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 3):
The hydraulic pump control system of the hydraulic working machine according to  claim 2 , wherein:\n the control means sets the virtual pump flow rate obtained on the assumption that the bypass cut valve is not present in accordance with a predetermined relationship between a manipulation amount of the hydraulic actuator manipulation tool and a pump flow rate of the hydraulic pump.

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): 0.7434438780286033
- 35 USC 102 Novelty (BERT): 0.5131218840160687
- Combined Prediction Score: 0.7204116786273499
- Mean Citation Score: 307.380236
- Max Citation Score: 324.7327
- Similarity Product: 263.55755938331487

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