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 5):
The spiral tap according to  claim 1 , wherein\n each of said at least one of said lands has a back edge that is defined by said other of said opposite ends of each of said at least one of said lands which is located on a front side of said one of said opposite ends in a direction opposite to said direction of rotation of said spiral tap, such that said back edge extends along a corresponding one of said flutes; and a rake angle of said back edge is smaller than a rake angle of said cutting 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): 0.7528440620916855
- 35 USC 102 Novelty (BERT): 0.4951276114328002
- Combined Prediction Score: 0.7270724170257971
- Mean Citation Score: 250.552878
- Max Citation Score: 258.53394
- Similarity Product: 178.64996892052173

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