PATENT CLAIM ANALYSIS

Application Number: 15939729
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["384", "044000"]

Abstract:
A linear motion guide unit restrains fluctuations in sliding friction and generation of heat by correcting the postures of rollers having been inclined in a no-load area such that their axes become orthogonal to a guide surface of a carriage to thereby introduce the rollers in proper postures into a load area. A retainer plate of the guide unit has a guide surface for guiding end surfaces of the rollers and has protrusions protruding from the guide surface at its opposite end portions facing crownings of the carriage. The rollers rolling from a turnaround passage to a load-carrying race are pressed by the protrusions toward the guide surface of the carriage so as to be arrayed in such a posture that the axes of the rollers become orthogonal to the guide surface on the inlet side of the crowning of the carriage, whereby the occurrence of roller skew is prevented.

Claim (Index 1):
A linear motion guide unit comprising:\n a guide rail having first raceway surfaces extending in a longitudinal direction on respective opposite longitudinal sides of the guide rail, and a slider which straddles the guide rail, has second raceway surfaces facing the respective first raceway surfaces, and slides in relation to the guide rail via rollers which serve as rolling elements and roll in load-carrying races composed respectively of the first raceway surfaces and the second raceway surfaces, wherein the slider has a carriage which has the second raceway surfaces and return passages extending in parallel with the second raceway surfaces, end caps fixedly attached to respective longitudinally opposite end surfaces of the carriage, the rollers rolling in circulating circuits composed respectively of the load-carrying races, the return passages, and turnaround passages formed in the end caps for establishing communication between the load-carrying races and the return passages, and retainer plates disposed along the respective load-carrying races and adapted to retain the rollers to the slider; the carriage has first guide surfaces adapted to guide one end surfaces of the rollers and extending along the respective load-carrying races extending in the longitudinal direction, and gently curved crownings formed at opposite end portions of the second raceway surfaces for allowing the rollers to smoothly enter load areas of the load-carrying races from no-load areas of the load-carrying races; the retainer plates have second guide surfaces adapted to guide the other end surfaces of the rollers, and protrusions protruding from the second guide surfaces at opposite end portions thereof facing the respective crownings; and the rollers rolling from the turnaround passages to the load-carrying races are pressed toward the first guide surfaces by the protrusions so as to be arrayed in such a posture that axes of the rollers become orthogonal to the first guide surfaces on an inlet side of the crownings, thereby preventing the occurrence of skew of the rollers.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 90.0
- Lexical Diversity: 1.90123
- Patent Class: 384.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13661573', '11928263', '15730887', '15903191', '15435575']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7942992595409636
- 35 USC 102 Novelty (BERT): 0.5341765468926869
- Combined Prediction Score: 0.768286988276136
- Mean Citation Score: 350.165288
- Max Citation Score: 369.14163
- Similarity Product: 343.8166883571196

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