US3836878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tilting system
Assignee: International Standard Electric Corp
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Filing: 1973-10-31
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Granted: 1974-09-17
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Expires: 1993-10-31
Abstract
Abstract A relay or similar electromagnetic device in which an armature is tilted in response to the operating magnetic flux, and in which an orthogonal tilt freedom is provided to increase the ability of the relay to free sticking contacts, particularly in a double pole arrangement.
Inventors
- 👤 W Minks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:28
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/18; H01H50/24; H01H50/02; H01H50/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
191 words
An electromagnetically operated device for producing a mechanical movement in response to an electrical control signal, comprising: first means including a coil and core for generating a magnetic flux in response to an electric current through said coil; yoke means substantially in magnetic contact with a first end of said core and shaped to provide a flux path from said first end of said core to a position adjacent to the perimeter of said coil at the second end of said core; second means including an armature having an end plate and two side plates forming a U-shaped, sheet metal part, the inside of said end plate engaging said core second end and the corresponding end of said yoke to close the magnetic circuit in operation; and means comprising a wedge shaped bottom portion on the part of said armature end plate adjacent said yoke, said wedge shape providing a high point measured in the plane of said armature end plate whereby said armature may assume a secondary tilt in a plane orthogonal to the plane of tilt produced by closure of said armature end plate against said core second end.
Claim 2
Dependent Claim
191 words
An electromagnetically operated device for producing a mechanical movement in response to an electrical control signal, comprising: first means including a coil and core for generating a magnetic flux in response to an electric current through said coil; yoke means substantially in magnetic contact with a first end of said core and shaped to provide a flux path from said first end of said core to a position adjacent to the perimeter of said coil at the second end of said core; second means including an armature having an end plate and two side plates forming a U-shaped, sheet metal part, the inside of said end plate engaging said core second end and the corresponding end of said yoke to close the magnetic circuit in operation; and means comprising a wedge shaped bottom portion on the part of said armature end plate adjacent said yoke, said wedge shape providing a high point measured in the plane of said armature end plate whereby said armature may assume a secondary tilt in a plane orthogonal to the plane of tilt produced by closure of said armature end plate against said core second end.
Claim 3
Dependent Claim
42 words
Apparatus according to claim 1 in which said wedge shape has a double slope and said high point is substantially at the vertical center line of said plate, whereby said armature secondary tilt may be in either sense in said orthogonal plane.
Claim 4
Dependent Claim
60 words
Apparatus according to claim 2 further defined in that said device is a relay having at least one set of electrical contacts side plates of said armature extEnd generally parallel to said coil and core and toward said first end of said core, and the open ends of said side plates are provided with mechanical linkages to operate said contacts.
Claim 5
Dependent Claim
82 words
Apparatus according to claim 3 in which said relay has two sets of contacts, the moving contact of each set being mechanically controlled through the one of said linkages on a corresponding armature side plate, whereby said armature secondary tilt will occur whenever a contact of either of said set of contacts sticks during operation, said flux path being enhanced on the side of said armature tilted toward said yoke to increase the mechanical force tending to break said stuck contact loose.
Claim 6
Dependent Claim
41 words
Apparatus according to claim 4 in which said yoke means is an L-shaped part of magnetic flux transmissive material, said yoke having a leg extending parallel to said coil and core axial centerline to a position oppposite said core second end.
Claim 7
Dependent Claim
63 words
Apparatus according to claim 4 in which a casing surface is provided to support said yoke leg in flat contact therewith, said armature end plate has an outward projection located at said high point, and said armature end plate bottom edge adjacent said yoke seats on said yoke leg at least partially, said projection providing support for said armature against said casing surface.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |