wheels via the driving force connecting/disconnecting apparatus and the driving force transmission apparatus in a four-wheel drive mode and the transmission of the driving force that is performed by both of the driving force connecting/disconnecting apparatus and the driving force transmission apparatus is interrupted in a two-wheel drive mode, wherein the driving force transmission apparatus includes: a first rotational member configured to rotate along with rotation of the driving shaft; a second rotational member arranged so as to be coaxially rotatable relative to the first rotational member; a friction clutch configured to transmit the driving force between an output rotational member and the second rotational member, the output rotational member being configured to output the driving force toward the wheels; a friction member configured such that its rotation relative to one rotational member out of the first rotational member and the second rotational member is restricted, and configured to generate a frictional force by being brought into contact with the other rotational member; a clutch member having a first meshing portion configured to mesh with the first rotational member, and a second meshing portion configured to mesh with the second rotational member; and a movement mechanism configured to move the friction member and the clutch member relative to the first rotational member and the second rotational member, the clutch member is movable between a coupled position where the first meshing portion and the second meshing portion are meshed to couple the first rotational member and the second rotational member so that the first rotational member and the second rotational member are not rotatable relative to each other and a decoupled position where at least one of the first meshing portion and the second meshing portion is not meshed to allow the first rotational member and the second rotational member to rotate relative to each other, and the four-wheel drive vehicle is configured to, when the two-wheel drive mode is switched to the four-wheel drive mode while the four-wheel drive vehicle is traveling, reduce a difference in rotation speeds of the first rotational member and the second rotational member by the frictional force between the friction member and the other rotational member, and then move the clutch member from the decoupled position to the coupled position in a state in which an engagement force of the friction clutch is set to an engagement force that allows the output rotational member and the second rotational member to rotate relative to each other.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 86.0
- Lexical Diversity: 2.37143
- Patent Class: 701.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15075911', '15725400', '15626391', '13959040', '12762581']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4929571486375335
- 35 USC 102 Novelty (BERT): 0.5154667830081534
- Combined Prediction Score: 0.4952081120745955
- Mean Citation Score: 325.122946
- Max Citation Score: 342.27112
- Similarity Product: 289.1259146595955

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test