PATENT CLAIM ANALYSIS

Application Number: 16023469
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-01
Patent Classification: ["123", "090150"]

Abstract:
An engine variable valve operating apparatus includes a cam switching mechanism having a switching drive shaft. When the switching drive shaft is longitudinally moved, a cam mechanism advances and retracts a switching pin. When the switching pin is advanced to engage in a lead groove formed around a cam carrier and the cam carrier is axially moved while rotating, cam lobes around the cam carrier are switched to act on an engine valve. An actuator for the switching drive shaft includes an actuator drive body which is linearly reciprocally movable and is coupled to a longitudinal end of the switching drive shaft to axially move the same. The above arrangement enables the cam switching mechanism and the actuator mechanism to be simple and compact in structure for preventing the engine from becoming large in size.

Claim (Index 1):
A variable valve operating apparatus comprising:\n a camshaft rotatably mounted in a cylinder head superposed on a cylinder block of an internal combustion engine; a cam carrier in the form a hollow cylindrical member relatively non-rotatably and axially slidably fitted around the camshaft and including, on an outer circumferential surface thereof, a plurality of cam lobes having different cam profiles and disposed axially adjacent to each other; and a cam switching mechanism for axially moving the cam carrier to switch the cam lobes to act on an engine valve; wherein the cam switching mechanism includes:\n a lead groove formed in an outer circumferential surface of the cam carrier and extending fully circumferentially therearound; \n a switching pin capable of being advanced to engage in and retracted to disengage from the lead groove; \n a switching drive shaft disposed parallel to the camshaft to be movable longitudinally thereof so as to cooperate with the switching pin to constitute a cam mechanism for advancing and retracting movements of the switching pin, in such a manner that the advancing movement causes the switching pin to engage in the lead groove so as to axially move the cam carrier while rotating, to switch the cam lobes to act on the engine valve; and \n an actuator for longitudinally moving the switching drive shaft, the actuator including an actuator drive body which is linearly reciprocally movable and is coupled to a longitudinal end of the switching drive shaft for longitudinally moving the switching drive shaft.

Metadata:
- Claim Count in Document: 31.0
- Percentile: 94.0
- Lexical Diversity: 2.05797
- Patent Class: 123.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16023501', '16089900', '13611648', '16484261', '11878240']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7308895507780466
- 35 USC 102 Novelty (BERT): 0.5686723756422184
- Combined Prediction Score: 0.7146678332644638
- Mean Citation Score: 346.111368
- Max Citation Score: 462.96017
- Similarity Product: 432.9352839824247

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