US4833565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic contactor with algorithm controlled closing system
Assignee: Westinghouse Electric Corp
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Filing: 1987-02-19
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Granted: 1989-05-23
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Expires: 2007-02-19
Abstract
Abstract An electromagnetic contactor or controller is taught in which the voltage which is impressed across the electromagnetic armature winding is controlled with an algorithm to enhance the closing operation. A microprocessor is utilized to implement the algorithm.
Inventors
- 👤 James A. Bauer
- 👤 Denis A. Mueller
- 👤 Robert T. Basnett
- 👤 Joseph C. Engel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:45
CPC Classifications
H; H01; H01H; H01H47/00; H01H47/22
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
124 words
An electrical contactor, comprising: first contact means; second contact means for being moved into a disposition of electrical continuity with said first contact means; electromagnet means with winding means and movable armature means which is mechanically interconnected with said second contact means for causing a contact closing stroke which moves said second contact means into said disposition of electrical continuity with said first contact means; and armature motion control means for changing the motion of said armature after it has begun moving through said closing stroke from one set of motion characteristics to another set of motion characteristics by controlling the flow of electrical current through said winding means as a function of a motion control algorithm which resides in said armature control means.
Claim 2
Dependent Claim
124 words
An electrical contactor, comprising: first contact means; second contact means for being moved into a disposition of electrical continuity with said first contact means; electromagnet means with winding means and movable armature means which is mechanically interconnected with said second contact means for causing a contact closing stroke which moves said second contact means into said disposition of electrical continuity with said first contact means; and armature motion control means for changing the motion of said armature after it has begun moving through said closing stroke from one set of motion characteristics to another set of motion characteristics by controlling the flow of electrical current through said winding means as a function of a motion control algorithm which resides in said armature control means.
Claim 3
Dependent Claim
27 words
The combination as claimed in claim 1 wherein said armature motion control means comprises a microcomputer with memory means wherein said algorithm resides in said memory means.
Claim 4
Dependent Claim
26 words
The combination as claimed in claim 1 comprising a spring means, wherein said spring means is compressed as it resists the movement of said armature means.
Claim 5
Dependent Claim
36 words
The combination as claimed in claim 3 wherein said spring means comprises a kickout spring which causes said second contact means to move away from said first contact means upon command to open said electrical circuit.
Claim 6
Dependent Claim
35 words
The combination as claimed in claim 3 wherein said spring means comprises a contact spring which operates to apply pressure to first and second contact means when they are in said disposition of electrical continuity.
Claim 7
Dependent Claim
31 words
The combination as claimed in claim 5 wherein said spring means comprises a kickout spring which causes said second contact means to move away from said first contact means upon command.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |