PATENT CLAIM ANALYSIS

Application Number: 16272626
Application Type: Utility
Filing Date: 2019-02
Publication Date: 2019-06
Patent Classification: ["166", "383000"]

Abstract:
An assembly for hoisting and lowering a drill string of a drilling rig includes a multiple displacement hydraulic cylinder having a blind end, a rod end, and a single piston rod configured for slidable extension and retraction movement within the interior space of the cylinder. The interior space is defined by three chambers, each chamber having a port allowing switchable flow of hydraulic fluid into and out from the cylinder. The assembly also includes a pumping and switching system with hydraulic fluid connections to each port of the cylinder. The pumping and switching system is configured to switch the direction of hydraulic fluid flow through each of the ports of the three chambers, thereby providing the assembly with a plurality of hydraulic fluid flow path combinations. Each flow path combination provides a different speed-to-force ratio for extending or retracting the piston rod, thereby hoisting or lowering the drill string.

Claim (Index 36):
The assembly of  claim 24 , wherein the plurality of hydraulic fluid flow path combinations comprises a hoisting combination wherein:\n a) hydraulic fluid flows from the primary pump into the port of the blind end chamber without hydraulic fluid flowing into the port of the central tube chamber; and b) hydraulic fluid flows from the port of the rod end chamber to a reservoir.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 99.0
- Lexical Diversity: 2.12
- Patent Class: 166.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15116067', '15642954', '16167927', '14014293', '13892020']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8106158617192581
- 35 USC 102 Novelty (BERT): 0.6162511610178291
- Combined Prediction Score: 0.7911793916491152
- Mean Citation Score: 318.224488
- Max Citation Score: 567.4707
- Similarity Product: 524.4178269620775

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test