US4167783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable lighting system having a foot operated dimmer
Assignee: Individual
•
Filing: 1977-08-30
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Granted: 1979-09-11
•
Expires: 1997-08-30
Abstract
Abstract A portable lighting system which includes a stand having an adjustable effective length which positions lights carried on a frame at a predetermined vertical position with respect to a supporting surface. The frame is releasably secured to the stand and can readily be set up and dismantled for transport in a compact space. Lights carried by the frame are connected to a foot operated control box which includes switches actuated to energize preselected lights or groups of lights. The energized lights or preselected energized lights can be intensity modulated with a foot operated dimmer while leaving the operator's hands free to play a musical instrument.
Inventors
- 👤 William P. Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:59
CPC Classifications
F; F21; F21V; F21V23/00; F21V21/00; F21V21/06; F21V23/04; F21W; F21W2131/00; F21W2131/40; F21W2131/406; F21Y; F21Y2113/00; F21Y2113/10
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
109 words
A portable lighting system adapted for being driven by a standard source comprising: at least one lighting tree including a collapsible stand, a frame carried by said stand and a plurality of lights mounted on said frame, control means connected to said source and each of said lights, said control means including first switch means for selectively energizing at least one preselected light, and first means for controlling the intensity of at least one of said lights, said first means including a dimmer having a foot operated rheostat the intensity of at least one of said lights can be adjusted by an operator adjusting the resistance of said rheostat.
Claim 2
Dependent Claim
109 words
A portable lighting system adapted for being driven by a standard source comprising: at least one lighting tree including a collapsible stand, a frame carried by said stand and a plurality of lights mounted on said frame, control means connected to said source and each of said lights, said control means including first switch means for selectively energizing at least one preselected light, and first means for controlling the intensity of at least one of said lights, said first means including a dimmer having a foot operated rheostat the intensity of at least one of said lights can be adjusted by an operator adjusting the resistance of said rheostat.
Claim 3
Dependent Claim
82 words
The lighting system of claim 1 wherein said stand includes a base engaging a supporting surface, a first upright member releaseably secured to said base, a second upright member carrying said frame and telescopically engaging said first member, whereby the combined effective length of said first and second member can be adjusted, means for selectively fixing said first and second members in a fixed relative position whereby said frame carrying said lights can be adjusted, vertically with respect to said supporting surface.
Claim 4
Dependent Claim
18 words
The lighting system of claim 1 including a switch for selectively supplying power to said first switch means.
Claim 5
Dependent Claim
53 words
The lighting system of claim 1 wherein said first switch means are mounted in a control box which is supported on a supporting surface, said first switch means including a plurality of switches each of said switches including a foot operable actuator for selectively opening and closing each of said plurality of switches.
Claim 6
Dependent Claim
67 words
The lighting system of claim 1 including a foot pedal means having a substantially rectangular housing, a foot pedal pivotally mounted on said housing, said rheostat being mounted within said housing, linkage means connecting said foot pedal and said dimmer pivotal movement of said foot pedal operates said dimmer and varies the resistance of said rheostat thereby varying the intensity of at least one of said lights.
Claim 7
Dependent Claim
11 words
The lighting system of claim 1 wherein said lights are multicolored.
Claim 8
Dependent Claim
30 words
The lighting system of claim 1 including bracket means rotatably mounted on said frame means, said bracket means rotatably carrying said lights the orientation of said lights can be adjusted.
Claim 9
Dependent Claim
66 words
The lighting system of claim 4 wherein said plurality of switches includes a second switch which selectively energizes at least one of said lights, and a third switch which selectively energizes at least another one of said lights, said third switch being connected to the light which it energizes through said dimmer said light controlled by said third switch can be intensity modulated by said dimmer.
Claim 10
Dependent Claim
17 words
The lighting system of claim 6 wherein said lights are arranged on said frame in multicolored groups,
Claim 11
Dependent Claim
39 words
The lighting system of claim 9 wherein said switch means includes group control switches, one of said group control switches being connected to one of said groups of multicolored lights for selectively energizing one of said groups of lights.
Claim 12
Dependent Claim
16 words
The lighting system of claim 4 including a housing carrying each of said group control switches.
Claim 13
Dependent Claim
94 words
Foot pedal means for varying the intensity of lights comprising: a housing, a foot pedal pivotally mounted on said housing, a dimmer carried by said housing and invluding a rheostat having an adjustable arm for varying the resistance of said rheostat, means for connecting said dimmer to certain of said lights, linkage means comprising an elongated arm having a first end pivotally secured to said foot pedal and a further end being pivotally secured to said rheostat arm rotation of said foot pedal adjusts said rheostat arm and varies the resistance of said rheostat.
Claim 14
Dependent Claim
94 words
Foot pedal means for varying the intensity of lights comprising: a housing, a foot pedal pivotally mounted on said housing, a dimmer carried by said housing and invluding a rheostat having an adjustable arm for varying the resistance of said rheostat, means for connecting said dimmer to certain of said lights, linkage means comprising an elongated arm having a first end pivotally secured to said foot pedal and a further end being pivotally secured to said rheostat arm rotation of said foot pedal adjusts said rheostat arm and varies the resistance of said rheostat.
Claim 15
Dependent Claim
51 words
The foot pedal means of claim 1 wherein said rheostat includes an elongated body which is secured within said housing in a substantially upright position, said arm being disposed substantially perpendicularly with respect to said rheostat body and slidably in a substantially vertical direction for varying the resistance of said rheostat.
Claim 16
Dependent Claim
29 words
The foot pedal means of claim 1 wherein said housing is substantially rectangular and defines an opening which assists in providing ventilation of said dimmer carried by said housing.
Claim 17
Dependent Claim
30 words
The foot pedal means of claim 1 wherein said dimmer includes a triac which is fired by varying the resistance of said rheostat responsive to operation of said foot pedal.
References Cited (Backward Citations)
US1941503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-09-10 | 1983-03-12 | 1983-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-10 | 1987-03-12 | 1987-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-10 | 1991-03-12 | 1991-09-11 | $7700.00 | Window Closed / Lapsed |