# US 2019/0376263 A1 · Wear member, edge and process of installation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0376263 A1 - Document ID: US20190376263A1 - Status: Published application - Kind: A1 - Application number: 16/370,845 - Filed: 2019-03-29 - Published: 2019-12-12 - Earliest claimed: 2018-03-30 - Assignees: Esco Group LLC - Applicants: ESCO Group LLC - Inventors: Clinton A. Wood; Cameron R. Leedham - Web page: https://patentgrep.com/patent/US20190376263A1 ## CPC - E02F 9/2883: {Wear elements for buckets or implements in general} - E02F 3/40: Dippers; Buckets {; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets (devices to connect tools to arms or booms E02F3/3604; teeth therefor E02F9/28)} - E02F 3/60: Buckets, scrapers, or other digging elements - E02F 3/8152: {Attachments therefor, e.g. wear resisting parts, cutting edges (E02F3/8155, E02F3/8157 take precedence; teeth per se E02F9/28)} - E02F 9/2816: {Mountings therefor} - E02F 9/2858: {characterised by shape} - E02F: DREDGING; SOIL-SHIFTING (winning peat E21C49/00) ## Abstract Shrouds are secured to earth-working edges of many kinds of earth working equipment to extend the service life of the equipment. The shrouds include opposed surfaces to define a cavity to receive the edge. Each of the opposed surfaces includes a recess to receive a boss on the edge, wherein the longitudinal axis of the recess on the first surface is angularly oriented in a lateral direction to the longitudinal axis of the recess on the second surface. ## Claims ### Claim 1 A shroud for an earth-working edge on earth working equipment comprising a front end and a rearwardly-opening cavity including opposed first and second surfaces to straddle the edge and a front surface extending between the first and second surfaces, the first surface including a recess with opposed planar bearing surfaces to bear against a boss on the edge, wherein the bearing surfaces converge toward the front surface. ### Claim 2 (depends on 1) The shroud of claim 1 wherein the bearing surfaces converge at an angle of 10-40 degrees to each other. ### Claim 3 (depends on 1) The shroud of claim 1 wherein the second surface includes a recess with opposed side bearing surfaces to bear against a boss on the edge. ### Claim 4 (depends on 3) The shroud of claim 3 wherein the recess in the first surface has a first longitudinal axis, and the recess in the second surface has a second longitudinal axis that is angularly oriented in a lateral direction to the first longitudinal direction. ### Claim 5 (depends on 3) The shroud of claim 3 including a lock-receiving hole opening in one of the first and second surfaces to receive a lock rearward of the respective boss. ### Claim 6 (depends on 1) The shroud of claim 1 including a lock-receiving hole opening in the first surface rearward of the planar bearing surfaces. ### Claim 7 A shroud for an earth-working edge on earth working equipment comprising a front end and a rearwardly-opening cavity including opposed first and second surfaces to straddle the edge and a front surface extending between the first and second surfaces, each of the first and second surfaces including a recess to receive a boss on the edge, and each said recess including opposed bearing surfaces to bear against the received boss, wherein the opposed bearing surfaces in the recess in the first surface converge toward the front surface. ### Claim 8 (depends on 7) The shroud of claim 7 wherein the bearing surfaces in the recess in the first surface converge at an angle of 10-40 degrees to each other. ### Claim 9 (depends on 7) The shroud of claim 7 wherein the recess in the first surface has a first longitudinal axis, and the recess in the second surface has a second longitudinal axis that is angularly oriented in a lateral direction to the first longitudinal direction. ### Claim 10 (depends on 7) The shroud of claim 7 including a lock-receiving hole opening in the first surface rearward of converging bearing surfaces. ### Claim 11 A shroud for an earth-working edge on earth working equipment comprising a front end and a rearwardly-opening cavity including opposed first and second surfaces to straddle the edge and a front surface extending between the first and second surfaces, the first surface including a first recess to receive a first boss on the edge, the first recess having a first longitudinal axis, the second surface including a second recess to receive a second boss on the edge, and the second recess having a second longitudinal axis that is angularly oriented in a lateral direction to the first longitudinal axis. ### Claim 12 (depends on 11) The shroud of claim 11 wherein the first recess includes opposed bearing surfaces that converge toward the front surface. ### Claim 13 (depends on 12) The shroud of claim 12 wherein