PATENT CLAIM ANALYSIS

Application Number: 15914270
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["123", "090270"]

Abstract:
A cam chain tensioner device of an internal combustion engine includes a cam chain tensioner, and a tensioner lifter pressing the cam chain tensioner to a cam chain. The tensioner lifter is mounted on an inclined upper surface of the cylinder head. The cylinder head has therein a valve train oil supply passage supplying oil from an oil pump to the valve train camshafts, and a tensioner lifter oil supply passage supplying oil to the tensioner lifter. The valve gear oil supply passage has a branching portion where the tensioner lifter oil supply passage branches. The branching portion is at a position higher than the tensioner lifter, and communicates with the tensioner lifter disposed at a position lower than the branching portion. It is thus possible to prevent fluttering of the cam chain and to reduce noise generated by the cam chain at the time of restart of the engine after it is stopped.

Claim (Index 1):
An internal combustion engine of a saddle riding vehicle, including a crankcase rotatably supporting a crankshaft therein, a cylinder portion fixedly mounted on the crankcase with a cylinder axis inclined relative to a vertical direction, cam shafts of a valve train, a cam chain for transmitting power from the crankshaft to the camshafts, and a cam chain tensioner device for pressing and tensioning the cam chain, wherein:\n the cam chain tensioner device includes a cam chain tensioner swingably supported by the crankcase to contact the cam chain, and a tensioner lifter pressing the cam chain tensioner to cause the same to press and tension the cam chain; the tensioner lifter is disposed on an inclined upper surface of the cylinder portion and directed toward the cam chain; the engine includes an oil pump, a valve gear oil supply passage for supplying oil from the oil pump to the camshafts, and a tensioner lifter oil supply passage for supplying oil to the tensioner lifter; the valve gear oil supply passage has a branching portion where the tensioner lifter oil supply passage branches; and the branching portion branches at a position higher than the tensioner lifter and communicates with the tensioner lifter disposed at a position lower than the branching portion to send oil into the tensioner lifter.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 90.0
- Lexical Diversity: 2.4697
- Patent Class: 123.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15914681', '15704953', '14529975', '12542094', '15474303']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7761917091000546
- 35 USC 102 Novelty (BERT): 0.5688644261564683
- Combined Prediction Score: 0.755458980805696
- Mean Citation Score: 392.338556
- Max Citation Score: 478.42096
- Similarity Product: 399.87253276947024

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

Dataset: test