US3886414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispatching system circuit
Assignee: ELECTROTEC Inc
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Filing: 1974-04-10
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Granted: 1975-05-27
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Expires: 1994-04-10
Abstract
Abstract Improvements in a dispatching system control circuit for use in a known dispatching system operable to efficently direct the movement of dispatched units to a plurality of serving stations, the system having actuating means at each of the serving stations for producing electrical request signals and a plurality of instructing means, preferably numerical indicating signs, each for directing movement to an associated serving station, the improvements in the circuit comprising electromechanical relays for enabling full utilization of the terminal outlets of a stepping relay for receiving request signals from the serving stations, thereby minimizing the cost of the circuit components. The circuit also preferably includes an electronic timer operable to initiate operation of the stepping relay at regular time intervals.
Inventors
- 👤 Ronald Louis Lach
- 👤 William Jean Brier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:26
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/09
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
353 words
For use in a dispatching system circuit having: a plurality of actuating means each at an associated serving station for producing electrical request signals; a plurality of latching relays each in circuit with an associated one of the actuating means for actuation in response to a request signal produced by the latter; a plurality of instructing means each associated with one of the serving stations, each of the instructing means being operated in response to actuation of an associated latching relay; control switch means for initiating operation of the instructing means; a stepping relay in a circuit for energization thereof and a three group set of stepping switches stepping in unison in response to energization of the stepping relay, each group having plural relay outlet terminals each associated with one of the latching relays; the first group being in a circuit with the stepping relay and the latching relays for controlling the positioning of the set, actuation of each latching relay serving to interrupt the stepping relay circuit for deenergization thereof at a predetermined position; the second group being in circuit with the instructing means for selective energization thereof in accordance with the positioning of the set; the third group being in circuit with the latching relays and being operable to return the latter to their un-actuated positions; the combination comprising: first relay means in a circuit with all of the latching relays to be operated in response to actuation of any of the latter, operation of said first relay means serving to complete an energizing circuit for the stepping relay to initiate stepping thereof; second relay means in parallel circuit with the stepping relay for simultaneous energization therewith, said first and second relay means cooperating to complete an energizing circuit for the control switch means in response to de-energization of the stepping relay; and third relay means in circuit with the third group for controlling the latter to de-actuate an actuated latching relay following operation of the instructing means associated with the latter; whereby electrical request signals produced by each of the serving stations control operation of the instructing means associated therewith.
Claim 2
Dependent Claim
353 words
For use in a dispatching system circuit having: a plurality of actuating means each at an associated serving station for producing electrical request signals; a plurality of latching relays each in circuit with an associated one of the actuating means for actuation in response to a request signal produced by the latter; a plurality of instructing means each associated with one of the serving stations, each of the instructing means being operated in response to actuation of an associated latching relay; control switch means for initiating operation of the instructing means; a stepping relay in a circuit for energization thereof and a three group set of stepping switches stepping in unison in response to energization of the stepping relay, each group having plural relay outlet terminals each associated with one of the latching relays; the first group being in a circuit with the stepping relay and the latching relays for controlling the positioning of the set, actuation of each latching relay serving to interrupt the stepping relay circuit for deenergization thereof at a predetermined position; the second group being in circuit with the instructing means for selective energization thereof in accordance with the positioning of the set; the third group being in circuit with the latching relays and being operable to return the latter to their un-actuated positions; the combination comprising: first relay means in a circuit with all of the latching relays to be operated in response to actuation of any of the latter, operation of said first relay means serving to complete an energizing circuit for the stepping relay to initiate stepping thereof; second relay means in parallel circuit with the stepping relay for simultaneous energization therewith, said first and second relay means cooperating to complete an energizing circuit for the control switch means in response to de-energization of the stepping relay; and third relay means in circuit with the third group for controlling the latter to de-actuate an actuated latching relay following operation of the instructing means associated with the latter; whereby electrical request signals produced by each of the serving stations control operation of the instructing means associated therewith.
Claim 3
Dependent Claim
30 words
The combination of claim 1, wherein said third relay means is operable to enable completion of the stepping relay energizing circuit after de-actuation of an actuated latching relay has occurred.
Claim 4
Dependent Claim
22 words
The combination of claim 1, including an electronic timer operable to maintain operation of each instructing means for a preselected time interval.
Claim 5
Dependent Claim
40 words
The combination of claim 3, wherein said timer is further operable, in response to simultaneous actuation of plural latching relays, to re-initiate operation of the instructing means after a predetermined time interval has elapsed following termination of each operation thereof.
References Cited (Backward Citations)
US3206722A
Cited
US3588808A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |