Hole saw assembly

Abstract

A hole-saw assembly including a hole-saw having at one end a plurality of cutting teeth and at the other end two shafts. The assembly includes a mandrel coaxially aligned with said hole-saw and including a body having two bores therethrough coaxially aligned with said shafts. An annulus located on top of the body is coaxially aligned with said mandrel and hole-saw and includes two holes, the annulus rotatable around its longitudinal axis from a first to a second position. In the first position, the annulus holes are aligned with the bores and shafts allowing the shafts to be freely insertable and removable and in the second position the holes are misaligned to lock the shafts to the annulus. Such an arrangement allows the hole-saw and the mandrel to be easily and quickly mountable and demountable.

1 . A connector assembly comprising: 
 a base adapted to rotate around a longitudinal axis and including an attachment means for attaching a device thereto, said base further including a connecting means;    a co-axial driving means adapted to rotate around said longitudinal axis and adapted for rotational engagement of said base connecting means;    a co-axial locking ring adapted to rotate around its longitudinal axis and further adapted to rotate between a first and a second position relative to said driving means, said locking ring adapted to engage said base connecting means when in said first position to prevent longitudinal relative motion of said base, driving means and said locking ring.    
   
   
       2 . The connector assembly as in  claim 1  wherein when said locking ring is in said second position, said base is free for longitudinal motion from said driving means and locking ring.  
   
   
       3 . The connector assembly as in  claim 1  wherein said attachment means extends outwardly in the longitudinal direction and said connecting means extends inwardly in the opposite direction.  
   
   
       4 . The connector assembly as in  claim 3  wherein said locking ring is biased to said first position.  
   
   
       5 . A connector assembly comprising: 
 a boss having a longitudinal axis, said boss including an attachment means extending longitudinally in one direction, said boss further including a projection extending in an opposite direction, said projection including a shoulder;    a driving means coaxially aligned with said boss and including a body having a passage coaxially aligned with said projection;    a locking ring coaxially aligned with said driving means and boss and including a passage, said locking ring rotatable around its longitudinal axis from a first to a second position, wherein in said first position said locking ring passage is aligned with said driving means passage and said projection allowing said projection to be freely insertable and removable and in said second position said locking ring passage being misaligned thereby locking said projection shoulder to said driving means.    
   
   
       6 . The connector assembly as in  claim 5  wherein there are at least two projections co-axially aligned with the two driving means passages and the two locking ring passages.  
   
   
       7 . A connector assembly comprising: 
 a base having a longitudinal axis and including an attachment means for attaching a device thereto, said base further including a connecting means;    a co-axial mating means adapted to engage said base;    a co-axial locking ring adapted to rotate around its longitudinal axis between a first and a second position relative to said mating means, said locking ring adapted to engage said base connecting means when in said first position to prevent longitudinal relative motion of said base, mating means and said locking ring.