PATENT CLAIM ANALYSIS

Application Number: 15923217
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-07
Patent Classification: ["175", "296000"]

Abstract:
A system and method of fabricating a percussion tool that includes one or more surfaces modified using the ferritic nitrocarburization process. The percussion tool includes a piston positioned in sliding contact within a casing. The piston includes an inner wall and an outer wall, where the inner wall defines a passageway extending longitudinally therethrough. The outer wall is positioned in close fitting relationship with an internal surface of the casing. One or more surfaces of at least one of the casing's internal surface and/or the piston's outer wall are modified using the ferritic nitrocarburization process.

Claim (Index 1):
A downhole percussion tool, comprising:\n a casing comprising a top end, a bottom end, and an internal surface extending from the top end to the bottom end, the internal surface defining a casing passageway extending longitudinally therethrough; a top sub comprising a top end coupleable to a drill string and a bottom end coupled to the top end of the casing; a mandrel being supported within a lower portion of the casing; a piston slidably mounted within the casing passageway above the mandrel and moveable to deliver an impact force onto the mandrel, the piston comprising:\n an interior wall extending from an upper surface of the piston to a lower surface of the piston and defining a piston passageway extending longitudinally therethrough; and \n an exterior wall surrounding the interior wall and extending from the upper surface of the piston to the lower surface of the piston, the exterior wall and the casing being positioned in close fitting relationship; \n one or more portions of the internal surface of the casing or the exterior wall of the piston has been modified using a ferritic nitrocarburization process; a rotary bit coupled to the mandrel and extending outwardly from a bottom portion of the mandrel, and wherein:\n each of the top sub and the mandrel has a respective passageway extending longitudinally therethrough and in fluid communication with the piston passageway for supplying pressurized fluid from the drill string to the rotary bit, and \n the rotary bit has a bit passageway extending therein and in fluid communication with the mandrel passageway.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 90.0
- Lexical Diversity: 1.90741
- Patent Class: 175.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14870847', '14079362', '14079342', '14079323', '14179867']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7257757240529366
- 35 USC 102 Novelty (BERT): 0.5178725861820674
- Combined Prediction Score: 0.7049854102658497
- Mean Citation Score: 308.2364280000001
- Max Citation Score: 377.31448
- Similarity Product: 356.84082822908874

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

Dataset: test