US3659124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear motion motor with rectangular coil construction
Assignee: Vernitron Corp
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Filing: 1970-09-28
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Granted: 1972-04-25
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Expires: 1990-09-28
Abstract
Abstract A linear motion motor includes a reciprocatable armature carried by a stator comprising a plate with four parallel non-magnetic rods. A rectangular coil is wound on the rods and is supported thereby only at inside corners of the coil. The stator includes a permanent bar magnet secured at one end to one end wall of a Ushaped magnetic frame. The other end of the bar magnet is formed with a rectangular pole piece disposed inside a rectangular hole in the other end wall of the frame. The coil extends longitudinally between the air gap defined between the edges of the pole piece and hole in the other end wall. The rods are slidably engaged in corner notches formed in the pole piece.
Inventors
- 👤 Raymond Lathrop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:28
CPC Classifications
H; H02; H02K; H02K41/00; H02K41/02; H02K41/035; H02K41/0352; H02K41/0354; H02K41/0356
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
192 words
A linear motion motor comprising a stator having a rectangular U-shaped magnetic frame with parallel end walls, a first one of said walls having a rectangular hole therein to define a first pole piece, a permanent bar magnet secured at one end to the second of said end walls and extending perpendicuarly thereto toward said first end wall, said bar magnet terminating in a rectangular second pole piece disposed inside said hole coplanar with said first end wall, said second pole piece being peripherally spaced from said hole to define a rectangular air gap thereat, a reciprocal armature supported by said stator, said armature comprising a rectangular helical coil insulated wire extending longitudinally through said air gap to enclose said bar magnet and said second pole piece; and a coil support means comprising a flat rectangular shaped plate and four rods secured at one end thereof near each of the corners of said plate and extending parallel to each other and perpendicular to said plate, said coil being wound on said rods and wherein said second pole piece has corner notches formed therein, said rods being respectively slidably engaged in said notches.
Claim 2
Dependent Claim
192 words
A linear motion motor comprising a stator having a rectangular U-shaped magnetic frame with parallel end walls, a first one of said walls having a rectangular hole therein to define a first pole piece, a permanent bar magnet secured at one end to the second of said end walls and extending perpendicuarly thereto toward said first end wall, said bar magnet terminating in a rectangular second pole piece disposed inside said hole coplanar with said first end wall, said second pole piece being peripherally spaced from said hole to define a rectangular air gap thereat, a reciprocal armature supported by said stator, said armature comprising a rectangular helical coil insulated wire extending longitudinally through said air gap to enclose said bar magnet and said second pole piece; and a coil support means comprising a flat rectangular shaped plate and four rods secured at one end thereof near each of the corners of said plate and extending parallel to each other and perpendicular to said plate, said coil being wound on said rods and wherein said second pole piece has corner notches formed therein, said rods being respectively slidably engaged in said notches.
Claim 3
Dependent Claim
23 words
A linear motion motor as defined in claim 1, further comprising a driven member attached to said plate and reciprocatable with said armature.
Claim 4
Dependent Claim
62 words
A linear motion motor as defined in claim 1, wherein said coil has end terminals to which a reversible direct current source may be connected, so that said armature moves axially in one direction by magnetic interaction with the magnet when the current flows in one direction, and said armature moves axially in an opposite direction when the current flow is reversed.
Claim 5
Dependent Claim
65 words
A linear motion motor as defined in claim 2, wherein said plate supporting said coil is slightly larger than said hole in said end wall to serve as an abutment limiting inward movement of said armature into said stator, said plate having holes for ventilating the interior of said coil and, attaching said driven member to said armature, thereby minimizing the mass of said armature.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |