US3750060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic relay
Assignee: Bach and Co GmbH
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Filing: 1972-04-20
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Granted: 1973-07-31
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Expires: 1992-04-20
Abstract
Abstract An electromagnetic relay in which center contact spring means normally engages outer contact spring means on one side and is moveable into engagement with contact spring means on the other side upon energization of an electromagnetic actuator forming a part of the relay. The contact spring means are in the form of leaf springs having contact elements at one end and being supported near the other end by a block of electrical insulating material having lateral slits into which the spring means are inserted. The slits are inclined relative to each other and thereby predetermine the preload on the individual spring means. The block has at least one wall portion projecting therefrom which has abutment elements interposed between the center spring means and the outer spring means to limit the movement of the latter toward the former. Advantageously, each contact spring means is in the form of a pair of laterally spaced springs between which the aforementioned wall is disposed.
Inventors
- 👤 H Pfenning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:21
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/54; H01H50/56; H01H51/00; H01H51/02; H01H51/04; H01H51/06; H01H1/00; H01H1/12; H01H1/14; H01H1/24; H01H1/26; H01H2001/265
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
248 words
In an electromagnetic relay, a contact spring assembly comprising: ribbon-like center contact spring means and outer contact spring means arranged in generally parallel superposed spaced relation, holding and insulating means supportingly engaging said spring means in a region near one end and interengageable contact element means on said spring means near the other end, an electromagnetic actuator having a frame connected to said holding and insulating means adjacent one of said outer contact spring means, said center contact spring means normally holding the contact element means thereon in engagement with the contact element means on said one outer contact spring means, said electromagnetic actuator having an armature operatively connected to said center contact spring means and operable when energized to move said center contact spring means to cause the contact element thereon to separate from the contact means on said one outer spring means and to engage the said contact means on the other outer spring means, said holding and insulating means having separate slits receiving said regions of said contact spring means, said slits being inclined to each other to predetermine the elastic preload on said contact spring means, and abutment elements engageable with said outer contact spring means to limit the movement of said outer contact spring means toward said center spring means, said abutment elements protruding into the space between said center contact spring means and respective ones of said outer contact means, and being formed in one piece with said holding and insulating means.
Claim 2
Dependent Claim
248 words
In an electromagnetic relay, a contact spring assembly comprising: ribbon-like center contact spring means and outer contact spring means arranged in generally parallel superposed spaced relation, holding and insulating means supportingly engaging said spring means in a region near one end and interengageable contact element means on said spring means near the other end, an electromagnetic actuator having a frame connected to said holding and insulating means adjacent one of said outer contact spring means, said center contact spring means normally holding the contact element means thereon in engagement with the contact element means on said one outer contact spring means, said electromagnetic actuator having an armature operatively connected to said center contact spring means and operable when energized to move said center contact spring means to cause the contact element thereon to separate from the contact means on said one outer spring means and to engage the said contact means on the other outer spring means, said holding and insulating means having separate slits receiving said regions of said contact spring means, said slits being inclined to each other to predetermine the elastic preload on said contact spring means, and abutment elements engageable with said outer contact spring means to limit the movement of said outer contact spring means toward said center spring means, said abutment elements protruding into the space between said center contact spring means and respective ones of said outer contact means, and being formed in one piece with said holding and insulating means.
Claim 3
Dependent Claim
57 words
An electromagnetic relay according to claim 1 in which said holding and insulating means comprises at least one wall portion substantially parallel to said contact spring means, said abutment elements being integral with said wall portion and protruding therefrom into the space between said center contact spring means and respective ones of said outer contact spring means.
Claim 4
Dependent Claim
70 words
An electromagnetic relay according to claim 1 in which each of said center and outer spring means comprise a pair of springs in laterally spaced relation, said holding and insulating means having a said slit for each spring extending inwardly from the respective side of said holding and insulating means, the central portion of said holding and insulating means between the respective slits for each pair of springs being uninterrupted.
Claim 5
Dependent Claim
145 words
An electromagnetic relay according to claim 1 in which each of said center and outer spring means comprise a pair of springs in laterally spaced relation, said holding and insulating means having a said slit for each spring extending inwardly from the respective side of said holding and insulating means, the central portion of said holding and insulating means between the respective slits for each pair of springs being uninterrupted, a wall portion integral with said central portion of said holding and insulating means and extending outwardly therefrom in the space between the respective springs of each pair of contact spring means, said abutment elements being integral with said wall portion aNd protruding in the lateral direction therefrom into the spaces between the respective springs of said pair of center contact spring means and the respective springs of said pairs of outer contact spring means.
Claim 6
Dependent Claim
191 words
An electromagnetic relay according to claim 1 in which each of said center and outer spring means comprise a pair of springs in laterally spaced relation, said holding and insulating means having a said slit for each spring extending inwardly from the respective side of said holding and insulating means, the central portion of said holding and insulating means between the respective slits for each pair of springs being uninterrupted, a wall portion integral with said central portion of said holding and insulating means and extending outwardly therefrom in the space between the respective springs of each pair of contact spring means, said abutment elements being integral with said wall portion and protruding in the lateral direction therefrom into the spaces between the respective springs of said pair of center contact spring means and the respective springs of said pairs of outer contact spring means, said wall portion comprising a cutout facing said electromagnetic actuator, and plunger means reciprocably guided in said cutout and disposed between said center contact spring means and the armature of said electromagnetic actuator and forming the operative connection of said armature to said center contact springs.
References Cited (Backward Citations)
AT224708B
Cited
US3256401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |