PATENT CLAIM ANALYSIS

Application Number: 15747609
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["228", "203000"]

Abstract:
A brazing method includes shaping a clad sheet to form a hollow structure. A tube is then partially inserted into a through hole in the hollow structure, thereby forming an assembled aluminum structure. The exterior surface of the hollow structure adjacent the through hole is composed of an Al—Si alloy that serves as a first filler material. The interior surface of the hollow structure adjacent the through hole is composed of an Al—Si alloy containing at least one of Cu and Zn and having a solidus temperature of 570° C. or less that serves as a second filler material. The assembled aluminum structure is brazed by heating it in an inert-gas atmosphere such that fillets joining the hollow structure to the tube along the through hole are formed first on the interior surface of the hollow structure and then on the exterior surface of the hollow structure.

Claim (Index 1):
A fluxless brazing method comprising:\n preparing a clad sheet that: (i) has a multi-layer structure comprising at least a core composed of an aluminum material, a first filler material composed of an Al\u2014Si alloy and disposed on a first side of the core, and a second filler material composed of an Al\u2014Si alloy containing at least one of Cu and Zn and having a solidus temperature of 570\u00b0 C. or less, and that is disposed on a second side of the core; and (ii) contains, in at least one of the layers of the multi-layer structure, an element that breaks down an oxide film; preparing a tubular member composed of an aluminum material; manufacturing a hollow structure from the clad sheet, the outer-surface side of the hollow structure being composed of the first filler material and the hollow structure having a through hole into which the tubular member is inserted; assembling an aluminum structure such that the tubular member is inserted into the through hole and an end part of the tubular member is disposed in the interior of the hollow structure; and performing a brazing process in which the aluminum structure is heated in an inert-gas atmosphere, and thereby the hollow structure and the tubular member are joined.

Metadata:
- Claim Count in Document: 8.0
- Percentile: 86.0
- Lexical Diversity: 2.125
- Patent Class: 228.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15533869', '15325530', '10807398', '13000481', '12600462']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.822521413345054
- 35 USC 102 Novelty (BERT): 0.5182800754167997
- Combined Prediction Score: 0.7920972795522285
- Mean Citation Score: 280.62807200000003
- Max Citation Score: 340.04926
- Similarity Product: 285.19155032072536

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

Dataset: test