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 10):
A pump as claimed in  claim 1  wherein the piston chamber-forming member carrying a cylindrical air vent chamber having a diameter, a chamber wall, an open inner end and an outer end,\n the air vent chamber is open at its inner end which forms the air vent outlet on the piston-forming element in communication with the reservoir, \n a hollow tube member coaxially within the air vent chamber extending from the outer end of the air vent chamber to a closed distal end of the hollow tube member, an annular space about the tube member within the air vent chamber, \n an air transfer port radially through the tube member providing communication from the annular space into the tube member, \n the tube member having an outer end in communication internally through the piston-forming element with the air inlet port, \n the outer end of the air vent chamber closed to fluid flow therethrough other than through the tube member, \n the air passageway extending from the air vent outlet at the inner end of the air vent chamber through the annular space to the air transfer port and via the air transfer port into the tube member, and from the tube member to the air inlet port, \n the one-way air vent valve including a flexing air vent disc carried on the distal end of the tube member extending radially outwardly from the tube member within the air vent chamber toward the chamber wall of the air vent chamber, \n the air vent disc having an elastically deformable edge portion proximate the chamber wall of the air vent chamber circumferentially thereabout, \n the air vent disc substantially preventing fluid flow in the air vent chamber past the air vent disc in an inward direction, \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): 0.8120742034498138
- 35 USC 102 Novelty (BERT): 0.6098193654918901
- Combined Prediction Score: 0.7918487196540215
- Mean Citation Score: 433.007256
- Max Citation Score: 532.1684
- Similarity Product: 522.910685893917

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