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US3694647A Expired / Lapsed US ⏱️ 0.0 years remaining

Multiple position, variable intensity lamp

Assignee: Chapman Manufacturing Co Inc
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Filing: 1971-01-25
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Granted: 1972-09-26
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Expires: 1991-01-25
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Abstract

Abstract In a floor lamp, a lamp receptacle which is universally pivoted to one end of a shaft is provided with a variable impedance circuit for controlling the intensity of luminance emitted by the lamp. The other end of the shaft is bifurcated and defines a pair of substantially equal and outwardly diverging legs which operate to engage the interior wall of a sleeve mounted to a base member. The engagement of the legs and interior wall of the sleeve defines a frictional lock which allows slidable and rotational movement of the shaft within the sleeve.

Inventors

  • 👤 Earle F Chapman Jr
  • 👤 Bernard J Ruskin

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 22:12
CPC Classifications
F; F21; F21S; F21S6/00; F21S6/002; F21S6/003; F21V; F21V21/00; F21V21/14; F21V23/00

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 204 words
A multiple position, variable intensity lamp comprising: a. a base; b. support means having first and second ends, said second end operatively connected to said support means, said first end operatively connected to said base; c. receptacle means universally pivoted to said support means second end; d. socket means having at least first and second terminals mounted within said receptacle means, said socket means adapted receive at least one incandescent lamp; e. variable intensity means operatively mounted within said receptacle means and electrically connected to said socket means, said variable intensity means operating to control the intensity of luminance emitted by said incandescent lamp; f. cord means having at least first and second leads electrically connected to said variable intensity means for applying electrical power to said variable intensity means; and g. a swivel fixture, said swivel fixture having an offset arm and a substantially straight arm, one end of said offset arm connected to end of said support means second end, one end of said straight arm operatively connected to said receptacle means, the other ends of each said arm connected together by means of a limited swivel joint fitting, said arms being constrained for limited swiveling movement with respect to each other
Claim 2
Dependent Claim 204 words
A multiple position, variable intensity lamp comprising: a. a base; b. support means having first and second ends, said second end operatively connected to said support means, said first end operatively connected to said base; c. receptacle means universally pivoted to said support means second end; d. socket means having at least first and second terminals mounted within said receptacle means, said socket means adapted receive at least one incandescent lamp; e. variable intensity means operatively mounted within said receptacle means and electrically connected to said socket means, said variable intensity means operating to control the intensity of luminance emitted by said incandescent lamp; f. cord means having at least first and second leads electrically connected to said variable intensity means for applying electrical power to said variable intensity means; and g. a swivel fixture, said swivel fixture having an offset arm and a substantially straight arm, one end of said offset arm connected to end of said support means second end, one end of said straight arm operatively connected to said receptacle means, the other ends of each said arm connected together by means of a limited swivel joint fitting, said arms being constrained for limited swiveling movement with respect to each other
Claim 3
Dependent Claim 186 words
A multiple position, variable intensity lamp comprising: a. a base; b. support means having first and second ends, said second end operatively connected to said support means and said first end operatively connected to said base; c. receptacle means universally pivoted to said support means second end; d. socket means having at least first and second terminals mounted within said receptacle means, said socket means adapted to receive at least one incandescent lamp; e. variable intensity means operatively mounted within said receptacle means and electrically connEcted to said socket means, said variable intensity means operating to control the intensity of luminance emitted by said incandescent lamp; f. cord means having at least first and second leads electrically connected to said variable intensity means for applying electrical power to said variable intensity means; and g. a flexible jointed arm interposed between said support means and receptacle means, said flexible jointed arm having a plurality of sections defining a convoluted spiral configuration, adjacent sections slidably interconnected by means of flanges operating to permit bending of said flexible jointed arm into selected shapes and retention of the selected shape.
Claim 4
Dependent Claim 186 words
A multiple position, variable intensity lamp comprising: a. a base; b. support means having first and second ends, said second end operatively connected to said support means and said first end operatively connected to said base; c. receptacle means universally pivoted to said support means second end; d. socket means having at least first and second terminals mounted within said receptacle means, said socket means adapted to receive at least one incandescent lamp; e. variable intensity means operatively mounted within said receptacle means and electrically connEcted to said socket means, said variable intensity means operating to control the intensity of luminance emitted by said incandescent lamp; f. cord means having at least first and second leads electrically connected to said variable intensity means for applying electrical power to said variable intensity means; and g. a flexible jointed arm interposed between said support means and receptacle means, said flexible jointed arm having a plurality of sections defining a convoluted spiral configuration, adjacent sections slidably interconnected by means of flanges operating to permit bending of said flexible jointed arm into selected shapes and retention of the selected shape.
Claim 5
Dependent Claim 314 words
A multiple position, variable intensity lamp comprising: a. a base; b. support means having first and second ends, said second end operatively connected to said support means and said first end operatively connected to said base; c. receptacle means universally pivoted to said support means second end; d. socket means having at least first and second terminals mounted within said receptacle means, said socket means adapted receive at least one incandescent lamp; e. variable intensity means operatively mounted within said receptacle means and electrically connected to said socket means, said variable intensity means operating to control the intensity of luminance emitted by said incandescent lamp; and f. cord means having at least first and second leads electrically connected to said variable intensity means for applying electrical power to said variable intensity means; g. said variable intensity means including variable impedance means and switch means, said variable impedance means including a potentiometer having a wiper arm, said switch means having at least first and second terminal means, one side of said potentiometer connected to said first lead, the other side of said potentiometer connected said first terminal means of said switch means, said second terminal means of said switch means connected to said second lead, said wiper arm connected to said second terminal of said socket means, said switch means having engaged and disengaged positions, said first and second terminal means of said switch means being electrically connected when said switch means is engaged, said first and second terminal means of said switch means being electrically disconnected when said switch means is disengaged, electrical power being applied to said socket means when said switch means is engaged, luminance being emitted from said incandescent lamp when said switch means is engaged, the position of said wiper arm operating to control the intensity of the luminance emitted from said incandescent lamp when said switch means is engaged.
