US3899713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Touch lamp, latching AC solid state touch switch usable with such lamp, and circuits for the same
Assignee: HALL BARKAN INSTR Inc
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Filing: 1974-06-20
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Granted: 1975-08-12
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Expires: 1994-06-20
Abstract
Abstract A lamp having at least two areas such that when one is touched a solid state latching AC powered switch turns the lamp on and when another is touched the latching action is disabled to turn the lamp off. Circuits are disclosed utilizing solid state avalanchetype devices which have a simple arrangement for maintaining the devices latched in conducting mode during commutating periods. The switches and circuits may be of the two- or three-wire type and have general utility as well as specialized utility for touch lamps. A single area can be employed to control a solid state latching AC powered switch to successively turn a lamp on and off upon sequential touching thereof.
Inventors
- 👤 Harold Barkan
- 👤 George E Brayman
- 👤 Jerome Swartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:10
CPC Classifications
F; F21; F21V; F21V23/00; F21V23/04; F21V23/0442; H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/72; H03K17/725; H03K17/94; H03K17/96; H03K17/962; H05; H05B; H05B41/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
316 words
In combination, A. an electrically actuatable load, B. an on touch element having no parts which are movable as a requisite to the actuation of the load, C. an off touch element having no parts which are movable as a requisite to the deactuation of the load, and D. totally solid state circuitry means to energize said load upon touching said on touch element and to de-energize said load upon touching said off touch element, E. said solid state circuitry means being engageable with so as to be energizeable by an AC source of power, said solid state circuitry means including i. input terminals connectable to said AC source of power, ii. a power handling solid state switch having a. a cathode terminal, b. an anode terminal and c. a control terminal, iii. means connecting said cathode and anode terminals through the load to said input terminals, iv. a solid state amplifier means having a. input means and b. output means, v. means connecting the amplifier input means to the touch elements, vi. means connecting the amplifier output means to the control terminal of a solid state switch whereby when said on touch element is touched the solid state switch is placed in a conductive mode and the load thereby is energized, vii. capacitor means between the cathode and control terminals, a. said capacitor means being of such value that upon energization of the solid state switch it will be charged sufficiently to latch the solid state switch in conductive mode after the same is placed in such mode, and viii. circuit means connected to the output means of the solid state amplifier means and activated by contacting the off touch element after the load is energized for discharging the capacitor means so as to disable the latching means and thereby return the solid state switch to a non-conductive mode so as to de-energize the load.
Claim 2
Dependent Claim
316 words
In combination, A. an electrically actuatable load, B. an on touch element having no parts which are movable as a requisite to the actuation of the load, C. an off touch element having no parts which are movable as a requisite to the deactuation of the load, and D. totally solid state circuitry means to energize said load upon touching said on touch element and to de-energize said load upon touching said off touch element, E. said solid state circuitry means being engageable with so as to be energizeable by an AC source of power, said solid state circuitry means including i. input terminals connectable to said AC source of power, ii. a power handling solid state switch having a. a cathode terminal, b. an anode terminal and c. a control terminal, iii. means connecting said cathode and anode terminals through the load to said input terminals, iv. a solid state amplifier means having a. input means and b. output means, v. means connecting the amplifier input means to the touch elements, vi. means connecting the amplifier output means to the control terminal of a solid state switch whereby when said on touch element is touched the solid state switch is placed in a conductive mode and the load thereby is energized, vii. capacitor means between the cathode and control terminals, a. said capacitor means being of such value that upon energization of the solid state switch it will be charged sufficiently to latch the solid state switch in conductive mode after the same is placed in such mode, and viii. circuit means connected to the output means of the solid state amplifier means and activated by contacting the off touch element after the load is energized for discharging the capacitor means so as to disable the latching means and thereby return the solid state switch to a non-conductive mode so as to de-energize the load.
Claim 3
Dependent Claim
14 words
A combination as set forth in claim 1 wherein the load is a lamp.
Claim 4
Dependent Claim
27 words
A combination as set forth in claim 2 wherein the touch elements are rings carried by the support, electrically insulated from each other and spaced apart verticaLly.
Claim 5
Dependent Claim
18 words
A combination as set forth in claim 1 wherein the solid state switch is a silicon controlled rectifier.
Claim 6
Dependent Claim
38 words
A combination as set forth in claim 1 wherein the solid state amplifier means includes a pair of transistors, one associated with the on touch element and the control terminal and the other associated with the capacitor means.
Claim 7
Dependent Claim
291 words
In combination, A. an electrically actuatable load, B. an off/on touch means having no parts which are movable as a requisite to actuation or deactuation of the load, and C. totally solid state circuitry means to turn said load off or on upon touching said touch means, D. said solid state circuitry means being engageable with so as to be energizeable by an AC source of power, said solid state circuitry means including i. input terminals connectable to said AC source of power, ii. a power handling solid state switch having a. a cathode terminal, b. an anode terminal and c. a control terminal, iii. means connecting said cathode and anode terminals through the load to said input terminals, iv. a solid state amplifier means having a. an input and b. an output, v. means connecting the input of the amplifier means to the touch means, vi. means connecting the output of the amplifier means to the control terminal of a solid state switch whereby when said touch means initially is touched the solid state switch is placed in a conductive mode and the load thereby is energized, vii. capacitor means between the cathode and control terminals, a. said capacitor means being of such value that upon energization of the solid state switch it will be charged sufficiently to latch the solid state switch in conductive mode after the same is placed in such mode, and viii. circuit means connected to the output of the solid state amplifier means and activated by subsequently contacting the touch means after the load is energized for discharging the capacitor means so as to disable the latching means and thereby return the solid state switch to a non-conductive mode so as to deenergize the load.
Claim 8
Dependent Claim
291 words
In combination, A. an electrically actuatable load, B. an off/on touch means having no parts which are movable as a requisite to actuation or deactuation of the load, and C. totally solid state circuitry means to turn said load off or on upon touching said touch means, D. said solid state circuitry means being engageable with so as to be energizeable by an AC source of power, said solid state circuitry means including i. input terminals connectable to said AC source of power, ii. a power handling solid state switch having a. a cathode terminal, b. an anode terminal and c. a control terminal, iii. means connecting said cathode and anode terminals through the load to said input terminals, iv. a solid state amplifier means having a. an input and b. an output, v. means connecting the input of the amplifier means to the touch means, vi. means connecting the output of the amplifier means to the control terminal of a solid state switch whereby when said touch means initially is touched the solid state switch is placed in a conductive mode and the load thereby is energized, vii. capacitor means between the cathode and control terminals, a. said capacitor means being of such value that upon energization of the solid state switch it will be charged sufficiently to latch the solid state switch in conductive mode after the same is placed in such mode, and viii. circuit means connected to the output of the solid state amplifier means and activated by subsequently contacting the touch means after the load is energized for discharging the capacitor means so as to disable the latching means and thereby return the solid state switch to a non-conductive mode so as to deenergize the load.
Claim 9
Dependent Claim
14 words
A combination as set forth in claim 6 wherein the load is a lamp.
Claim 10
Dependent Claim
18 words
A combination as set forth in claim 6 wherein the solid state switch is a silicon controlled rectifier.
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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) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |