PATENT CLAIM ANALYSIS

Application Number: 15764542
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-12
Patent Classification: ["166", "380000"]

Abstract:
A packer box for use in petroleum drilling is described, in which a rotatable packer element arranged centrically in a packer retainer that is orientable and lockable in a sealing position in a housing in the packer box is arranged to seal against a passing drill string, the packer element comprising a mounting device provided with packer slide rings at the ends of the mounting device and being in sealing abutment against slide rings arranged internally in the packer retainer, and an internal, flexible packer sleeve which is arranged to abut sealingly against the drill string with an external pressure from a fluid in a volume-compensated annular space in the packer retainer, wherein the mounting device includes several channels perforating the mounting device, and clamping devices for fixing the packer sleeve to the end portions of the mounting device. A method of installing or withdrawing a packer element in, respectively from, a packer box is described as well.

Claim (Index 2):
The packer box according to  claim 1 , wherein the ends of the packer element rest against supporting rings arranged at an upper end piece and a lower end piece of the packer retainer; the supporting rings being provided with linings with openings adapted to the dimension of the drill string.

Metadata:
- Claim Count in Document: 4.0
- Percentile: 90.0
- Lexical Diversity: 2.21053
- Patent Class: 166.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['12347443', '13991857', '15297141', '13041079', '15575492']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7886473890353857
- 35 USC 102 Novelty (BERT): 0.4868325267798455
- Combined Prediction Score: 0.7584659028098317
- Mean Citation Score: 229.17057000000003
- Max Citation Score: 239.10081
- Similarity Product: 186.2406154620909

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