PATENT CLAIM ANALYSIS

Application Number: 16091687
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-05
Patent Classification: ["416", "164000"]

Abstract:
A variable pitch mechanism for a helicopter is configured to have a simple configuration with a small number of members, and to be capable of precisely controlling a pitch angle of blades without accurate adjustment. A pitch plate  16  and a pitch plate boss  17  are slidably mounted on an outer periphery of a main mast  61 , and an output shaft of a servomotor  19  is directly connected to a pitch lever  18  that vertically moves the pitch plate boss  17 . By actuating the servomotor  19  and rotating the pitch lever  18 , the pitch plate boss  17  and the pitch plate  16  are displaced upward or downward along the main mast  61 , thereby tilting blade holders  13, 13  connected to the pitch plate  16  and changing a pitch angle of the blades  14.

Claim (Index 2):
The helicopter rotor head according to  claim 1 , wherein\n the pitch plate unit is composed of a pitch plate formed by protruding arm sections on an outer peripheral surface of a ring-shaped main body section, and a cylindrical pitch plate boss, the pitch plate is rotatably supported by a neck section protruding from an upper surface of the pitch plate boss, both the arm sections of the pitch plate are connected to the pitch arms provided in the blade holders through the pitch links, and the arm sections of the pitch lever are rotatably and pivotably supported and connected to an outer peripheral surface of the pitch plate boss.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 97.0
- Lexical Diversity: 1.98592
- Patent Class: 416.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14272839', '15757282', '12667495', '14302746', '12392426']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7401402387835808
- 35 USC 102 Novelty (BERT): 0.4594933516423806
- Combined Prediction Score: 0.7120755500694608
- Mean Citation Score: 211.141688
- Max Citation Score: 240.73668
- Similarity Product: 159.65972796628475

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