the bearing surfaces are planar and converge at an angle of 10-40 degrees to each other. ### Claim 14 (depends on 13) The shroud of claim 13 including a lock-receiving hole opening in the first surface rearward of converging surfaces. ### Claim 15 (depends on 11) The shroud of claim 11 including a lock-receiving hole opening in the first surface to receive a lock rearward of boss. ### Claim 16 A shroud for an earth-working edge on earth working equipment comprising a front end and a rearwardly-opening cavity including opposed first and second surfaces to straddle the edge and a front surface extending between the first and second surfaces, the first surface including a first recess with opposed first bearing surfaces to bear against a boss on the edge, the first bearing surfaces converging toward the front surface, and the second surface including a second recess with opposed second bearing surfaces to bear against a boss on the edge, wherein one of the first bearing surfaces is parallel to the second bearing surfaces and the other first bearing surface is transverse to the second bearing surfaces. ### Claim 17 (depends on 16) The shroud of claim 16 wherein the first bearing surfaces converge at an angle of 10-40 degrees to each other. ### Claim 18 (depends on 16) The shroud of claim 16 wherein the first recess has a first longitudinal axis, and the second recess has a second longitudinal axis that is angularly oriented in a lateral direction to the first longitudinal direction. ### Claim 19 (depends on 16) The shroud of claim 16 including a lock-receiving hole opening in one of the first and second surfaces to receive a lock rearward of boss. ### Claim 20 A shroud for a bucket lip having a forward-facing leading surface, primary segments where the leading surface extends parallel to the width of the bucket, and transition segments where the leading surface is inclined to the primary segments, the shroud comprising a front end, a rearwardly-opening a cavity to receive the lip such that the shroud overlies a portion of the leading surface, the cavity including first and second opposed surfaces and a front surface extending between the first and second surfaces to oppose the leading surface, and a lock-receiving opening having an elongate configuration with a length along which a major axis extends, wherein the front surface and the major axis are generally parallel to the leading surface in the transition segment received in the cavity. ### Claim 21 (depends on 20) The shroud of claim 20 wherein the first surface includes a recess with opposed bearing surfaces to bear against a boss on the edge, wherein the bearing surfaces converge toward the front surface. ### Claim 22 (depends on 21) The shroud of claim 21 wherein the opposed bearing surfaces are planar. ### Claim 23 (depends on 22) The shroud of claim 22 wherein the bearing surfaces converge at an angle of 10-40 degrees to each other. ### Claim 24 (depends on 20) The shroud of claim 20 wherein the second surface includes a recess with opposed side bearing surfaces to bear against a boss on the edge. ### Claim 25 (depends on 24) The shroud of claim 24 wherein the recess in the first surface has a first longitudinal axis, and the recess in the second surface has a second longitudinal axis that is angularly oriented in a lateral direction to the first longitudinal direction. ### Claim 26 A lip assembly for an earth working bucket comprising: a lip having a forward-facing leading surface, primary segments where the leading surface extends parallel to the width of the bucket, and transition segments where the leading surface is inclined to the primary segments; and at least one shroud secured to a transition segment, the shroud including a front end, a rearwardly-opening a cavity to receive the lip such that the shroud overlies a portion of the leading surface, the cavity including first and second opposed surfaces and a front surface extending between the first and second surfaces to oppose the leading surface, and a lock-receiving opening having an elongate configuration with a length along which a major axis extends, wherein the front surface and the major axis are generally parallel to the leading surface in the transition segment received in the cavity. ### Claim 27 (depends on 26) The lip assembly of claim 26 wherein the first surface includes a recess with opposed bearing surfaces to bear against a boss on the edge, and the bearing surfaces converge toward the front surface. ### Claim 28 (depends on 27) The lip assembly of claim 27 wherein the opposed bearing surfaces are planar. ### Claim 29 (depends on 28) The lip assembly of claim 28 wherein the bearing surfaces converge at an angle of 10-40 degrees to each other. ### Claim 30 (depends on 26) The lip assembly of claim 26 wherein the second