Cleaning method and apparatus for parabolic cellular louvers for lighting fixtures
First Claim
1. Apparatus for cleaning a lighting fixture louver which has several rows of cells that are defined by parabolically curved wall means and that are open top and bottom, said apparatus comprising:
- a cleaning roller the surface of which consists of circumferentially discrete longitudinal rows of individual cleaning lugs, the longitudinal and circumferential lug pitch being equal to the pitch of the louver cells with longitudinal and circumferential spacing between adjacent lugs substantially equal to the thickness of said cell walls, and each lug having a radial depth slightly greater than the louver depth and having arcuate perimetrical surfaces such that the lug may scrub the surface of the entire wall means of a cell as it rolls through the cell.
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Accused Products
Abstract
An apparatus for cleaning a lighting fixture louver of the type which has parabolic cells that are open top and bottom. A cleaning roller of a graft polyol polyether urethane having an indentation load deflection of the order of 100 has a surface which consists of circumferentially discrete rows of individual cleaning lugs, and each row has enough lugs to clean an entire row of cells in a louver module, with a longitudinal and circumferential lug pitch equal to the pitch of the louver cells. Each cleaning lug has a perimetrical surface that may scrub the surface of the entire wall means of a cell, and has a radial depth slightly greater than the louver depth. The cleaning roller is journalled atop a cleaning liquid tank with its lower portion in the liquid, and a pressure roller surmounts the cleaning roller to press a louver onto the cleaning roller with a row of louver cells fully engaged with the row of cleaning lugs at the top of the roller. Rotation of the cleaning roller drives the louver endwise between the cleaning and pressure rollers. Drain pans return liquid that flows off the louver back into the tank.
14 Citations
20 Claims
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1. Apparatus for cleaning a lighting fixture louver which has several rows of cells that are defined by parabolically curved wall means and that are open top and bottom, said apparatus comprising:
a cleaning roller the surface of which consists of circumferentially discrete longitudinal rows of individual cleaning lugs, the longitudinal and circumferential lug pitch being equal to the pitch of the louver cells with longitudinal and circumferential spacing between adjacent lugs substantially equal to the thickness of said cell walls, and each lug having a radial depth slightly greater than the louver depth and having arcuate perimetrical surfaces such that the lug may scrub the surface of the entire wall means of a cell as it rolls through the cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. Apparatus for cleaning a lighting fixture louver which has several rows of cells that are defined by parabolically curved wall means and that are open top and bottom, said apparatus comprising, in combination:
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a base; a cleaning liquid supply tank extending transversely of the base; a cleaning roller journalled above said supply tank with its lower portion in the tank, said cleaning roller having a surface which consists of circumferentially discrete longitudinal rows of individual cleaning lugs, each of said rows being substantially as long as a row of cells in a louver, the longitudinal and circumferential lug pitch being equal to the pitch of the louver cells with longitudinal and circumferential spacing between adjacent lugs substantially equal to the thickness of said cell walls, and each lug having a radial depth slightly greater than the louver depth and having arcuate perimetrical surfaces such that the lug may scrub the surface of the entire wall means of a cell as it rolls through the cell; rail means on the base to support a louver for engagement by the upper portion of the cleaning roller; means for rotating said cleaning roller about its longitudinal axis; and a pressure roller surmounting the cleaning roller to press a louver onto said cleaning roller with a row of louver cells fully engaged with the row of cleaning lugs at the top of the roller, whereby the cleaning roller may be rotated to constantly transfer cleaning liquid from the tank to the louver and to progressively clean successive rows of cells by the scrubbing action of successive rows of the cleaning lugs. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification