US3753180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary solenoid
Assignee: LUCAS LEDEX Inc
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Filing: 1972-05-23
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Granted: 1973-08-14
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Expires: 1992-05-23
Abstract
Abstract A rotary solenoid comprises a ferromagnetic core assembly flux linked to an electromagnetic coil. The core assembly comprises confronting pole pieces having flat face portions spaced apart to define an air gap. The rotary solenoid includes a rotary assembly comprising a shaft adjacent said pole pieces journalled to said core assembly for rotation about an axis perpendicular to said pole faces. The rotary assembly includes an armature plate fixed to said shaft and projecting outwardly from said shaft for entry into said air gap. The rotary solenoid includes non-magnetic spacer members, one disposed on each side of said armature plate, said spacer members sized with said aramture plate for a close fit between said pole faces, said spacer members cooperating with said pole faces to restrain said rotary assembly against axial movements.
Inventors
- 👤 W Sommer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:18
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/14; H01F7/145
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
175 words
In a rotary solenoid, the combination comprising a coil, a ferromagnetic core assembly flux linked with said coil, said core assembly including a pair of confronting plate members each having a pole piece projecting therefrom, said core assembly including means supporting said plate members in spaced apart relation, said pole pieces projecting one toward the other and having flat parallel face portions spaced apart to define an air gap therebetween, a rotary assembly including a shaft and an armature fixed to said shaft, means mounting said shaft to said core assembly for rotation about an axis perpendicular to said face portions, said armature comprising a ferromagnetic plate portion having flat sides perpendicular to said axis, said plate portion projecting outwardly from said shaft for movement in said air gap, non-magnetic spacer members encircling said shaft and contacting opposite sides of said plate portion, said plate portion and said spacer members received between said face portions, said spacer members contacting said face portions to support said plate portion against axial movement relative to said pole pieces.
Claim 2
Dependent Claim
175 words
In a rotary solenoid, the combination comprising a coil, a ferromagnetic core assembly flux linked with said coil, said core assembly including a pair of confronting plate members each having a pole piece projecting therefrom, said core assembly including means supporting said plate members in spaced apart relation, said pole pieces projecting one toward the other and having flat parallel face portions spaced apart to define an air gap therebetween, a rotary assembly including a shaft and an armature fixed to said shaft, means mounting said shaft to said core assembly for rotation about an axis perpendicular to said face portions, said armature comprising a ferromagnetic plate portion having flat sides perpendicular to said axis, said plate portion projecting outwardly from said shaft for movement in said air gap, non-magnetic spacer members encircling said shaft and contacting opposite sides of said plate portion, said plate portion and said spacer members received between said face portions, said spacer members contacting said face portions to support said plate portion against axial movement relative to said pole pieces.
Claim 3
Dependent Claim
42 words
The rotary solenoid of claim 1 wherein said plate portion has an arcuate margin connecting from a radially disposed leading margin to a radially disposed trailing margin, said arcuate margin subtending an angle not exceeding 180* between said leading and trailing margins.
Claim 4
Dependent Claim
22 words
The rotary solenoid of claim 2 in which said arcuate margin subtends an angle of 180* between said leading and trailing margins.
Claim 5
Dependent Claim
56 words
The rotary solenoid of claim 3 wherein each said face portion is an approximate 180* annular segment concentric to said rotary axis, and including stop means coacting between said core assembly and said rotary assembly to confine said rotary assembly to rotary positions in which a part of said plate portion remains in said air gap.
Claim 6
Dependent Claim
40 words
The rotary solenoid of claim 4 wherein said stop means comprises a pin member extending between said end plates, a portion of said pin member projecting into said air gap for engagement with the leading margin of said plate portion.
Claim 7
Dependent Claim
61 words
The rotary solenoid of claim 5 including resilient means coacting between said rotary assembly and said core assembly to bias said rotary assembly to a position in which the trailing margin of said plate portion engages said stop means, said plate portion, upon energization of said coil, being urged magnetically through said air gap against the bias of said resilient means.
Claim 8
Dependent Claim
22 words
The rotary solenoid of claim 6 wherein said pole pieces have wing means to augment the magnetic urging of said plate portion.
Claim 9
Dependent Claim
114 words
In a rotary solenoid of the type comprising a coil, a ferromagnetic core assembly flux linked with said coil, said core assembly including a pair of pole pieces having flat parallel face portions spaced apart to define an air gap therebetween, and a rotary assembly including an armature supported for rotation about an axis perpendicular to said face portions, said armature including a ferromagnetic plate portion having flat sides perpendicular to said axis and movable in said air gap, the improvement comprising non-magnetic bearing means disposed in said air gap and coacting with said pole pieces to support said plate portion centrally in said air gap and away from contact with said face portions.
Claim 10
Dependent Claim
114 words
In a rotary solenoid of the type comprising a coil, a ferromagnetic core assembly flux linked with said coil, said core assembly including a pair of pole pieces having flat parallel face portions spaced apart to define an air gap therebetween, and a rotary assembly including an armature supported for rotation about an axis perpendicular to said face portions, said armature including a ferromagnetic plate portion having flat sides perpendicular to said axis and movable in said air gap, the improvement comprising non-magnetic bearing means disposed in said air gap and coacting with said pole pieces to support said plate portion centrally in said air gap and away from contact with said face portions.
Claim 11
Dependent Claim
148 words
In a rotary solenoid of the type comprising a coil, a ferromagnetic core assembly flux linked with said coil, said core assembly including a pair of pole pieces having flat parallel face portions spaced apart to define an air gap therebetween, and a rotary assembly including an armature supported for rotation about an axis perpendicular to said face portions, said armature including a ferromagnetic plate portion having flat sides perpendicular to said axis and movable in said air gap, the improvements wherein Said plate portion is an annular segment concentric to said axis of rotation, said plate portion having a radially disposed leading margin for movement through said air gap and having a radially disposed trailing margin, and wherein said armature or one of said pole pieces includes wing means projecting axially therefrom to augment magnetic attraction between at least one of said pole pieces and said armature.
Claim 12
Dependent Claim
148 words
In a rotary solenoid of the type comprising a coil, a ferromagnetic core assembly flux linked with said coil, said core assembly including a pair of pole pieces having flat parallel face portions spaced apart to define an air gap therebetween, and a rotary assembly including an armature supported for rotation about an axis perpendicular to said face portions, said armature including a ferromagnetic plate portion having flat sides perpendicular to said axis and movable in said air gap, the improvements wherein Said plate portion is an annular segment concentric to said axis of rotation, said plate portion having a radially disposed leading margin for movement through said air gap and having a radially disposed trailing margin, and wherein said armature or one of said pole pieces includes wing means projecting axially therefrom to augment magnetic attraction between at least one of said pole pieces and said armature.
References Cited (Backward Citations)
US3147411A
Cited
US3435394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |