PATENT CLAIM ANALYSIS

Application Number: 15941008
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-08
Patent Classification: ["073", "861470"]

Abstract:
The invention discloses a fluid sensing device provided in a flow path through which fluid flows, including a base fixed in the flow path; a piston core rod disposed in the base and connected to the base through an elastic member, the piston core rod being provided with a pushing surface pushed by the fluid in the flow path; a magnet provided on the piston core rod; a magnetic sensing device provided on a side surface of the piston core rod to sense change of magnetic line received as change of position of the magnet, thereby determining whether fluid flows in flow path; wherein the elastic member is disposed such that direction of the restoring force thereof is opposite to the direction of fluid flow in flow path. The present invention has fewer parts and easy production, and can reduce judgement difference caused by low flow rate.

Claim (Index 3):
The fluid sensing device according to  claim 2 , wherein an inner part of the base is hollow and communicated with a downstream end of the pipe body along a flow direction of the fluid in the pipe body, the base is provided with a first through hole, the elastic member is located inside the base, the elastic member is arranged to be compressed along the flow direction of the fluid in the pipe body, the piston core rod is disposed along the flow direction of the fluid in the pipe body and a upstream end of the piston core rod along the flow direction of the fluid in the pipe body passes through the first through hole and is located outside the base, inside the base, the piston core rod is connected to the base through a downstream end of the piston core rod along the flow direction of the fluid in the pipe body by the elastic member, the pushing surface is located on the upstream end of the piston core rod along the flow direction of the fluid in the pipe body, and the upstream end of the piston core rod along the flow direction of the fluid in the pipe body is composed of a first part which can not pass through the first through hole and a second part which can pass through the first through hole along the flow direction of the fluid in the pipe body, and is in clearance fit with the first through hole.

Metadata:
- Claim Count in Document: 19.0
- Percentile: 90.0
- Lexical Diversity: 2.15068
- Patent Class: 73.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['13509771', '10910380', '13164852', '14913602', '13603171']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7119378755385484
- 35 USC 102 Novelty (BERT): 0.4744894274789461
- Combined Prediction Score: 0.6881930307325881
- Mean Citation Score: 172.23641200000003
- Max Citation Score: 186.85773
- Similarity Product: 143.90652163093148

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test