PATENT CLAIM ANALYSIS

Application Number: 15938047
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["701", "059000"]

Abstract:
A control device of a four-wheel-drive vehicle having an electronic control coupling changing a transmission torque, and a connecting/disconnecting mechanism connecting/disconnecting an input to the input-side rotating member of the coupling, comprising: a storage portion storing a relationship between the drive current to the coupling and the transmission torque of the coupling; a control portion controlling the drive current based on the relationship; and a learning portion performing correction for the relationship through learning by applying a braking torque to the input-side rotating member by an electromagnetic actuator. The learning portion performs the correction for the relationship by using the drive current supplied to the coupling and the braking torque at the time of determination that the transmission torque is balanced with the braking torque based on rotational speeds of the input-side rotating member and the output-side rotating member while the rotational speed of the input-side rotating member is increased.

Claim (Index 7):
The control device of a four-wheel-drive vehicle according to  claim 5 , wherein\n the connecting/disconnecting mechanism includes a connecting/disconnecting sleeve including second connecting/disconnecting teeth that are meshed with first connecting/disconnecting teeth formed on the ring gear, disposed relatively non-rotatably and movably in a rotation axis direction with respect to the output shaft, and moved between a meshing position at which the second connecting/disconnecting teeth are meshed with the first connecting/disconnecting teeth and a non-meshing position at which the second connecting/disconnecting teeth are not meshed with the first connecting/disconnecting teeth, a return spring urging the connecting/disconnecting sleeve in a direction from the non-meshing position toward the meshing position, a piston disposed relatively rotatably with respect to the output shaft and moving the connecting/disconnecting sleeve to the non-meshing position against the urging force of the return spring, a ball cam including a pair of cam members relatively rotated around the rotation axis by an operation of the electromagnetic actuator and a spherical rolling element sandwiched between groove-shaped cam surfaces respectively formed on facing surfaces of the pair of cam members so that when the pair of cam members is relatively rotated, one of the pair of cam members is moved toward the piston, and a holder having a plurality of levels of latching teeth and disposed relatively non-rotatably and non-movably in the rotation axis direction with respect to the output shaft to latch the piston with each one tooth of the plurality of levels of latching teeth so as to position the connecting/disconnecting sleeve at the meshing position or the non-meshing position, and wherein by applying the braking torque to the other of the pair of cam members through the operation of the electromagnetic actuator to relatively rotate the pair of cam members, one of the pair of cam members is reciprocated to change a position of latching of the piston with the holder, so that the connecting/disconnecting sleeve is moved between the non-meshing position and the meshing position.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 90.0
- Lexical Diversity: 2.41538
- Patent Class: 701.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14877417', '15125061', '15051233', '10396607', '15725417']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4508117802952229
- 35 USC 102 Novelty (BERT): 0.5126283050672523
- Combined Prediction Score: 0.4569934327724259
- Mean Citation Score: 269.623854
- Max Citation Score: 289.33936
- Similarity Product: 211.4503864509392

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

Dataset: test