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 1):
A spiral tap that is to be rotated about a rotation axis for machining a pipe tapered thread, said spiral tap comprising a tapered thread portion having a thread profile that becomes from an incomplete profile to a complete profile in a direction away from a distal end of a chamfered portion toward a complete thread portion, said tapered thread portion being circumferentially divided by flutes into a plurality of lands, each of at least one of said lands having a cutting edge that is defined by one of opposite ends of said each of said at least one of said lands which is located on a front side of the other of said opposite ends in a direction of rotation of said spiral tap, such that said cutting edge extends along a corresponding one of said flutes, wherein\n said flutes consist 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\u00b0 and smaller than 50\u00b0, and a flute width ratio AG/(AG+AL) is 0.3-0.5, where AG represents a central angle which is subtended by each of said flutes and which is defined at a center corresponding to said rotation axis in a cross section that is perpendicular to said rotation axis, and AL represents a central angle which is subtended by each of said lands and which is defined at said center in said cross section.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 93.0
- Lexical Diversity: 2.08108
- Patent Class: 408.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14785742', '13413942', '11990686', '11582806', '11384349']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7307339552625614
- 35 USC 102 Novelty (BERT): 0.4888483254331997
- Combined Prediction Score: 0.7065453922796252
- Mean Citation Score: 250.552878
- Max Citation Score: 258.53394
- Similarity Product: 190.3408781943869

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