US3626337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic relay with permanent magnet latching
Assignee: International Standard Electric Corp
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Filing: 1970-07-29
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Granted: 1971-12-07
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Expires: 1990-07-29
Abstract
Abstract A diaphragm relay uses a paramagnetic diaphragm as part of the electromagnetic circuit and may also use the diaphragm as part of the electrical contact closing circuit. A third function is provided for the diaphragm herein. The diaphragm is also interposed within a permanent magnet circuit which acts to latch the diaphragm in an operated condition.
Inventors
- 👤 Harry Stanley Woodhead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:01
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/28; H01H51/287
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
187 words
A bistable polarized magnetically holding relay including two contact units disposed at opposite ends of a permanent bar magnet, each contact unit comprising a first magnetic circuit including an inner magnet member, an outer magnetic member, and a contact member disposed therebetween, said inner magnetic member extending through and sealed in an aperture in said outer magnetic member by a nonmagnetic seal, said contact member comprising at least one moving contact comprised of laminae of magnetic material disposed substantially normal to the axis of the aperture, means adjacent said first magnetic circuit for completing a second magnetic circuit threading the permanent magnet and inner magnetic member, magnetic winding disposed to develop flux for flow through both said magnetic circuits, means for mounting the laminae in said contact unit for movement into contact with or separated from cooperating fixed contacts in response to pulsing of said operating winding so as to bring about a change in the amount of flux threading the laminae by the diversion of a proportion of the magnetic flux of the permanent magnet from threading one of said magnetic circuits to threading the other.
Claim 2
Dependent Claim
187 words
A bistable polarized magnetically holding relay including two contact units disposed at opposite ends of a permanent bar magnet, each contact unit comprising a first magnetic circuit including an inner magnet member, an outer magnetic member, and a contact member disposed therebetween, said inner magnetic member extending through and sealed in an aperture in said outer magnetic member by a nonmagnetic seal, said contact member comprising at least one moving contact comprised of laminae of magnetic material disposed substantially normal to the axis of the aperture, means adjacent said first magnetic circuit for completing a second magnetic circuit threading the permanent magnet and inner magnetic member, magnetic winding disposed to develop flux for flow through both said magnetic circuits, means for mounting the laminae in said contact unit for movement into contact with or separated from cooperating fixed contacts in response to pulsing of said operating winding so as to bring about a change in the amount of flux threading the laminae by the diversion of a proportion of the magnetic flux of the permanent magnet from threading one of said magnetic circuits to threading the other.
Claim 3
Dependent Claim
29 words
A relay as claimed in claim l, wherein at least one side of the magnetic material of the laminae is faced with at least one layer of nonmagnetic material.
Claim 4
Dependent Claim
36 words
A relay as claimed in claim 1, wherein at least one contact unit contains only one moving contact, and moving contact being provided by a diaphragm whose central area forms the contact-making area of the contact.
Claim 5
Dependent Claim
52 words
A relay as claimed in claim 3, wherein each said diaphragm is in contact at its periphery with its associated outer magnetic member and has therein three or more apertures so formed that the central area of the diaphragm is linked with a peripheral area by three or more slender arcuate arms.
Claim 6
Dependent Claim
29 words
A relay as claimed in claim 3, wherein said diaphragm consists of a disc from whose periphery protrude three or more arcuate tongues whose extremities are free to pivot.
Claim 7
Dependent Claim
30 words
A relay as claimed in claim 5, wherein the free end of each arcuate tongue terminates in a U-shaped portion whose limbs are substantially at right angles to the disc.
Claim 8
Dependent Claim
57 words
A relay as claimed in claim 1, which includes at least one contact unit containing a plurality of moving contacts each having an involute form consisting of a contact-making area linked by one or more arms to an anchorage area by which it is secured to an anchorage post sealed through a wall of that contact unit.
Claim 9
Dependent Claim
18 words
A relay as claimed in claim 7, wherein the involute laminae of each contact unit are substantially coplanar.
Claim 10
Dependent Claim
15 words
A relay as claimed in claim l, wherein the inner magnetic members form fixed contacts.
Claim 11
Dependent Claim
15 words
A relay as claimed in claim l, wherein the fixed contacts have annular contact surfaces.
Claim 12
Dependent Claim
21 words
A relay as claimed in claim 1, wherein there is structure for hermetically sealing one or more of the contact units.
Claim 13
Dependent Claim
38 words
A relay as claimed in claim l, wherein there is a tube of magnetic material which forms part of the second magnetic circuit and which surrounds the permanent magnet and which is itself surrounded by the operating winding.
Claim 14
Dependent Claim
35 words
A relay as claimed in claim 12, wherein there is a cover member of magnetic material which at least partially encloses the operating winding, and which magnetically links said tube with said outer magnetic members.
References Cited (Backward Citations)
US3331040A
Cited
US3467923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |