US3748607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flat type balanced armature relay
Assignee: Panasonic Electric Works Co Ltd
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Filing: 1972-08-25
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Granted: 1973-07-24
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Expires: 1992-08-25
Abstract
Abstract A flat type balanced armature relay of a reduced height. Coil bobbin with exciting coil and yoke are placed in a pile on header plate of magnetic material and the yoke and header are coupled by a permanent magnet disposed at a side of the bobbin. Rockable armature having at both ends contact spring driving pins is contained axially in the bobbin. A frame member for fixing the pile and magnet to the header has an adjusting spring means for urging the driving pins to render the switching operation stable and disposed in a manner readily accessible from sideward for adjusting the urging pressure. By varying the pressure properly, the relay may be adapted to be of one-stable, two-stable or center-stable type.
Inventors
- 👤 T Mori
- 👤 M Morimoto
- 👤 H Nishimura
- 👤 H Yoshino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:29
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/22; H01H51/2272; H01H50/00; H01H50/02; H01H50/04; H01H50/041; H01H50/043; H01H2050/044
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
182 words
An electromagnetic relay comprising a header formed of a magnetic material and having magnetic pole pieces projecting with a spacing between them substantially in the middle part, a coil bobbin arranged on the above mentioned header and bearing an armature rotatably in a space within it, an exciting coil wound on the above mentioned coil bobbin, a yoke arranged around the upper part of the above mentioned coil bobbin, made of a magnetic material and opposed to the magnetic pole pieces projecting from the above mentioned header, a permanent magnet arranged between the above mentioned yoke and header, an operating spring interposed between the branched free ends of a driving piece fixed to each end of the above mentioned armature and operated by the driving piece to be opened and closed with a fixed contact, a fixing frame fixed in the bottom part of the above mentioned header and fixing the yoke, coil bobbin and permanent magnet and an adjusting spring extended from each side of the above mentioned fixing frame and having the free end arranged to press each driving piece.
Claim 2
Dependent Claim
182 words
An electromagnetic relay comprising a header formed of a magnetic material and having magnetic pole pieces projecting with a spacing between them substantially in the middle part, a coil bobbin arranged on the above mentioned header and bearing an armature rotatably in a space within it, an exciting coil wound on the above mentioned coil bobbin, a yoke arranged around the upper part of the above mentioned coil bobbin, made of a magnetic material and opposed to the magnetic pole pieces projecting from the above mentioned header, a permanent magnet arranged between the above mentioned yoke and header, an operating spring interposed between the branched free ends of a driving piece fixed to each end of the above mentioned armature and operated by the driving piece to be opened and closed with a fixed contact, a fixing frame fixed in the bottom part of the above mentioned header and fixing the yoke, coil bobbin and permanent magnet and an adjusting spring extended from each side of the above mentioned fixing frame and having the free end arranged to press each driving piece.
Claim 3
Dependent Claim
115 words
An electromagnetic relay according to claim 1 wherein the distance for which one of the above mentioned adjusting springs moves while in contact with one driving piece and the distance for which the other adjusting spring moves while in contact with the other driving piece are made different from each other, the position in which the combined spring force by the spring force of the above mentioned operating spring and the spring force of the above mentioned adjusting spring becomes zero is displaced from the center of the travel of the above mentioned driving piece and the above mentioned combined spring force is so made as to be between the energizing attraction and opening attraction.
Claim 4
Dependent Claim
52 words
An electromagnetic relay according to claim 1 wherein the height of the permanent magnet arranged on the side of the coil bobbin and the height of the side of the coil bobbin are equal to each other and the side of the yoke is arranged on the side of the fixing frame.
Claim 5
Dependent Claim
35 words
An electromagnetic relay according to claim 1 wherein the operating spring is interposed between the two vertically branched tips of the driving piece fixed to each end of the armature rotating vertically to the header.
Claim 6
Dependent Claim
21 words
An electromagnetic relay according to claim 4 wherein a glass ball is fixed to each branched tip of the driving piece.
Claim 7
Dependent Claim
33 words
An electromagnetic relay according to claim 4 wherein a plurality of glass balls are fixed to the two branched tips of the driving piece so as to operate a plurality of operating springs.
Claim 8
Dependent Claim
29 words
An electromagnetic relay according to claim 1 wherein a permanent magnet holding part is formed near the branching point of the adjusting spring of the above mentioned fixing frame.
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |