Cleaning system

Abstract

A cleaning system has a high velocity fan held within an air-directing casing movably mounted between the lower ends of an inverted U-shaped yoke. The blade configuration of the fan assures that air is directed outwardly in a narrow beam. The system rotates about a vertical extendable support tube and the casing and fan oscillate about a horizontal axis through a vertical angle which can extend from horizontal to near-vertical in the upper and lower direction. A crank arm connects to the U-shaped yoke and to one end of a crank rod which connects to the fan casing. Rotation of the crank arm displaces the crank rod so that the casing and fan oscillate about the horizontal axis. The crank arm is adjustable in length by spaced apart holes. The length of the crank rod is adjustable by using a two piece crank rod with the free end of each crank rod piece being adjustably secured to a connecting rod. The newly designed crank rod having additional spaced apart holes provides additional adjustability features.

1 . In a cleaning system having a fan within a casing, a u-shaped yoke supporting the casing and fan providing vertical oscillating movement of the casing and fan with respect to the yoke, a vertical shaft connected to the yoke providing horizontal movement of the system about the vertical shaft, a crank rod movably connected to the casing, a crank arm movably connected to the yoke and the crank rod and having spaced apart holes therein to provide adjustment to the effective length of the crank rod, the combination with the crank arm and the crank rod of crank rod length adjusting means.  
   
   
       2 . The combination as claimed in  claim 1  wherein the length adjusting means includes a crank arm having multiple adjustment apertures and a two piece crank rod, one end of each piece providing for threadable connection therewith, and a connecting rod having two ends, each end cooperatively threaded to be received by each threaded end of the two piece crank rod thereby providing an adjustable length crank rod.  
   
   
       3 . The combination as claimed in  claim 2  wherein the crank rod minimum length is less than 20 inches.  
   
   
       4 . The combination as claimed in  claim 2  wherein the crank rod maximum length is at least 24 inches.  
   
   
       5 . The combination as claimed in  claim 3  wherein the crank rod maximum length is at least 24 inches.  
   
   
       6 . The combination as claimed in  claim 4  wherein the crank rod minimum length is less than 20 inches.  
   
   
       7 . The combination as claimed in  claim 2  wherein the crank arm and the adjustable length crank rod enables the casing and fan to be oscillated between a horizontal position to a vertical position of 70 degrees.  
   
   
       8 . The combination as claimed in  claim 2  wherein the adjustable length crank rod enables the casing and fan to be oscillated between a horizontal position and to a lower position of −70 degrees.  
   
   
       9 . The combination as claimed in  claim 2  wherein the adjustable length crank rod enables the casing and fan to be oscillated between a vertical position of 70 degrees to a lower position of −70 degrees.  
   
   
       10 . The combination as claimed in  claim 2  wherein the crank rod maximum length is at least 24 inches and the minimum length is less than 20 inches.  
   
   
       11 . The combination as claimed in  claim 1  wherein the crank rod length adjusting means includes first and second crank rod pieces each having first and second ends and a connecting rod having first and second ends, the first crank rod piece second end connecting to the connecting rod first end and the second crank rod piece first end connecting to the connecting rod second end.  
   
   
       12 . The combination as claimed in  claim 11  wherein the crank rod minimum length is less than 20 inches.  
   
   
       13 . The combination as claimed in  claim 11  wherein the crank rod maximum length is at least 24 inches.  
   
   
       14 . The combination as claimed in  claim 12  wherein the crank rod maximum length is at least 24 inches.  
   
   
       15 . The combination as claimed in  claim 13  wherein the crank rod minimum length is less than 20 inches.  
   
   
       16 . The combination as claimed in  claim 11  wherein the crank rod length adjusting means enables the casing and fan to be oscillated between a horizontal position to a substantially vertical position of at least 70 degrees.  
   
   
       17 . The combination as claimed in  claim 11  wherein the crank arm and the crank rod length adjusting means enables the casing and fan to be oscillated between a horizontal position to a lower position of −70 degrees.  
   
   
       18 . The combination as claimed in  claim 11  wherein the crank rod length adjusting means enables the casing and fan to be oscillated between a substantially vertical position of at least 70 degrees to a lower position of −70 degrees.  
   
   
       19 . The combination as claimed in  claim 1  including means determining the correct crank arm position and crank rod length for a fan oscillating between a desired vertical position and a desired lower position.  
   
   
       20 . The combination as claimed in  claim 2  including means determining the correct crank arm position and crank arm length for a fan oscillating between a desired vertical position and a desired lower position.  
   
   
       21 . The combination as claimed in  claim 11  including means determining the correct crank arm position and crank rod length for a fan oscillating between a desired substantially vertical position and a desired lower position.  
   
   
       22 . In a cleaning system having a fan within a casing, a U-shaped yoke supporting the casing and fan providing vertical oscillating movement of the casing and fan with respect to the yoke, a vertical support tube connected at one end to a supporting overhead mounting surface and the other end connected to the yoke providing horizontal movement of the system about the vertical support tube, a crank rod movably connected to the casing, a crank arm movably connected to the yoke and the crank rod and having spaced apart apertures therein to provide adjustment to the effective length of the crank rod, the combination with the crank arm, the crank rod and the vertical support tube of vertical support tube and crank rod length adjusting means.  
   
   
       23 . The combination as claimed in  claim 22  wherein the system has at least one sway brace, the combination with the at least one sway brace of sway brace length adjusting means.