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 16):
The system of  claim 14 , wherein the first polished rod is connected to a first sucker rod of the first rod string, and the second polished rod is connected to a second sucker rod of the second rod string; such that the combined weights of the first polished rod and the first sucker rod urge the first piston downward to assist the reversible hydraulic pump when the variable frequency drive actuates the motor-generator to operate in the motor mode; and the combined weights of the second polished rod and the second rod pump urge the second piston downward to assist the reversible hydraulic pump when the variable frequency drive actuates the motor-generator to operate in the reverse motor mode.

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): 0.8147374806287782
- 35 USC 102 Novelty (BERT): 0.5478627248609196
- Combined Prediction Score: 0.7880500050519923
- Mean Citation Score: 368.470156
- Max Citation Score: 395.69537
- Similarity Product: 329.90573540798425

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