PATENT CLAIM ANALYSIS

Application Number: 16358113
Application Type: Utility
Filing Date: 2019-03
Publication Date: 2019-09
Patent Classification: ["417", "375000"]

Abstract:
A system for energy recovery from a rod pump includes, in an exemplary embodiment, a hydraulic cylinder having a barrel, a piston, and a pressure chamber; the piston connected to a rod string of the rod pump; a reversible hydraulic pump connected to the pressure chamber; and a motor-generator having a rotor shaft connected to a coupling shaft of the pump; wherein the motor-generator operates in a motor mode to rotate the rotor and coupling shafts in a forward direction so that the hydraulic pump pumps hydraulic fluid to the pressure chamber to raise the piston and rod string in an upstroke, and operates in a generator mode in which a weight of the rod string displaces the piston in a downstroke to pump hydraulic fluid from the pressure chamber to rotate the pump coupling shaft and the rotor shaft in a reverse direction such that the motor-generator generates electricity.

Claim (Index 18):
The method of  claim 17 , wherein connecting the reversible hydraulic pump to the pressure chamber of the hydraulic cylinder includes connecting an outlet port of the reversible hydraulic pump to the pressure chamber by a first hydraulic fluid line such that the reversible hydraulic pump receives the hydraulic fluid through an inlet port thereof and pumps the hydraulic fluid out the outlet port during the motor mode, and during the generator mode, the weight of the polished rod urges the piston downward to force the hydraulic fluid from the pressure chamber through the first hydraulic line and out the inlet port to cause the coupling shaft and the rotor shaft to rotate in the reverse direction.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 99.0
- Lexical Diversity: 2.75862
- Patent Class: 417.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['14680740', '16013408', '15013210', '12803478', '15258755']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8152850448286495
- 35 USC 102 Novelty (BERT): 0.5468119436833404
- Combined Prediction Score: 0.7884377347141186
- Mean Citation Score: 368.470156
- Max Citation Score: 395.69537
- Similarity Product: 307.1998070927668

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

Dataset: test