PATENT CLAIM ANALYSIS

Application Number: 15781434
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-12
Patent Classification: ["060", "421000"]

Abstract:
A hydraulic system for construction machinery includes a boom cylinder, a main control valve including a boom control spool that is configured to selectively supply a hydraulic oil from a hydraulic pump to a boom head chamber and a boom rod chamber of the boom cylinder, a regeneration device connected to the boom head chamber of the boom cylinder through a hydraulic regeneration line, a regeneration valve unit installed in the regeneration line, and a control unit connected to the main control valve and the regeneration valve unit, wherein in a boom down low speed mode the hydraulic oil is drained through the regeneration device to lower the boom at a first speed, and in a boom down high speed mode the hydraulic oil is drained through the regeneration device and the main control valve to lower the boom at a second speed greater than the first speed.

Claim (Index 13):
A hydraulic control method for construction machinery, comprising:\n determining usage of a boom down high speed mode of a regeneration mode for regenerating boom energy of the construction machinery; draining a hydraulic oil from a boom head chamber of the boom cylinder through a regeneration device that is connected to the boom head chamber by a hydraulic regeneration line, to lower the boom at a first speed when the boom down high speed mode is not selected; and draining the hydraulic oil from the boom head chamber through the regeneration device and draining the hydraulic oil through a main control valve that is connected to the boom head chamber by a boom head hydraulic line, to lower the boom at a second speed greater than the first speed when the boom down high speed mode is selected.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 94.0
- Lexical Diversity: 2.92453
- Patent Class: 60.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15781313', '15578918', '15103447', '15169947', '15536144']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7554949465491358
- 35 USC 102 Novelty (BERT): 0.5258301820971774
- Combined Prediction Score: 0.7325284701039401
- Mean Citation Score: 324.479602
- Max Citation Score: 385.7688
- Similarity Product: 322.90969049320216

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