Abstract A rotary magnetic position indicator which provides an odd number, such as eleven, positions. A magnetic stator structure is provided including an odd number of radially inwardly extending, equally angularly spaced polar projections respectively having inner ends which define a bore, and an equal number of coils is positioned on the stator structure. A permanent magnet rotor member is rotatably mounted in the bore and has one polar projection of one polarity, and two polar projections of the opposite polarity equally spaced on opposite sides of a diameter of the rotor member which extends through the one polar projection. The two rotor member polar projections are respectively aligned with two adjacent stator polar projections when the one rotor member polar projection is aligned with another stator polar projection. Means are provided for selectively energizing the coils, one at a time, thereby to polarize the respective stator polar projection oppositely from the polarization of the one rotor member polar projection thus causing the one rotor member polar projection to align itself with the energized stator polar projection.
Inventors
👤 P Harden
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-29 22:23
CPC Classifications
G; G08; G08B; G08B5/00; G08B5/22; G08B5/24
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
104 words
In a rotary magnetic position indicator: a magnetic stator structure including an odd number of radially inwardly extending, equally angularly spaced polar projections respectively having inner ends defining a bore; and a magnetic rotor member rotatably mounted in said bore, said rotor member having one pole of one polarity and two poles of the opposite polarity thereon, said two poles being respectively aligned with two adjacent ones of said polar projections when said one pole is aligned with another polar projection, each of said rotor member poles having an angular extent generally equal to that of the inner end of one only stator projection.
Claim 2
Dependent Claim
104 words
In a rotary magnetic position indicator: a magnetic stator structure including an odd number of radially inwardly extending, equally angularly spaced polar projections respectively having inner ends defining a bore; and a magnetic rotor member rotatably mounted in said bore, said rotor member having one pole of one polarity and two poles of the opposite polarity thereon, said two poles being respectively aligned with two adjacent ones of said polar projections when said one pole is aligned with another polar projection, each of said rotor member poles having an angular extent generally equal to that of the inner end of one only stator projection.
Claim 3
Dependent Claim
16 words
The indicator of claim 1 wherein said rotor member poles are radially outwardly extending polar projections.
Claim 4
Dependent Claim
13 words
The indicator of claim 2 wherein said rotor member is a permanent magnet.
Claim 5
Dependent Claim
34 words
The indicator of claim 3 wherein said two rotor member polar projections are equally spaced on oppositE sides of a diameter of said rotor member which extends through said one rotor member polar projection.
Claim 6
Dependent Claim
65 words
The indicator of claim 1 wherein said stator structure further includes a coil on each of said polar projections thereof, and means for selectively energizing said coils one at a time thereby to polarize said inner end of the respective polar projection oppositely from the polarization of said one rotor member pole whereby said one rotor member pole aligns itself with the energized polar projection.
Claim 7
Dependent Claim
46 words
The indicator of claim 1 wherein said stator structure further includes an odd plurality of field coils equal in number to the number of said polar projections, each of said coils spanning three adjacent projections, and means for selectively energizing said coils one at a time.