PATENT CLAIM ANALYSIS

Application Number: 15903191
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["384", "045000"]

Abstract:
A linear motion guide unit prevents damage to a corner portion of an end surface of a carriage resulting from high-speed rolling of rollers, and eliminates the need for strict dimensional management of facing end surfaces of the carriage and a spacer. A crowning is formed at an end portion of the carriage, and an R chamfered portion is formed at a corner of an end surface of the carriage. An R chamfered portion is formed at a corner of the end surface of the spacer. The R chamfered portions define a valley portion between the facing surfaces of the carriage and the spacer. The rollers roll above the valley portion while striding it to thereby be prevented from colliding against the corner portion of the end surface of the carriage, whereby damage to the corner portion of the end surface of the carriage can be prevented.

Claim (Index 1):
A linear motion guide unit comprising:\n a guide rail having a first raceway groove extending along a longitudinal direction, and a slider which has a second raceway groove facing the first raceway groove and slides in relation to the guide rail via a plurality of rollers serving as rolling elements and rolling in a load-carrying race composed of the first raceway groove and the second raceway groove, the slider having a carriage in which the second raceway groove and a return passage extending in parallel with the second raceway groove are formed, and end caps which are disposed in close contact with respective opposite end surfaces of the carriage and in which arc turnaround passages are formed respectively and establish communication between the load-carrying race and the return passage, each of the end caps comprising an end cap body which forms an outer circumferential surface of the turnaround passage, and a spacer which is disposed in a recess of the end cap body and forms an inner circumferential surface of the turnaround passage, and crownings being formed at respective opposite ends of the second raceway groove of the carriage and each having the form of a curved surface gently curved toward the turnaround passage, wherein at least a chamfered portion is formed at a corner portion of an end surface of the spacer, which end surface faces the end surface of the carriage, on a distal end side of each of the crownings, the carriage has an R chamfered portion sloped more steeply than the crowning, and the crowning and the R chamfered portion are connected continuously without formation of a corner portion, the chamfered portion of the spacer and the R chamfered portion of the carriage define a valley portion between mutually facing surfaces of the carriage and the spacer, and the rollers roll above the valley portion while striding the valley portion.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 88.0
- Lexical Diversity: 2.67241
- Patent Class: 384.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15730887', '11086910', '12978998', '14670681', '11928263']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7973756565541595
- 35 USC 102 Novelty (BERT): 0.5821508696854731
- Combined Prediction Score: 0.7758531778672909
- Mean Citation Score: 392.653118
- Max Citation Score: 479.45248
- Similarity Product: 442.4419799612426

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