PATENT CLAIM ANALYSIS

Application Number: 15874218
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["074", "424820"]

Abstract:
A dustproof device is provided for use with a ball screw which includes a screw rod and a nut mounted around the screw rod. The dustproof device includes an annular body and an elastic valve plate. The annular body is disposed inside the nut and penetrated by the screw rod and has an outer annular surface provided with a debris exit. The debris exit has one end in communication with a spiral passage formed between the screw rod and the nut. The elastic valve plate, which is provided at the opposite end of the debris exit of the annular body, can be pushed open by a fluid and thus opens the debris exit, allowing the debris generated by the ball screw to be discharged through the debris exit along with the fluid, thereby contributing to extending the service life of the ball screw.

Claim (Index 1):
A dustproof device for a ball screw, wherein the ball screw comprises a screw rod and a nut mounted around the screw rod, the screw rod has a periphery provided with an external spiral groove, the nut has an inner periphery provided with an internal spiral groove, and the external spiral groove of the screw rod and the internal spiral groove of the nut correspond to each other and jointly form a spiral passage, the dustproof device comprising:\n an annular body disposed inside the nut and penetrated by the screw rod, the annular body having an inner annular surface provided with a dustproof lip abutting against the periphery of the screw rod, an outer annular surface provided with at least one debris exit, a first lateral surface, and a second lateral surface, the at least one debris exit being communicated with the first lateral surface to form a first opening and communicated with the second lateral surface to form a second opening, the at least one debris exit being communicated with the spiral passage via the first opening; and at least one elastic valve plate, which is connected to the annular body and blocks over the second opening.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 86.0
- Lexical Diversity: 2.30303
- Patent Class: 74.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15656765', '12003590', '13264688', '15338190', '11546351']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7994862566137478
- 35 USC 102 Novelty (BERT): 0.4273233711276457
- Combined Prediction Score: 0.7622699680651377
- Mean Citation Score: 178.211608
- Max Citation Score: 189.97968
- Similarity Product: 163.6932603829479

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