PATENT CLAIM ANALYSIS

Application Number: 15758033
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["060", "413000"]

Abstract:
A hydraulic driving apparatus that drives a plurality of driving subjects and regenerates energy thereof. This hydraulic driving apparatus includes: a first pump motor; a second pump motor that is switchable between a state of moving a first driving subject by hydraulic oil discharged from the first pump motor and a state of being operated as a pump by means of energy of the first driving subject; a first pump motor line that couples the first and second pump motors with each other; a first accumulator connected to the first pump motor line; a regeneration subject hydraulic actuator that moves a second driving subject; a second accumulator that receives hydraulic oil from the regeneration subject hydraulic actuator; a second pump motor line that couples the second accumulator with the first pump motor; and a pressure release changeover valve that opens/closes the second pump motor line.

Claim (Index 1):
A hydraulic driving apparatus for respectively driving a first driving subject and a second driving subject included in a work machine by means of a hydraulic pressure, comprising:\n a first pump motor that can be switched between a first pump operation state of being driven by a prime mover, thereby sucking hydraulic oil for driving the first driving subject from a tank, and discharging the hydraulic oil and a first motor operation state of receiving a supply of the hydraulic oil, thereby generating power; a second pump motor that is coupled to the first driving subject, and can be switched between a second motor operation state of receiving a supply of the hydraulic oil discharged from the first pump motor in the first pump operation state, thereby moving the first driving subject and a second pump operation state of receiving a supply of energy held by the first driving subject, thereby operating so as to suck the hydraulic oil from the tank, and discharge the hydraulic oil; a first pump motor line that connects the first pump motor and the second pump motor with each other so that the hydraulic oil can be supplied from the first pump motor to the second pump motor; a first accumulator that is connected to the first pump motor line, and receives the hydraulic oil discharged from the second pump motor in the second pump operation state, thereby accumulating a pressure; a pressure holding valve that is interposed between the first accumulator and the first pump motor, and preventing a pressure release from the first accumulator to the first pump motor so as to hold the pressure in the first accumulator; a regeneration subject hydraulic actuator that is coupled to the second driving subject, and receives a supply of the hydraulic oil, thereby moving the second driving subject; a hydraulic pump that sucks the hydraulic oil to be supplied to the regeneration subject hydraulic actuator from the tank, and discharges the hydraulic oil; a second accumulator that receives the hydraulic oil pressurized by means of energy held by the second driving subject, and discharged from the regeneration subject hydraulic actuator, thereby accumulating a pressure; a second pump motor line that connects the second accumulator to the first pump motor so that the pressure of the hydraulic oil accumulated in the second accumulator is released to the first pump motor in the first motor operation state, thereby enabling the drive of the first pump motor; and a pressure release changeover valve that can be switched between an open state of opening the second pump motor line, thereby enabling the pressure release from the second accumulator to the first pump motor and a closed state of blocking the second pump motor line, thereby blocking the pressure release.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 90.0
- Lexical Diversity: 2.76786
- Patent Class: 60.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15781313', '15447836', '15103447', '14764140', '15781434']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7362672469352647
- 35 USC 102 Novelty (BERT): 0.4822160809654392
- Combined Prediction Score: 0.7108621303382822
- Mean Citation Score: 249.750894
- Max Citation Score: 266.22583
- Similarity Product: 220.951629634034

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

Dataset: test