Patent US4736115A successfully refreshed from Google Patents.
US4736115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control circuit with plural individual selectable controls
Assignee: Greater Union Theatre Supplies Pty Ltd
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Filing: 1985-02-11
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Granted: 1988-04-05
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Expires: 2005-02-11
Abstract
Abstract An electrical circuit for the control of a parameter of sound, lighting, etc. within an auditorium by a selected one of a plurality of interconnected controlling devices, wherein each of the devices comprises a manual control (R4) for said parameter which is effective upon operation of a latched trigger (G3, G4), the trigger being activated whenever a signal is received from a selection circuit (STROBE) common to all of the devices while a manual switch (SW1) at a selected device is operated, and the trigger becoming unlatched when a subsequent signal is received and the manual switch is not operated.
Inventors
- 👤 Phillip J. Storey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:08
CPC Classifications
H; H04; H04R; H04R27/00; H04Q; H04Q9/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
152 words
A system for electrical control of a function within a defined area, comprising: an electrical bus traversing at least part of said area; a control circuit connected with said electrical bus and operable to provide electrical control of said function; a plurality of controlling devices connectable to said electrical bus for individual operation of said control circuit; each one of said controlling devices having a semi-conductor device, a manual control means for deriving a voltage to operate said control circuit and being connectable to said control bus with activation of said semi-conductor device, an electronic latch, a switch manually operable for effecting, by means of a first signal provided from said control circuit, closure of said latch for activation of said semi-conductor device; and means for opening of said latch upon receipt of a second signal provided from said control circuit at the time when said manually operable switch is not operated.
Claim 2
Independent Claim
152 words
A system for electrical control of a function within a defined area, comprising: an electrical bus traversing at least part of said area; a control circuit connected with said electrical bus and operable to provide electrical control of said function; a plurality of controlling devices connectable to said electrical bus for individual operation of said control circuit; each one of said controlling devices having a semi-conductor device, a manual control means for deriving a voltage to operate said control circuit and being connectable to said control bus with activation of said semi-conductor device, an electronic latch, a switch manually operable for effecting, by means of a first signal provided from said control circuit, closure of said latch for activation of said semi-conductor device; and means for opening of said latch upon receipt of a second signal provided from said control circuit at the time when said manually operable switch is not operated.
Claim 3
Dependent Claim
42 words
A control system as claimed in claim 1, with said electronic latch being a flip-flop, and said opening means for said latch being a reset circuit for said flip-flop including a normally closed switch opening with operation of said manually operable switch.
Claim 4
Dependent Claim
30 words
A control system as claimed in claim 2, with said reset circuit being one element of a single quad analog gate IC and another element thereof comprising said semi-conductor device.
Claim 5
Dependent Claim
20 words
A control system as claimed in claim 3, with said electrical bus including a ribbon cable provided with five conductors.
Claim 6
Dependent Claim
20 words
A control system as claimed in claim 1, with said electrical bus including a ribbon cable provided with five conductors.
Claim 7
Dependent Claim
20 words
A control system as claimed in claim 2, with said electrical bus including a ribbon cable provided with five conductors.
Claim 8
Dependent Claim
39 words
A control system as claimed in claim 2, with all of the active electronic components of each of said controlling devices being provided by a single quad analog gate IC and a single dual input quad NAND gate IC.
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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) | 1991-04-05 | 1991-10-05 | 1992-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-05 | 1995-10-05 | 1996-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-05 | 1999-10-05 | 2000-04-05 | $7700.00 | Window Closed / Lapsed |