Rotary lift adjustable basketball goal

Abstract

An adjustable basketball goal pivotally secured to a fixed support post with pairs of interengaged pivoted lever arms. A height adjustment mechanism is secured to the support post with a unidirectional activation connection bar extending therefrom pivotally interconnected to a pair of goal lever arm supports. A gear rack portion on the activation connection bar is positioned for registration within a double gear reduction drive engagement assembly having a user engagement crank arm extending therefrom providing selective directional rotation incrementally to elevate and lower the basketball goal in relation to the support post. A handle integrated automatic height adjustment braking system is provided assuring the goal assembly is retained in position during raising and lowering thereof.

Therefore I claim: 
     
         1 . An adjustable basketball goal system for bi-directional height adjustment of a basketball goal above a playing surface comprising,
 a rigid support member,   a first support structure including backboard support arm pairs pivotally connected to the basketball goal and the rigid support member,   a second support structure including a second backboard support arm pair pivotally connected to the backboard and the rigid support member forming a parallelogrammical structure with said first support arm pair,   an extension activation bar pivotally connected at on end to the parallelogrammical structure and at the other end to a rotary actuator height adjustment assembly secured to said rigid support member, wherein rotary movement of the rotary actuator height adjustment assembly raises and lowers the extension activation bar selectively deforming said second support structure for movement of the parallelogrammical structure and the basketball goal assembly pivotally secured thereto.   
     
     
         2 . The adjustable basketball goal set forth in  claim 1  wherein said rotary actuation height adjustment assembly comprises,
 an open-ended housing, pinion shaft assembly rotatably positioned therein comprising a crank handle, automatic braking assembly, a pinion gear in communication with a first reduction main gear in said housing having a second gear reduction pivot gear for engagement with said gear ratchet insert. 
 
     
     
         3 . The adjustable basketball goal as set forth in  claim 2  wherein said automatic braking assembly comprises,
 a braking disk, a ratchet assembly and socket, a bushing and adjustable compression spring cap locking assembly. 
 
     
     
         4 . The adjustable basketball goal set forth in  claim 1  wherein said extension activation bar pivotally connected to the second support structure is in spaced parallel relation to said rigid support structure. 
     
     
         5 . The adjustable basketball goal set forth in  claim 1  wherein said activation bar moves relative to said second support structure. 
     
     
         6 . The adjustable basketball goal set forth in  claim 3  wherein said ratchet assembly comprises,
 a selective stop positioned to engage the ratchet socket. 
 
     
     
         7 . The adjustable basketball goal set forth in  claim 1  wherein said second support structure comprises arms having a proximal end and a distal end, said proximal end pivotally connected to said basketball goal assembly and said distal end configured to pivotally engage the actuation bar end, and being pivotally connected to said support post there between. 
     
     
         8 . The adjustable basketball goal set forth in  claim 2  wherein said activation bar extends through said open ended support housing by a frictional guide top cap and a guide pad channel.