PATENT CLAIM ANALYSIS

Application Number: 16059612
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2018-12
Patent Classification: ["222", "190000"]

Abstract:
A piston pump for dispensing fluid from a reservoir, an improved vacuum relief arrangement in which a passageway for flow of air from the atmosphere into the reservoir is provided at least in part through a piston-forming element of the piston pump.

Claim (Index 15):
A pump as claimed in  claim 8  wherein the diameter of the air vent chamber is less than the diameter of the inner chamber,\n the piston-forming element is reciprocally movable coaxially relative the piston chamber-forming member in cycles of operation in which each cycle includes a retraction stroke and a withdrawal stroke, \n at the end of a one of the retraction stroke and the withdrawal stroke and at the beginning of the other of the retraction stroke and the withdrawal stroke, the air seal disc is moved outwardly out of the open outer end of the air vent chamber and the air seal disc does not engage the chamber wall of the air vent chamber to prevent fluid flow inwardly or outwardly through the open outer end of the air vent chamber, \n the air vent disc elastically deforming away from the chamber wall of the air vent chamber to permit air flow in the air vent chamber past the air vent disc in an inward direction when atmospheric pressure is greater than the pressure in the reservoir by a pressure differential greater than the threshold pressure.

Metadata:
- Claim Count in Document: 47.0
- Percentile: 96.0
- Lexical Diversity: 1.33333
- Patent Class: 222.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15106720', '11145221', '15709731', '14607503', '12457476']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8178409732453162
- 35 USC 102 Novelty (BERT): 0.5870462552665926
- Combined Prediction Score: 0.7947615014474438
- Mean Citation Score: 433.007256
- Max Citation Score: 532.1684
- Similarity Product: 421.62515263781546

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