US3707691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic flat-type relay
Assignee: International Standard Electric Corp
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Filing: 1971-06-02
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Granted: 1972-12-26
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Expires: 1991-06-02
Abstract
Abstract An electromagnetic flat-type relay with a pressure spring permanently biased engages a slewably supported tilting member carrying the movable contact member, exerting opposite torques thereupon in both the normal and the operating position of the magnet armature. In order to avoid a sticking of the contacts said magnet armature merely performs the task of lifting the movable contact member off the respective stationary contact member until the pressure spring has reached its tilting point.
Inventors
- 👤 Werner Minks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:13
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/02; H01H50/06; H01H50/54; H01H2050/028
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
230 words
In an electromagnetic relay having a principal axis and a spring resettable armature, the combination comprising: a two-legged pivotably mounted tilting mechanism, coupled by the free end of one leg thereof to the armature, and having at the free end of the other leg a pair of oppositely disposed contact members, for providing movement of said contact members between two limit positions as defined by a pair of oppositely arranged stationary contacts, the initial movement of said tilting mechanism being in response to movement of the armature; and spring element means, coupled to and acting proximate the juncture of the two legs of said tilting mechanism and arranged in the form of biased pressure spring means to have a tilting point at which the direction of bias provided by said pressure spring means changes from a first to a second predetermined direction relative to said tilting mechanism, for establishing contact pressure between either one of the contact members disposed on the one leg of said tilting mechanism and a corresponding one of said stationary contacts, and for actuating movement of the contact members to one of said limit positions by way of said tilting mechanism responsive to the armature tilting said mechanism from the other limit position to said tilting point at which the bias provided by said pressure spring means becomes directed toward the second of said predetermined directions.
Claim 2
Dependent Claim
230 words
In an electromagnetic relay having a principal axis and a spring resettable armature, the combination comprising: a two-legged pivotably mounted tilting mechanism, coupled by the free end of one leg thereof to the armature, and having at the free end of the other leg a pair of oppositely disposed contact members, for providing movement of said contact members between two limit positions as defined by a pair of oppositely arranged stationary contacts, the initial movement of said tilting mechanism being in response to movement of the armature; and spring element means, coupled to and acting proximate the juncture of the two legs of said tilting mechanism and arranged in the form of biased pressure spring means to have a tilting point at which the direction of bias provided by said pressure spring means changes from a first to a second predetermined direction relative to said tilting mechanism, for establishing contact pressure between either one of the contact members disposed on the one leg of said tilting mechanism and a corresponding one of said stationary contacts, and for actuating movement of the contact members to one of said limit positions by way of said tilting mechanism responsive to the armature tilting said mechanism from the other limit position to said tilting point at which the bias provided by said pressure spring means becomes directed toward the second of said predetermined directions.
Claim 3
Dependent Claim
56 words
The relay according to claim 1 wherein the armature is a magnet armature and has a normal and an operating position, and wherein said spring element means includes a pressure spring arranged to engage said tilting mechanism so as to exert opposite torques thereupon in both the normal and the operating position of the magnet armature.
Claim 4
Dependent Claim
49 words
The relay according to claim 2 wherein said tilting mechanism, during the movement thereof in response and corresponding to the movement from the normal and operating position of the magnet armature until reaching said tilting point of the pressure spring, is in a substantially force-locking connection with the armature.
Claim 5
Dependent Claim
111 words
The relay according to claim 2 wherein the one end of the pressure spring is coupled to and acts on the tilting mechanism and the other end is coupled to a stationary bearing, and wherein said tiltable mechanism, having the free end of one leg thereof coupled to the armature and the other free end of which has disposed oppositely thereon said contact members, is pivotable near the center of said one leg by way of a swivel bearing, said stationary bearing and said swivel bearing being arranged in a straight line extending substantially parallel in relation to the principal axis as defined by the excitation coil of the electromagnetic relay.
