US3634793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic relay
Assignee: Panasonic Electric Works Co Ltd
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Filing: 1970-01-14
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Granted: 1972-01-11
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Expires: 1990-01-14
Abstract
Abstract An electromagnetic relay has a hollow coil with two facing pole shoes and an armature pivotally mounted within the hollow coil. A pair of permanent magnets having different temperature coefficients are positioned adjacent the armature. Contact springs which are actuated by the armature have mounted thereon contacts for engaging with stationary contacts.
Inventors
- 👤 Hans Sauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:37
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/22; H01H51/2272; H01H47/00; H01H47/02; H01H2047/025
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
159 words
An electromagnetic relay comprising a baseplate, a hollow magnetizing coil structure mounted on said baseplate and having two facing pole shoes, an armature of magnetic material pivotably mounted between said pole shoes and within said hollow coil structure to define with said coil structure magnetic flux circuits, a pair of permanent magnets positioned adjacent said armature for producing a polarized magnetic flux between said pole shoes and said armature, bearing plates on opposite sides of said armature and providing a pivotal support for said armature, contact means operatively associated with said armature and including a pair of contact springs, a pair of actuating elements secured to said armature for transmitting movement of said armature to said contact springs, spring members, adjustable lug members associated with said spring members, a stop member, an adjustable stool member, said spring members straddling said stop member and biased to bear against said stool member to hold said armature in a stable central position.
Claim 2
Dependent Claim
159 words
An electromagnetic relay comprising a baseplate, a hollow magnetizing coil structure mounted on said baseplate and having two facing pole shoes, an armature of magnetic material pivotably mounted between said pole shoes and within said hollow coil structure to define with said coil structure magnetic flux circuits, a pair of permanent magnets positioned adjacent said armature for producing a polarized magnetic flux between said pole shoes and said armature, bearing plates on opposite sides of said armature and providing a pivotal support for said armature, contact means operatively associated with said armature and including a pair of contact springs, a pair of actuating elements secured to said armature for transmitting movement of said armature to said contact springs, spring members, adjustable lug members associated with said spring members, a stop member, an adjustable stool member, said spring members straddling said stop member and biased to bear against said stool member to hold said armature in a stable central position.
Claim 3
Dependent Claim
14 words
A relay according to claim 1, wherein said stool member is adjustable by bending.
Claim 4
Dependent Claim
21 words
A relay according to claim 1, wherein contact always occurs only between at least one spring member and said stop member.
Claim 5
Dependent Claim
118 words
An electromagnetic relay comprising spaced pole means for establishing a magnetic field, an armature of magnetic material pivotably mounted between said pole means to define therewith magnetic flux circuits, at least one permanent magnet positioned adjacent said armature for producing a permanent magnetic field acting upon said armature, said permanent magnet having a temperature coefficient of at least 0.2 percent per *C., and contact means operatively associated with said armature and including spring contact means, said contact spring means and the permanent magnet field being such that the force exerted on the armature by the contact spring means is equal to a substantial portion of the force exerted on the armature by said at least one permanent magnet.
Claim 6
Dependent Claim
118 words
An electromagnetic relay comprising spaced pole means for establishing a magnetic field, an armature of magnetic material pivotably mounted between said pole means to define therewith magnetic flux circuits, at least one permanent magnet positioned adjacent said armature for producing a permanent magnetic field acting upon said armature, said permanent magnet having a temperature coefficient of at least 0.2 percent per *C., and contact means operatively associated with said armature and including spring contact means, said contact spring means and the permanent magnet field being such that the force exerted on the armature by the contact spring means is equal to a substantial portion of the force exerted on the armature by said at least one permanent magnet.
Claim 7
Dependent Claim
83 words
A relay according to claim 4 wherein said contact means includes a plurality of elongated spring blades, pip means positioned between said spring blades and adjustable in a longitudinal direction and/or in a transverse direction, said contact means including bifurcated contact members fastened on said spring blades at a joint therebetween, said contact members having elongated contact areas for contacting said spring blades along a path which exceeds the length of the path of movement of said joint when displaced by said armature.
Claim 8
Dependent Claim
35 words
A relay according to 4 and comprising a pair of permanent magnets wherein one of said permanent magnet has a temperature coefficient below 0.05 and the other permanent magnet has a temperature coefficient above 0.2.
Claim 9
Dependent Claim
35 words
A relay according to 4 and comprising a pair of permanent magnets wherein one of said permanent magnet has a temperature coefficient below 0.05 and the other permanent magnet has a temperature coefficient above 0.2.
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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |