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US3845351A Expired / Lapsed US ⏱️ 0.0 years remaining

Method and apparatus for the adjustment of a plurality of floodlights

Assignee: VARIABLE-PARAMETER FIXTURE DEVELOPMENT Corp A NY CORP
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Filing: 1971-03-01
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Granted: 1974-10-29
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Expires: 1991-03-01
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Abstract

Abstract An apparatus for adjusting a number of floodlights, especially for the illumination of a stage or studio, in which each of the parameters azimuth, elevation, brightness, focus and color of a bundle of light rays of each floodlight are adjusted to an optimum value for any one of a plurality of lighting effects. A housing attached to each floodlight is provided for the means for adjusting each of the parameters, for generating signals corresponding to the actual values of the respective parameters, and a control circuit for generating a signal according to the difference between a reference value and said actual value to control the associated adjustment means.

Inventors

  • 👤 R Gutmann
  • 👤 T Grieder
  • 👤 H Grohmann
  • 👤 Ballmoos F Von

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 19:15
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/12; G05B19/14; H; H05; H05B; H05B47/00; H05B47/10; H05B47/155; F; F21; F21W; F21W2131/00; F21W2131/40; F21W2131/406

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 210 words
Apparatus for adjusting a number of floodlights, especially for the illumination of a stage or studio, comprising a command console for the manual input of signals used for setting the value of different parameters such as azimuth, elevation, brightness, focus and color of the light bundle of each of the floodlights, a storage unit, input and output devices for transferring the content of said storage unit onto a data recording means or to transfer data from a recording means to the storage unit, respectively, a control unit for transforming the signals from the command console into reference values for setting the values of the different parameters into instructions for the sequence of operations in the apparatus, each floodlight being provided with a feedback control system for each parameter, the reference value signal input being connected with the output of at least one register having two inputs, one input of the register being connected with the control unit when adjusting the corresponding parameter by means of the command console, the other input of the register being connected with the storage unit when adjusting the corresponding parameter by means of the stored information, the signals at the output of each register being utilized as reference values for the corresponding feedback control system.
Claim 2
Dependent Claim 210 words
Apparatus for adjusting a number of floodlights, especially for the illumination of a stage or studio, comprising a command console for the manual input of signals used for setting the value of different parameters such as azimuth, elevation, brightness, focus and color of the light bundle of each of the floodlights, a storage unit, input and output devices for transferring the content of said storage unit onto a data recording means or to transfer data from a recording means to the storage unit, respectively, a control unit for transforming the signals from the command console into reference values for setting the values of the different parameters into instructions for the sequence of operations in the apparatus, each floodlight being provided with a feedback control system for each parameter, the reference value signal input being connected with the output of at least one register having two inputs, one input of the register being connected with the control unit when adjusting the corresponding parameter by means of the command console, the other input of the register being connected with the storage unit when adjusting the corresponding parameter by means of the stored information, the signals at the output of each register being utilized as reference values for the corresponding feedback control system.

References Cited (Backward Citations)

US3265932A Cited
US3448338A Cited
US3514670A Cited
US3508113A Cited
US3579030A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-10-28 1978-04-29 1978-10-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-10-28 1982-04-29 1982-10-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-10-28 1986-04-29 1986-10-29 $7700.00 Window Closed / Lapsed

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