Claim 6
Dependent Claim
84 words
The reLay according to claim 4 wherein said tilting member is in the form of an angled pivoted lever whose said one leg extends to approximate a parallel condition in relation to the principal axis and is at its free end in about the normal and operating position of said armature in a force-locking connection therewith, and wherein said other leg extends to approximate a vertical direction in relation to the principal axis, in carrying at the free end thereof the movable contact members.
Claim 7
Dependent Claim
87 words
The relay according to claim 5 wherein the force-locking connection of said tilting member with the armature is effected by a portion of insulating material arranged on the armature which defines an aperture into which projects the free end of said one leg, said portion of insulating material being arranged to act as a coupling element for said one leg such that the latter is carried along from either of the normal or operating positions of the armature until reaching the tilting point of said pressure spring.
Claim 8
Dependent Claim
37 words
The relay according to claim 6 further including a stationary contact part coupled to said tilting member at said swivel bearing, and which, via said legs of said tilting member is electrically connected to said contact members.
Claim 9
Dependent Claim
47 words
A relay according to claim 5 further including a casing around the relay, and wherein said pressure spring is mounted with one end to a stud portion of the casing, and engages with its other end the communicating ends of said two legs of said tilting member.
Claim 10
Dependent Claim
32 words
The relay according to claim 2 wherein there is provided a plurality of juxtaposed pressure springs each actuating one pair of movably supported contact members in accordance with a separate tilting mechanism.
Claim 11
Dependent Claim
26 words
The relay according to claim 9 wherein at least one movably supported contact member pair and the one or more associated stationary contacts are power contacts.
Claim 12
Dependent Claim
38 words
The relay according to claim 9 wherein the arrangement of said movably supported contact members co-operating with said associated stationary contacts is such as to enable the establishment of a make, a break or a switch-over type contact.
Claim 13
Dependent Claim
28 words
The relay according to claim 11 wherein said stationary contacts serve to limit the operating stroke of the leg of said tilting mechanism carrying the associated contact members.
Claim 14
Dependent Claim
107 words
The relay according to claim 5 further including a magnetic core having a center limb and outer limbs, and said magnet armature also having limbs, and wherein said magnet armature is of U-shaped configuration and said magnetic core has an E-shaped configuration, with the free ends of said limbs of said armature being tiltably arranged relative to the free ends of said outer limbs of said core in such a way that the U-web of said armature extends at its free end over the center limb of said core which carries said excitation coil, and is flatly applied thereto when the relay is in its energized condition.
Claim 15
Dependent Claim
89 words
The relay according to claim 13 wherein said U-limbs of said magnet armature and the outer E-limbs of said magnetic core are in such a way bent rectangularly out of the plane of said U-web or out of the center E-limb about an axis extending parallel in relation to the limb axes, and wherein one U-limb of said armature and one outer E-limb of said core are arranged to lie opposite each other at one portion of their lengths in a parallel arrangement, and at a small mutual clearance.
Claim 16
Dependent Claim
43 words
The relay according to claim 14 wherein the outer E-limbs of said core are provided with stud-shaped upsettings, and the free ends of the U-limbs of said magnet armature are provided with correspondingly shaped recesses or cutouts for respectively forming a knife bearing.
Claim 17
Dependent Claim
92 words
The relay according to claim 13 further including a spring element serving the resetting of the magnet armature, said spring element consisting of a two-armed flat spring made from a non-magnetic material which, in its central portion is extended and enlarged, with the spring arms thereof which are angled off at thE end being applied under pretension (bias) to the U-web of said armature, with the central portion thereof, under tension, being fixed in a gap provided between said central E-limb of said core and a coil form associated with the latter.
Claim 18
Dependent Claim
55 words
The relay according to claim 16 wherein said flat spring extends with its central portion over the free end of said center E-limb in such a way with an angled-off portion that the U-web of said armature is flatly applied to the center portion of said flat spring in the energized condition of said relay.
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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |