PATENT CLAIM ANALYSIS

Application Number: 15867852
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["060", "253000"]

Abstract:
A cylindrically-shaped hybrid rocket engine solid fuel grain defines an axial combustion port. A fuel grain material comprises a compounded blend of thermoplastic fuel and aluminum. The fuel grain comprises fused stack layers, each layer comprising a plurality of fused abutting concentric beaded structures arrayed to define the combustion port; the port exhibits a rifling pattern or rifling inducing geometry along the port wall. When an oxidizer is introduced into the combustion port combustion occurs along the exposed port wall. Each beaded structure defines a geometry that increases the combustion surface area while inducing a vortex flow of oxidizer and fuel gas. As each layer ablates, an abutting layer exhibiting a similar geometry, is revealed, undergoes a gas phase change, and ablates. This process repeats and persists until oxidizer flow is terminated or the fuel grain material is exhausted. The fuel grain may be manufactured by an additive manufacturing process.

Claim (Index 14):
The fuel grain of  claim 1  wherein the fuel grain defines an outer diameter of about 19.0 inches and the combustion port has an initial diameter of about 4 inches prior to consumption of fuel grain material during combustion.

Metadata:
- Claim Count in Document: 68.0
- Percentile: 86.0
- Lexical Diversity: 1.88506
- Patent Class: 60.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15262661', '15818381', '15275423', '12052934', '13564463']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7656818874363943
- 35 USC 102 Novelty (BERT): 0.5828583239022717
- Combined Prediction Score: 0.747399531082982
- Mean Citation Score: 408.922596
- Max Citation Score: 495.2266
- Similarity Product: 457.8459594454766

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