PATENT CLAIM ANALYSIS

Application Number: 15773226
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-11
Patent Classification: ["408", "222000"]

Abstract:
A pipe-tapered-thread machining spiral tap includes a tapered thread portion that is circumferentially divided by flutes into a plurality of lands. Each of at least one of the lands has a cutting edge that extends along a corresponding one of the flutes. The flutes are made of a plurality of spiral flutes that are three, four or five spiral flutes each having a helix angle that is not smaller than 30° and smaller than 50°. A flute width ratio AG/(AG+AL) is 0.3-0.5, where AG represents a central angle which is subtended by each of the flutes and which is defined at a center corresponding to the rotation axis in a cross section that is perpendicular to the rotation axis, and AL represents a central angle which is subtended by each of the lands and which is defined at the center in the cross section.

Claim (Index 6):
The spiral tap according to  claim 5 , wherein\n a relieved surface is defined in said chamfered portion, such that a radial distance from said rotation axis to said relieved surface is reduced in a direction opposite to said direction of rotation of said spiral tap in a region from said cutting edge to an intermediate position in a width of each of said at least one of said lands, and such that said radial distance is constant in said direction opposite to said direction of rotation of said spiral tap in a region from said intermediate position to said back edge.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 93.0
- Lexical Diversity: 2.08108
- Patent Class: 408.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['14785742', '13413942', '11990686', '11582806', '11384349']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7538894756413206
- 35 USC 102 Novelty (BERT): 0.488525907369605
- Combined Prediction Score: 0.727353118814149
- Mean Citation Score: 250.552878
- Max Citation Score: 258.53394
- Similarity Product: 198.032260197258

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