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 9):
The system of  claim 8 , wherein the reversible hydraulic pump includes an inlet port, and the system further comprises a reservoir of the hydraulic fluid connected to the inlet port of the reversible hydraulic pump, wherein the motor-generator operates in the motor mode to rotate the rotor shaft and the coupling shaft in a forward direction so that the hydraulic pump pumps the hydraulic fluid from the reservoir through the inlet port to the pressure chamber to displace the piston in the cylinder barrel and raise the rod string in the upstroke, and the motor-generator operates in the generator mode in which the weight of the rod string lowers relative the piston in the cylinder barrel in a downstroke to pump the hydraulic fluid from the pressure chamber into the outlet port of the reversible hydraulic pump, and from the inlet port of the reversible hydraulic pump to the reservoir to rotate the coupling shaft and the rotor shaft in the reverse direction such that the motor-generator generates electricity.

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): 0.8150114414190613
- 35 USC 102 Novelty (BERT): 0.5473373267889451
- Combined Prediction Score: 0.7882440299560497
- Mean Citation Score: 368.470156
- Max Citation Score: 395.69537
- Similarity Product: 318.5512853776115

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