Mechanically attached tip assembly

Abstract

A tip assembly has a replaceable wear member mounted to an adapter carried on the cutting edge of an implement of an earth-working machine. The adapter has an external surface formed to engage a complementary internal cavity of the wear member and includes a pair of transversely spaced sides at least one of the transversely spaced sides include a guide arrangement and a retainer pocket positioned therein. The wear member has a body with an exterior ground-engaging surface, a mounting end, an adapter receiving cavity and at least one ear extending from the mounting end. The at least one ear is configured to be received by the guide arrangement when the wear member is positioned on the adapter.

1 . A tip assembly comprising: 
 an adapter having a forward end portion, a pair of spaced surfaces, and a pair of spaced sides, at least one of said spaced sides having a retainer pocket positioned therein and a guide arrangement positioned thereon; and    a wear member having a body with an exterior ground-engaging surface, an adapter receiving cavity, a mounting end, and at least one ear extending from said mounting end, said cavity being configured to receive said adapter thereinto, said one ear being configured to be received in relationship with said guide arrangement.    
   
   
       2 . The tip assembly of  claim 1  wherein of said guide arrangement includes a raised rib.  
   
   
       3 . The tip assembly of  claim 2  wherein said guide arrangement includes an upper and lower raised shoulder positioned on each side of said raised rib.  
   
   
       4 . The tip assembly of  claim 3  wherein said one ear is positioned between said upper and lower raised shoulders and over said raised rib when said wear member is positioned on said adapter.  
   
   
       5 . The tip assembly of  claim 3  wherein said retainer pocket has a bottom surface lying along a first plane, said at least one spaced sides lying along a second plane outboard of said first plane, said raised rib includes a raised surface lying along a third plane outboard of said second plane, and said upper and lower raised shoulder each include an outer edge lying along a fourth plane outboard of said third plane.  
   
   
       6 . The tip assembly of  claim 2  wherein said wear member further includes a through-hole located in said body, said through-hole extending from said ground engaging surface to said adapter receiving cavity and alignable with said retainer pocket in said adapter.  
   
   
       7 . The tip assembly of  claim 6  wherein said raised rib has a pair of spaced sides being spaced apart a predetermined distance and wherein said retainer pocket defines a bore having a predetermined diameter, said bore extending radially outward at a distance greater than said predetermined distance so as to be disposed outboard of said spaced sides of said raised rib.  
   
   
       8 . The tip assembly of  claim 7  wherein said one ear includes a groove facing the adapter receiving cavity, said groove includes a pair of opposed sides and an inner surface, said spaced sides and said outer surface of said raised rib are disposed in close abutting relationship to said opposed sides and said inner surface of said groove, respectively when said wear member is positioned on said adapter.  
   
   
       9 . The tip assembly of  claim 1  including a retainer for selectively retaining said wear member to said adapter.  
   
   
       10 . The tip assembly of  claim 9  wherein said retainer includes a barrel member adapted for engagement with said adapter to prevent the rotation of said barrel member upon the application of a retaining force thereto.  
   
   
       11 . The tip assembly of  claim 10  wherein said barrel member includes a threaded portion and wherein said retainer includes a fastening member having a threaded stud portion on one end thereof and a tool socket in the other end thereof, and said fastening member is adapted to be threadably engageable with said threaded portion of said barrel member.  
   
   
       12 . The tip assembly of  claim 11  wherein said barrel member includes a tapered socket and wherein said fastening member includes a tapered portion that lockingly engages said tapered socket in said barrel member.  
   
   
       13 . The tip assembly of  claim 12  wherein said barrel member includes a pair of spaced surfaces positioned on a second end thereof that align with a pair of spaced sides on a raised rib of said adapter.  
   
   
       14 . A wear member for a tip assembly, said wear member comprising: 
 an exterior ground-engaging surface;    a mounting end;    a pair of ears extending from said mounting end;    an adapter receiving cavity opening through said mounting end, said adapter receiving cavity including a forward end portion a pair of spaced surfaces and a pair of spaced sides; and    a through-hole extending from said exterior ground-engaging surface to at least one of said spaced sides.    
   
   
       15 . The wear member of  claim 14 , wherein at least one of said pair of ears including a groove positioned thereon facing toward said adapter receiving cavity opening and extending from said through hole along a central axis.  
   
   
       16 . The wear member of  claim 15 , wherein said groove includes a pair of opposite side surfaces and a transverse surface.  
   
   
       17 . The wear member of  claim 16 , wherein said other ear includes a groove positioned thereon facing toward said adapter receiving cavity opening and extending from said through hole along a central axis.  
   
   
       18 . The wear member of  claim 14 , wherein said through hole is a slot.  
   
   
       19 . The wear member of  claim 18 , including a through hole extending from said exterior ground-engaging surface to the other one of said spaced sides.  
   
   
       20 . An adapter for a tip assembly, said adapter comprising: 
 a forward end portion;    a pair of spaced surfaces;    a pair of spaced sides; and    wherein said at least one of said spaced sides having a retainer pocket positioned therein and a guide arrangement positioned thereon.