Excavating assembly system with collared fastening system

Abstract

A lock assembly for securing a wear member to a support structure includes a collar and a pin. The collar includes a top surface, a bottom surface opposite the top surface, an outer circumferential profile including at least eight planar surfaces extending around a perimeter of the collar between the top and bottom surfaces, and a bore extending along a central axis from the top surface to the bottom surface. The pin is configured for receipt in the bore of the collar.

1 - 20 . (canceled) 
     
     
         21 . A wear member assembly for excavating equipment comprising:
 a wear member comprising:
 an upper leg extending rearward away from a leading edge of the wear member, the leading edge configured to engage ground, to a rear surface; 
 a passage extending along a first central axis through the upper leg from a top surface; 
 a support structure recess formed into a lower side of the upper leg and extending rearward through the rear surface of the upper leg, the support structure recess configured to receive a support structure when the wear member is secured to excavating equipment; and 
 a lock recess extending upward from a ceiling of the support structure recess to the passage; and 
   a collar configured for receipt within the lock recess of the wear member from the lower side of the upper leg, the collar comprising a bore extending from a top surface of the collar to a bottom surface of the collar, the bore being coaxial with the passage of the wear member when the collar is seated within the lock recess.   
     
     
         22 . The wear member assembly of  claim 21 , wherein the wear member comprises at least one pocket formed into a wall of the lock recess and the collar comprises at least one biased detent mechanism extending outward away from the bore, the at least one detent mechanism configured to be at least partially disposed within the at least one pocket when the collar is seated within the lock recess. 
     
     
         23 . The wear member assembly of  claim 22 , wherein the at least one detent mechanism is configured to retain the collar within the lock recess. 
     
     
         24 . The wear member assembly of  claim 22 , wherein the at least one detent mechanism comprises a first detent mechanism and a second detent mechanism. 
     
     
         25 . The wear member assembly of  claim 24 , wherein the first detent mechanism is disposed adjacent a first end of the collar and the second detent mechanism is disposed adjacent a second end of the collar. 
     
     
         26 . The wear member assembly of  claim 24 , wherein the at least one pocket comprises a first pocket and a second pocket disposed on first and second walls of the lock recess, the first and second walls of the lock recess being tapered inward with respect to the first central axis toward the top surface of the wear member such that the first and second walls of the lock recess are spaced apart by a first distance in an upper region of the lock recess and by a second distance greater than the first distance in a lower region of the lock recess, the first distance being less than a corresponding width of the collar from an outward facing surface of the first detent mechanism to an outward facing surface of the second detent mechanism such that, as the collar is inserted into the lock recess, the first and second walls increasingly compress a flexible member of each of the first and second detent mechanisms until the first and second detent mechanisms are aligned with a respective one of the first and second pockets. 
     
     
         27 . The wear member assembly of  claim 21 , wherein an outer circumferential profile of the collar is defined by a plurality of curved surfaces extending between adjacent planar sides of the collar. 
     
     
         28 . The wear member assembly of  claim 21 , wherein the collar has an irregular outer circumferential profile including a plurality of minor arcs each having a radius of curvature different than each other minor arc of the plurality of minor arcs. 
     
     
         29 . The wear member assembly of  claim 28 , wherein the irregular outer circumferential profile of the collar is asymmetric about any plane parallel to a central axis of the bore. 
     
     
         30 . The wear member assembly of  claim 21 , wherein the collar has an outer circumferential profile includes at least eight planar sides. 
     
     
         31 . The wear member assembly of  claim 21 , wherein the collar and lock recess are sized and shaped such that the collar is installable into the lock recess in only one orientation. 
     
     
         32 . The wear member assembly of  claim 21 , wherein the collar comprises a protrusion jutting forward along a front side of the collar. 
     
     
         33 . The wear member assembly of  claim 21 , wherein a central region of the upper leg has an increased vertical profile relative to portions of the upper leg on each lateral side of the central region, the increased vertical profile accommodating a height of the collar between the top and bottom surfaces of the collar to receive the collar in the lock recess with the bottom surface of the collar flush with or disposed above the ceiling of the support structure recess. 
     
     
         34 . The wear member assembly of  claim 21 , wherein a rear surface of the collar extending between the top and bottom surfaces of the collar and defining a rear side of the collar is angled with respect to the central axis of the bore. 
     
     
         35 . The wear member assembly of  claim 34 , wherein the rear surface of the collar is angled away from the central axis of the bore in a direction extending from the top surface of the collar to the bottom surface of the collar at approximately 2-12° with respect to the central axis of the bore. 
     
     
         36 . The wear member assembly of  claim 21 , wherein a front side of the collar and a rear side of the collar are tapered toward the central axis of the bore in a direction extending from the bottom surface of the collar to the top surface of the collar. 
     
     
         37 . The wear member assembly of  claim 21 , wherein the wear member is a shroud and further comprises a lower leg extending rearward away from the leading edge, the shroud including a transverse channel formed between the upper leg and the lower leg, the transverse channel configured to receive a lip of the excavating equipment. 
     
     
         38 . The wear member assembly of  claim 37 , wherein the shroud comprises a contact pad formed in the transverse channel, the contact pad configured to engage a front surface of the lip. 
     
     
         39 . The wear member assembly of  claim 37 , wherein the support structure recess extends between two opposing slots extending forward from the rear surface and configured to receive opposing wings of a fixation base secured to the lip. 
     
     
         40 . The wear member assembly of  claim 21 , wherein when the collar is seated within the lock recess, the bottom surface of the collar is above ceiling of the support structure recess. 
     
     
         41 - 64 . (canceled)