PATENT CLAIM ANALYSIS

Application Number: 15902906
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["405", "184300"]

Abstract:
A pipe bursting system and method are described wherein a bursting head pulled by a cable employs a relatively small pneumatic hammer and a relatively large cable tension to impose a cyclical hoop stress on the pipe being burst to cause fatigue failure of the pipe, resulting in lower size and power requirements, and higher efficiency for a given set of job requirements.

Claim (Index 1):
A method of replacing underground conduit wherein an existing conduit is ruptured and expanded to create a space, and wherein a replacement conduit in introduced to occupy the space, said method comprising:\n employing a hydraulic cable puller system having a cable puller gripping a wire cable attached to a bursting head shaped to apply a radially outward stress to the existing conduit when the cable is placed under tension by the cable puller; allowing the tension in the cable to increase substantially to store potential energy therein and substantially increase the stress on the replacement conduit in the region of engagement with the bursting head; and repetitively increasing and reducing the potential energy in the cable to impose a cyclically variable stress component in the region of engagement sufficient to cause fatigue failure of the conduit.

Metadata:
- Claim Count in Document: 24.0
- Percentile: 88.0
- Lexical Diversity: 1.375
- Patent Class: 405.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['11174180', '10863301', '10342137', '10869361', '14064153']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7485604455955263
- 35 USC 102 Novelty (BERT): 0.4901201738071218
- Combined Prediction Score: 0.7227164184166858
- Mean Citation Score: 186.96526
- Max Citation Score: 220.83107
- Similarity Product: 159.3049721694726

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