surface includes a recess with opposed side bearing surfaces to bear against a boss on the edge. ### Claim 31 (depends on 30) The lip assembly of claim 30 wherein the recess in the first surface has a first longitudinal axis, and the recess in the second surface has a second longitudinal axis that is angularly oriented in a lateral direction to the first longitudinal direction. ### Claim 32 A lip for an excavating bucket comprising a forward-facing leading surface, an inner surface, an outer surface, primary segments where the leading surface extends parallel to the width of the bucket, transition segments where the leading surface is inclined to the primary segments, at least one transition segment including a first boss with a first longitudinal axis on the inner surface and a second boss with a second longitudinal axis on the outer surface that is angularly oriented in a lateral direction to the first longitudinal axis. ### Claim 33 (depends on 32) The lip of claim 32 wherein the first boss includes a pair of planer bearing surfaces that converge toward the leading surface. ### Claim 34 (depends on 32) The lip of claim 32 wherein the bearing surfaces converge at an angle of 10-40 degrees to each other. ### Claim 35 A lip for an excavating bucket comprising a forward-facing leading surface, an inner surface, an outer surface, primary segments where the leading surface extends parallel to the width of the bucket, transition segments where the leading surface is inclined to the primary segments, a plurality of first bosses each being identical and having a first longitudinal axis on the inner surface and a plurality of second bosses each being identical and having a second longitudinal axis on the outer surface, wherein the first longitudinal axis of at least one of the first bosses is angularly oriented in a lateral direction to at least one of the second longitudinal axes. ### Claim 36 A lip for an excavating bucket comprising a forward-facing leading surface, an inner surface, an outer surface, primary segments where the leading surface extends parallel to the width of the bucket, transition segments where the leading surface is inclined to the primary segments, a plurality of bosses on one of the inner and outer surfaces, the bosses being identical with each having a longitudinal axis, and at least one said boss being oriented such that its longitudinal axis is angled relative to at least one other of the bosses. ### Claim 37 (depends on 36) The lip of claim 36 including a plurality of second bosses on the other of the inner and outer surfaces, each of the second bosses being identical and having a second longitudinal axis, wherein the second longitudinal axes are parallel to each other. ### Claim 38 (depends on 37) The lip of claim 37 wherein the second bosses are on the outer surface. ### Claim 39 A lip for an excavating bucket comprising a forward-facing leading surface, an outer surface, an inner surface with a beveled portion adjacent the leading surface and a rear portion rearward of the beveled portion, a plurality of first bosses fixed to the beveled portion and entirely forward of the rear portion, and a plurality second bosses separate from the first bosses fixed to the outer surface. ### Claim 40 (depends on 39) The lip of claim 39 including primary segments where the leading surface extends parallel to the width of the bucket and transition segments where the leading surface is inclined to the primary segments. ### Claim 41 (depends on 40) The lip of claim 40 wherein at least some of each of the first and second bosses are fixed to the transition segments with each of such bosses having a longitudinal axis, and the longitudinal axes of such bosses fixed to the outer surface are angularly oriented in a lateral direction to the longitudinal axes of such bosses fixed to the beveled portion. ### Claim 42 (depends on 39) The lip of claim 39 wherein the first bosses include bearing surfaces to bear against complementary surfaces on boss that converge toward the leading surface. ### Claim 43 (depends on 42) The lip of claim 42 wherein the bearing surfaces are planar and converge at an angle of 10-40 degrees to each other. ### Claim 44 A process for installing a wear member on an earth-working edge on earth working equipment, the process comprising: providing a shroud including spaced legs forming a cavity wherein each leg includes a recess defined by opposed bearing surfaces that receives a boss on the edge; moving the shroud rearward so the edge is received into the cavity, one boss slides along the opposed bearing surfaces of one said recess and one boss approaches one of the bearing surfaces in the other recess; and inserting a lock into an opening in the shroud to engage the shroud and one of the bosses to secure the shroud to the edge.