Patent US3711801A successfully refreshed from Google Patents.
US3711801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Miniature electromagnetic relay
Assignee: ALE International SAS
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Filing: 1971-07-20
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Granted: 1973-01-16
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Expires: 1991-07-20
Abstract
Abstract A relay having a C-shaped element surrounding a coil winding to provide a magnetic circuit. The magnetic circuit displaces a movable blade carrying an elongated contact having a free extremity disposed in position for contacting rest and working fixed contacts, the fixed contacts being disposed in a plane perpendicular to the longitudinal axis of the relay.
Inventors
- 👤 P Bloch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:09
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/14; H01H51/00; H01H51/02; H01H51/04; H01H51/06
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
244 words
A miniature electromagnetic relay comprising: a plurality of fixed rest contacts and work contacts; an elongated frame of insulating materials having a rectangular cross-section on which there is wound at least one winding; a C-shaped magnetic circuit element surrounding said winding on one side of said elongated frame and having a gap disposed inside said frame; at least one common wire contact having an elongated shape and substantially constant cross-section; means for supporting one end of said common wire contact in cantelever fashion inside said frame adjacent one end of said frame with said one end of said common contact extending out of said frame as a connection portion; a magnetic armature insulatingly secured solely to said common wire contact at a point between said support means and the other free end of said common wire contact inside said frame, said magnetic armature being disposed adjacent the gap in said magnetic circuit element and the other free end of said common contact being disposed between at least one rest contact and one work contact, and wherein each of said work contacts comprises an assymmetrical U-shaped portion having a short arm, a transverse arm substantially perpendicular to the short arm and a third arm parallel to and longer than the short arm, and wherein each rest contact is parallel to the longer third arm of the first contact and has one end thereof opposite an end of the short arm of the first U-shaped contact.
Claim 2
Dependent Claim
244 words
A miniature electromagnetic relay comprising: a plurality of fixed rest contacts and work contacts; an elongated frame of insulating materials having a rectangular cross-section on which there is wound at least one winding; a C-shaped magnetic circuit element surrounding said winding on one side of said elongated frame and having a gap disposed inside said frame; at least one common wire contact having an elongated shape and substantially constant cross-section; means for supporting one end of said common wire contact in cantelever fashion inside said frame adjacent one end of said frame with said one end of said common contact extending out of said frame as a connection portion; a magnetic armature insulatingly secured solely to said common wire contact at a point between said support means and the other free end of said common wire contact inside said frame, said magnetic armature being disposed adjacent the gap in said magnetic circuit element and the other free end of said common contact being disposed between at least one rest contact and one work contact, and wherein each of said work contacts comprises an assymmetrical U-shaped portion having a short arm, a transverse arm substantially perpendicular to the short arm and a third arm parallel to and longer than the short arm, and wherein each rest contact is parallel to the longer third arm of the first contact and has one end thereof opposite an end of the short arm of the first U-shaped contact.
Claim 3
Dependent Claim
45 words
A miniature electromagnetic relay as defined in claim 1, wherein the end of said common wire contact extending out of said frame is bent at right angles in parallel with said fixed contacts so as to permit connection of the relay in a prone position.
Claim 4
Dependent Claim
40 words
A miniature electromagnetic relay as defined in claim 2, wherein said fixed contacts are cut out of a metal composite copper-silver-copper strip, the copper portion providing output leads and the silver portion providing fixed contact parts for said wire contact.
Claim 5
Dependent Claim
53 words
A miniature electromagnetic relay as defined in claim 3, wherein said fixed contacts are mounted in said support means made of a block of insulating material having a central opening into which said contacts extend from opposite sides, the other end of said wire contact extending into said opening between said fixed contacts.
Claim 6
Dependent Claim
55 words
A miniatuRe electromagnetic relay as defined in claim 4, wherein said magnetic armature is disposed on an insulating movable blade supporting a plurality of wire contacts having free extremities which extend into said opening in said insulating block and said insulating block supports a plurality of pairs of fixed contacts associated with respective wire contacts.
Claim 7
Dependent Claim
29 words
A miniature electromagnetic relay as defined in claim 1, wherein said C-shaped magnetic circuit element is formed of two pieces made of magnetic material and secured together by glue.
Claim 8
Dependent Claim
33 words
A miniature electromagnetic relay as defined in claim 1, wherein said winding also includes a coil form upon which said coil is wound, said insulating block being formed integral with said coil form.
Claim 9
Dependent Claim
40 words
a miniature electromagnetic relay as defined in claim 1, wherein said fixed contacts are cut out of a metal composite copper-silver-copper strip, the copper portion providing output leads and the silver portion providing fixed contact parts for said wire contact.
Claim 10
Dependent Claim
49 words
A miniature electromagnetic relay, according to claim 1, wherein each rest and working contact is a substantially rectilinear tab made of copper and each adjacent end of the rest and working contacts with which said common wire contact comes in contact has a tip portion made of silver alloy.
Claim 11
Dependent Claim
27 words
A miniature electromagnetic relay according to claim 1, wherein at least a pair of said U-shaped work contacts has one of the work contacts surrounding the other.
Claim 12
Dependent Claim
24 words
A miniature electromagnetic relay according to claim 10, wherein the rest contacts associated with said pair of U-shaped contacts are disposed adjacent each other.
Claim 13
Dependent Claim
54 words
A miniature electromagnetic relay according to claim 11, wherein each of two pairs of said U-shaped work contacts has one of the work contacts surrounded by the other and wherein each of the rest contacts associated with each of the work contacts of said pairs are disposed next to each other in a row.
Claim 14
Dependent Claim
49 words
A miniature electromagnetic relay according to claim 12, wherein each rest and working contact is a substantially rectilinear tab made of copper and each adjacent end of the rest and working contacts with which said common wire contact comes in contact has a tip portion made of silver alloy.
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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |