Method and device for fans

Abstract

Fans with wings that detach, fold or twist for the purpose of cleaning, transport and storage. The twisting embodiment can be used for adjusting the force of the air and its direction. The invention applies to domestic and industrial fans and all kinds of fans including floor standing upright fans, table fans, clip-on fans and ceiling fans.

1 . A method and device for a fan comprising,
 a. central motor portion that rotates when energized,   b. a sleeve that is attached to the said central portion and is shaped for one end of the said fan blade to fit in the said sleeve,   c. a means to lock the said blade in the said sleeve,   d. a means to release the said blade from the said sleeve,
 whereby fan blades can be temporarily removed from rotating parts for cleaning and other purposes. 
   
   
   
       2 . A method and device for a fan comprising,
 a. central motor portion that rotates when energized,   b. at least one foldable blade,   c. a locking device to hold the said blade straight when the said fan is operating,   d. a release device to enable the blade to fold at a hinge in the said blade,
 whereby fan blades can be folded at the said hinge for cleaning and other purposes. 
   
   
   
       3 . A method and device for a fan comprising,
 a. central motor portion that rotates when energized,   b. a housing connected to the said motor portion,   c. a connecting piece being one end of a fan blade,   d. a means to lock the said connecting piece into the said housing,   e. a means to release the said connecting piece so that it may turn on its longitudinal axis without being disconnected from the said housing.
 whereby fan blades can be twisted while still attached to the said housing for cleaning and other purposes. 
   
   
   
       4 . A method and device for a fan as claimed in  claim 1  wherein the fan is selected from one of the following namely a ceiling fan, a wall fan, a table fan, a clip-on fan, a hand-held fan, an fan for use in industry and a fan for use in the domestic market. 
   
   
       5 . A method and device for a fan as claimed in  claim 2  wherein the fan is selected from one of the following namely a ceiling fan, a wall fan, a table fan, a clip-on fan, a hand-held fan, an fan for use in industry and a fan for use in the domestic market. 
   
   
       6 . A method and device for a fan as claimed in  claim 3  wherein the fan is selected from one of the following namely a ceiling fan, a wall fan, a table fan, a clip-on fan, a hand-held fan, an fan for use in industry and a fan for use in the domestic market. 
   
   
       7 . A method and device for a fan as claimed in  claim 2  further comprising a removable pin to hold together the two parts of the said blade and to hold the said two parts straight and in the same plain. 
   
   
       8 . A method and device for a fan as claimed in  claim 3  further comprising a means to prevent the said connecting piece from exiting from the said housing. 
   
   
       9 . A method and device for a fan as claimed in  claim 2  further comprising a means to electronically operate the said folding and straightening of the said blade. 
   
   
       10 . A method and device for a fan as claimed in  claim 3  further comprising a means to electronically operate the said locking and unlocking means of the said blade.