Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
174 words
A flow meter comprising: a movable member mounted in the flow of a running fluid so as to be moved as a function of said flow; a composite wire which is formed of a core and shell having different coercive forces and mounted on the movable member, so as to move in a movement path the alignment direction of the respective magnetic domains of either of the core and shell of said composite wire being reversed when an external magnetic field is applied to said composite wire at a threshold level; a pulse generator including a pair of permanent magnets arranged to face the movement path of the composite magnetic wire, a magnetic core positioned adjacent to one of the paired permanent magnets and a coil wound around the core; counter means coupled to said pulse generator for counting pulses generated from said pulse generator; and display means coupled to said counter means for indicating a flow of said running fluid as a function of the number of pulses counted by said counter means.
Claim 2
Dependent Claim
174 words
A flow meter comprising: a movable member mounted in the flow of a running fluid so as to be moved as a function of said flow; a composite wire which is formed of a core and shell having different coercive forces and mounted on the movable member, so as to move in a movement path the alignment direction of the respective magnetic domains of either of the core and shell of said composite wire being reversed when an external magnetic field is applied to said composite wire at a threshold level; a pulse generator including a pair of permanent magnets arranged to face the movement path of the composite magnetic wire, a magnetic core positioned adjacent to one of the paired permanent magnets and a coil wound around the core; counter means coupled to said pulse generator for counting pulses generated from said pulse generator; and display means coupled to said counter means for indicating a flow of said running fluid as a function of the number of pulses counted by said counter means.
Claim 3
Dependent Claim
30 words
The flow meter according to claim 1, wherein said movable member is a rotor provided in a passage through which the running fluid flows, so as to be rotated thereby.
Claim 4
Dependent Claim
30 words
The flow meter system according to claim 2, wherein the rotor is a fan wheel, to which said composite magnetic wire is mounted for movement in a rotary movement path.
Claim 5
Dependent Claim
23 words
The flow meter system according to claim 2, wherein the rotor is a fan wheel, in which said composite magnetic wire is embedded.
Claim 6
Dependent Claim
29 words
The flow meter according to claim 4, wherein said fan wheel has plurality of blades thereon, said composite magnetic wire being mounted to at least one of said blades.
Claim 7
Dependent Claim
15 words
The flow meter system according to claim 1, wherein said counter is a CMOS counter.
Claim 8
Dependent Claim
30 words
The flow meter system according to claim 1, wherein said display means indicates the flow of said running fluid proportional to the number of pulses counted by said counter means.
Claim 9
Dependent Claim
32 words
The flow meter according to claim 1, wherein said paired permanent magnets of said pulse generator face each other, said magnets having their poles of opposite polarities set adjacent to each other.
Claim 10
Dependent Claim
24 words
The flow meter according to claim 1, wherein said pulse generator further comprises a rectifier circuit coupled between said coil and said counter means.