PATENT CLAIM ANALYSIS

Application Number: 16252630
Application Type: Utility
Filing Date: 2019-01
Publication Date: 2019-08
Patent Classification: ["405", "152000"]

Abstract:
The Helical segmental lining is an invention in tunneling industry wherein segments are designed in helical shape that are connected by interlocking system. The proposed helical tunnel lining method allows for segment erection and excavation to be completed concurrently and continuously by Tunnel Boring Machine (TBM) which will result in increasing the tunneling speed. The segments have tongue projection on the two trailing sides (circumferential and radial) and similar groove recess in the opposite two leading sides. This forms a tongue-and-groove joint at both circumferential and radial joints. The system allows for optional post-tensioning (PT) strand to be inserted into the leading circumferential side of the segments. The optional PT strand is fitted into a continuous groove located at the leading circumferential side of the segments. The system has solutions for the alignment curves and turning of the helical segmental lining, sealing of the system as well as terminating the strand and beginning another due to limitation of the strand length. The method is eliminating bolt connection between segments and increase tunnel advancement rate. The system allows for using typical (identical) segments.

Claim (Index 20):
A ring precast segmental lining comprising plurality of precast segments that are interlocked together to build a ring in a ring lining, wherein a precast segment comprising:\n a tongue at a circumferential side and a groove at an opposite side of said circumferential side to provide interlock connection between adjacent segments, a tongue at a radial side and a groove at an opposite side of said radial side to provide interlock connection between adjacent segments, Wherein circumferential and radial sides are straight or polyline, and wherein one or a plurality rows of sealing gaskets are located on said tongue's sides or on said groove's sides of said precast segments to provide sealing at said ring segmental lining.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 99.0
- Lexical Diversity: 1.88679
- Patent Class: 405.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['12337113', '10272852', '14862150', '13513062', '15071485']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7307334979337572
- 35 USC 102 Novelty (BERT): 0.4754532297189853
- Combined Prediction Score: 0.70520547111228
- Mean Citation Score: 146.8313
- Max Citation Score: 155.8117
- Similarity Product: 109.10146382557156

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

Dataset: test