Patent US3835352A successfully refreshed from Google Patents.
US3835352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timing attachment for a relay
Assignee: Schneider Electric USA Inc
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Filing: 1973-03-16
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Granted: 1974-09-10
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Expires: 1993-03-16
Abstract
Abstract A timing attachment for a relay including a light source and detector and an apertured control member movable between the light source and detector to influence transmission of light therebetween, the movement of the control member being controlled by the relay, and the light source and detector providing initiation of the timing. Reversal of the timing attachment on the relay changes the position of the attachment relative to the control member to enable change from time delay after energization of the relay to time delay after de-energization or vice versa.
Inventors
- 👤 G Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:27
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/94; H03K17/965; H03K17/968; H03K17/28; H03K17/292
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
288 words
A timing attachment for an electromagnetic relay having a movable contact carrier, said timing attachment comprising a housing a source of radiation and a radiation detector mounted in spaced apart relationship in the housing so that the detector can detent radiation transmitted from the source to the detector along a path, means for mounting the housing on the relay, a control member having a pair of apertures and movable in the housing in intersecting relation with the path when the housing is mounted on the relay thereby to influence the radiation transmitted from the source to the detector, means for mounting the control member on the contact carrier for movement thereby, a control cicuit in the housing, a contact interposed in the control circuit, means causing operation of the contact in response to the amount of radiation received by the detector along the path, means for reversing the relative position of the control member with respect to the path so that in one position a first portion of the control member is in the path and in the other position a second portion of the control member is in the path, said apertures being in said portions, respectively, and positioned so that in one position of the member with respect to the path, a first one of the pair of apertures is in the path when the relay is deenergized and the path is blocked by the control member when the relay is energized and, in the other position of the member with respect to the path, a second one of the pair of apertures is in the path when the relay is energized and the path is blocked by the control member when the relay is deenergized.
Claim 2
Dependent Claim
288 words
A timing attachment for an electromagnetic relay having a movable contact carrier, said timing attachment comprising a housing a source of radiation and a radiation detector mounted in spaced apart relationship in the housing so that the detector can detent radiation transmitted from the source to the detector along a path, means for mounting the housing on the relay, a control member having a pair of apertures and movable in the housing in intersecting relation with the path when the housing is mounted on the relay thereby to influence the radiation transmitted from the source to the detector, means for mounting the control member on the contact carrier for movement thereby, a control cicuit in the housing, a contact interposed in the control circuit, means causing operation of the contact in response to the amount of radiation received by the detector along the path, means for reversing the relative position of the control member with respect to the path so that in one position a first portion of the control member is in the path and in the other position a second portion of the control member is in the path, said apertures being in said portions, respectively, and positioned so that in one position of the member with respect to the path, a first one of the pair of apertures is in the path when the relay is deenergized and the path is blocked by the control member when the relay is energized and, in the other position of the member with respect to the path, a second one of the pair of apertures is in the path when the relay is energized and the path is blocked by the control member when the relay is deenergized.
Claim 3
Dependent Claim
62 words
A timing attachment as in claim 1 wherein the means for mounting the housing on the relay permits the housing to be mounted on the relay selectively in two positions in one of which the member is in one of its two positions with respect to the path and in the other the member is in the other of its two positions.
Claim 4
Dependent Claim
30 words
A timing attachment as claimed in claim 1, wherein the apertured control member comprises a generally rectangular vane and the apertures are spaced generally along a diagonal of the vane.
Claim 5
Dependent Claim
17 words
A timing attachment as in claim 1, wherein the source of radiation is a light emitting diode.
Claim 6
Dependent Claim
14 words
A timing attachment as in claim 1, wherein the detector is a photo transistor.
Claim 7
Dependent Claim
41 words
A timing attachment as in claim 5, wherein the output contact comprises a triac, and means are provided for removably mounting the output contact on the housing, the mounting means forming an electrical connection between the triac and the control circuit.
Claim 8
Dependent Claim
41 words
A timing attachment as in claim 5, wherein the output contact comprises a transistor, and means are provided for removably mounting the output contact on the housing, the mounting means forming an electrical contact between the transistor and the control circuit.
Claim 9
Dependent Claim
94 words
A timing attachment as in claim 1 wherein the control circuit incorporates a transistor, the conduction or non-conduction of which controls the operation of the output contact, and wherein there is provided a plug member which is arranged to be mounted in the housing in either of two locations to provide different ways of connecting the transistor in the control circuit and accordingly provide selected modes of output contact operation, and a legend plate having notations at various locations, to indicate, by the notations adjacent to the plug member, the selected mode of operation.
References Cited (Backward Citations)
US3683301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |