PATENT CLAIM ANALYSIS

Application Number: 15752278
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["239", "585500"]

Abstract:
A movable core is movable relative to a needle main body of a needle. A stationary core is placed on an opposite side of the movable core, which is opposite from a valve seat. A spring is operable to urge the needle and the movable core toward the valve seat. A spring seat is shaped into a ring form and is placed on a radially outer side of the needle main body at the valve seat side of the movable core. The spring is placed between the movable core and the spring seat and is operable to urge the movable core toward the stationary core. A guide is placed on the valve seat side of the movable core in an inside of a housing. An inner wall of the guide is slidable relative to an outer wall of the spring seat to guide reciprocation of the needle.

Claim (Index 1):
A fuel injection device comprising:\n a nozzle that includes an injection hole, through which fuel is injected, and a valve seat, which is formed around the injection hole and is shaped into a ring form; a housing that is shaped into a tubular form and has one end connected to the nozzle, wherein the housing has a fuel passage, which is formed in an inside of the housing and is communicated with the injection hole; a needle that has:\n a needle main body, which is shaped into a rod form; \n a seal portion, which is formed at one end of the needle main body such that the seal portion is contactable with the valve seat; and \n a flange, which is formed on a radially outer side of the needle main body at another end of the needle main body or around the another end of the needle main body, wherein the needle is installed such that the needle is reciprocatable in the fuel passage, and when the seal portion moves away from or contacts the valve seat, the needle opens or closes the injection hole; \n a movable core that is installed such that the movable core is movable relative to the needle main body and has a surface, which is opposite from the valve seat and is contactable with a surface of the flange located on the valve seat side; a stationary core that is installed on an opposite side of the movable core, which is opposite from the valve seat, in the inside of the housing; a valve seat side urging member that is placed on the opposite side of the needle, which is opposite from the valve seat, wherein the valve seat side urging member is operable to urge the needle and the movable core toward the valve seat; a coil that is operable to attract the movable core toward the stationary core such that the movable core contacts the flange and drives the needle toward the opposite side, which is opposite from the valve seat, when the coil is energized; and a spring seat that is shaped into a ring form and is placed on a radially outer side of the needle main body on the valve seat side of the movable core; a stationary core side urging member that is placed between the movable core and the spring seat and has an urging force, which is smaller than an urging force of the valve seat side urging member, wherein the stationary core side urging member is operable to urge the movable core toward the stationary core; and a guide that is placed on the valve seat side of the movable core in the inside of the housing, wherein an inner wall of the guide is slidable relative to an outer wall of the spring seat to guide reciprocation of the needle.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 88.0
- Lexical Diversity: 3.29787
- Patent Class: 239.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15749909', '15564515', '15500977', '13767209', '13239920']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8339607786630675
- 35 USC 102 Novelty (BERT): 0.5679625723707857
- Combined Prediction Score: 0.8073609580338393
- Mean Citation Score: 391.69508600000006
- Max Citation Score: 458.68375
- Similarity Product: 444.78783717818567

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