Claim 6
Dependent Claim 314 words
A multiple position, variable intensity lamp comprising: a. a base; b. support means having first and second ends, said second end operatively connected to said support means and said first end operatively connected to said base; c. receptacle means universally pivoted to said support means second end; d. socket means having at least first and second terminals mounted within said receptacle means, said socket means adapted receive at least one incandescent lamp; e. variable intensity means operatively mounted within said receptacle means and electrically connected to said socket means, said variable intensity means operating to control the intensity of luminance emitted by said incandescent lamp; and f. cord means having at least first and second leads electrically connected to said variable intensity means for applying electrical power to said variable intensity means; g. said variable intensity means including variable impedance means and switch means, said variable impedance means including a potentiometer having a wiper arm, said switch means having at least first and second terminal means, one side of said potentiometer connected to said first lead, the other side of said potentiometer connected said first terminal means of said switch means, said second terminal means of said switch means connected to said second lead, said wiper arm connected to said second terminal of said socket means, said switch means having engaged and disengaged positions, said first and second terminal means of said switch means being electrically connected when said switch means is engaged, said first and second terminal means of said switch means being electrically disconnected when said switch means is disengaged, electrical power being applied to said socket means when said switch means is engaged, luminance being emitted from said incandescent lamp when said switch means is engaged, the position of said wiper arm operating to control the intensity of the luminance emitted from said incandescent lamp when said switch means is engaged.
Claim 7
Dependent Claim 63 words
The lamp as claimed in claim 3 including insulating rod means and knob, said rod means operatively connected to said wiper arm and switch means, said knob connected to said rod means, said wiper arm and switch means being responsive to rotational movement of said rod means, said switch means being disengaged when said rod means is rotated to its most clockwise position.
Claim 8
Dependent Claim 270 words
A multiple position, variable intensity lamp comprising: a. a base; b. a sleeve operatively connected to said base; c. a shaft bifurcated at one end, said shaft received within said sleeve, the bifurcated end of said shaft defining a pair of outwardly diverging legs which operate to engage the interior wall of said sleeve, the engagement of said legs and interior wall operating as a frictional lock; d. receptacle means universally pivotable with respect to said shaft; e. socket means having at least first and second terminals mounted within said receptacle means, said socket means adapted to receive at least one incandescent lamp; f. variable impedance means having a wiper arm, said variable impedance means mounted within said receptacle means and operatively connected to said socket means; g. switch means having at least First and second terminals mounted within said receptacle means and electrically connected to said socket means; h. cord means having at least first and second leads for applying electrical power to said incandescent lamp, said first lead electrically connected to one side of said variable impedance means, the other side of said variable impedance means connected to said first terminal of said switch means and said first terminal of said socket means, said second lead connected to said second terminal of said switch means; i. said switch means having engaged and disengaged positions, the electrical power being applied to said socket means when said switch means is engaged, luminance emitted from said incandescent lamp when said switch means is engaged, the intensity of luminance emitted from said incandescent lamp governed by the position of said wiper arm.
Claim 9
Dependent Claim 270 words
A multiple position, variable intensity lamp comprising: a. a base; b. a sleeve operatively connected to said base; c. a shaft bifurcated at one end, said shaft received within said sleeve, the bifurcated end of said shaft defining a pair of outwardly diverging legs which operate to engage the interior wall of said sleeve, the engagement of said legs and interior wall operating as a frictional lock; d. receptacle means universally pivotable with respect to said shaft; e. socket means having at least first and second terminals mounted within said receptacle means, said socket means adapted to receive at least one incandescent lamp; f. variable impedance means having a wiper arm, said variable impedance means mounted within said receptacle means and operatively connected to said socket means; g. switch means having at least First and second terminals mounted within said receptacle means and electrically connected to said socket means; h. cord means having at least first and second leads for applying electrical power to said incandescent lamp, said first lead electrically connected to one side of said variable impedance means, the other side of said variable impedance means connected to said first terminal of said switch means and said first terminal of said socket means, said second lead connected to said second terminal of said switch means; i. said switch means having engaged and disengaged positions, the electrical power being applied to said socket means when said switch means is engaged, luminance emitted from said incandescent lamp when said switch means is engaged, the intensity of luminance emitted from said incandescent lamp governed by the position of said wiper arm.
Claim 10
Dependent Claim 79 words
The lamp as claimed in claim 5 including a swivel fixture, said swivel fixture having an offset arm and a substantially straight arm, one end of said offset arm connected to the other end of said shaft, one end of said straight arm operatively connected to said receptacle means, the other ends of each said arm connected together by means of a limited swivel joint fitting, said arms being constrained for limited swiveling movement with respect to each other.
Claim 11
Dependent Claim 59 words
The lamp as claimed in claim 5 including a flexible jointed arm interposed between said shaft and receptacle means, said flexible jointed arm having a plurality of sections defining a convoluted spiral configuration, adjacent sections slidably interconnected by means of flanges operating to permit bending of said flexible jointed arm into selected shapes and retention of the selected shape.
Claim 12
Dependent Claim 16 words
The lamp as claimed in claim 5 wherein said cord means is spiraled within said sleeve.

References Cited (Backward Citations)

US2244298A Cited
US2642246A Cited
US2715197A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-09-26 1976-03-27 1976-09-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-09-26 1980-03-27 1980-09-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-09-26 1984-03-27 1984-09-26 $7700.00 Window Closed / Lapsed

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