PATENT CLAIM ANALYSIS

Application Number: 15754676
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["060", "468000"]

Abstract:
A hydraulic working machine is provided that uses a variable displacement pump and open center type flow rate control valve for a controlling a hydraulic actuator, and has a negative control throttle disposed in a center bypass oil passage to generate a negative control pressure. A hydraulic pump control system performs virtual bleed-off control for reducing the bleed-off flow rate of the center bypass oil passage, and can operate the hydraulic actuator with the same performance as an open center control. The control system includes a bypass cut valve disposed upstream from the negative control throttle to reduce flow through the center bypass oil passages, and a negative control pressure output valve that outputs a virtual negative control pressure. The control system is configured to reduce the bleed-off flow rate by operating the bypass cut valve when virtual bleed-off control is performed, and to reduce the pump flow rate by the bleed-off reduction flow rate.

Claim (Index 10):
The hydraulic pump control system of the hydraulic working machine according to  claim 1 , wherein the control means allows the bypass cut valve to fully open and allows the negative control pressure output valve to connect an input of the negative control pressure introduction means to tank in an open center control mode.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 88.0
- Lexical Diversity: 2.4697
- Patent Class: 60.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15413819', '15726840', '14217678', '14217721', '15556016']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7435012652005729
- 35 USC 102 Novelty (BERT): 0.5117897062303279
- Combined Prediction Score: 0.7203301093035485
- Mean Citation Score: 307.380236
- Max Citation Score: 324.7327
- Similarity Product: 275.3673261193216

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