US3735296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sequence relay
Assignee: Guardian Electric Manufacturing Co
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Filing: 1972-08-03
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Granted: 1973-05-22
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Expires: 1992-08-03
Abstract
Abstract A sequence relay includes a coil mounted on a frame. Current through the coil will drive an armature from a first position to a second position. Attached to the frame is a biased lifter which may translate from a biased first position to a second position by operation of the armature. A pawl mounted on the frame engages the lifter in the second position to hold it in that position even though the armature is released by the coil. When the armature is subsequently operated, it engages and releases the pawl from the lifter, thereby permitting the biased lifter to assume its first position. Switching is effected by an extension of the lifter which engages contacts and moves them from a first to a second position.
Inventors
- 👤 T Obszarny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:55
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/02; H01H51/04; H01H51/06; H01H51/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
214 words
An improved sequence relay of the type having an armature on a frame, means for driving said armature in response to a signal input to said relay, contact means operated in response to movement of said armature, and improved means for operating said contact means in response to movement of said armature, said improved means comprising, in combination: lifter means mounted on said frame for driving said contact means, said lifter means translatable between a first position and a second position, drive means attached to said armature, said drive means engageable with said lifter means to translate said lifter means from said first position to said second position; means for locking said lifter means in said second position whenever said lifter means is driven by said drive means from said first position to said second position, said drive means also engageable with said means for locking whenever said lifter means is in said second position to disengage said means for locking from said lifter means; and means for translating said lifter means from said second position to said first position when said means for locking is disengaged, said drive means including means for providing a first amount of travel for said lifter means and a second amount of travel for said means for locking.
Claim 2
Dependent Claim
214 words
An improved sequence relay of the type having an armature on a frame, means for driving said armature in response to a signal input to said relay, contact means operated in response to movement of said armature, and improved means for operating said contact means in response to movement of said armature, said improved means comprising, in combination: lifter means mounted on said frame for driving said contact means, said lifter means translatable between a first position and a second position, drive means attached to said armature, said drive means engageable with said lifter means to translate said lifter means from said first position to said second position; means for locking said lifter means in said second position whenever said lifter means is driven by said drive means from said first position to said second position, said drive means also engageable with said means for locking whenever said lifter means is in said second position to disengage said means for locking from said lifter means; and means for translating said lifter means from said second position to said first position when said means for locking is disengaged, said drive means including means for providing a first amount of travel for said lifter means and a second amount of travel for said means for locking.
Claim 3
Dependent Claim
36 words
The improved relay of claim 1 wherein said drive means comprise means extending from said armature and having a first section for driving said lifter means and a second section for driving said means for locking.
Claim 4
Dependent Claim
32 words
The improved relay of claim 1 wherein said drive means comprise a first section spaced a first distance from said armature and a second section spaced a lesser distance from said armature.
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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |