# US 11,111,637 B2 · Curb former > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,111,637 B2 - Document ID: US11111637B2 - Status: Granted - Kind: B2 - Application number: 16/228,411 - Filed: 2018-12-20 - Published: 2019-07-11 - Granted: 2021-09-07 - Earliest claimed: 2018-01-05 - Assignees: Lura Enterprises, Inc. - Applicants: Lura Enterprises, Inc. - Inventors: Dennis K. Lura - Web page: https://patentgrep.com/patent/US11111637B2 ## CPC - E01C 19/236: {Construction of the rolling elements, e.g. surface configuration, rolling surface formed by endless track} - E01C 19/24: hand propelled ({E01C19/235, } E01C19/27 - E01C19/29, {E01C19/41} take precedence) - E01C 19/506: {for kerbs, gutters or similar structures, e.g. raised portions, median barriers} - E01C: CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR (forming roads or like surfaces by compacting or grading snow or ice E01H) ## Abstract A curb former (10) includes a rotatable drive shaft (20), a gutter drum (80), and a curb profiling drum (100). The gutter drum (80) is secured to the drive shaft (20) such that the drive shaft (20) and gutter drum (80) rotate together. The curb profiling drum (100) is detachably secured relative to both the drive shaft (20) and the gutter drum (80). This configuration allows one curb profiling drum (100) to be replaced with another curb profiling drum (100) to change the profile of a curb resulting from a curbing operation using the curb former (10). ## Claims ### Claim 1 A curb former, comprising: a drive shaft; a drum mounted on said drive shaft; a first curb profiling drum detachably mounted relative to each of said drive shaft and said drum, wherein adjacent end portions of said drum and said first curb profiling drum are disposed in at least one of closely spaced or abutting relation; and a guide positioned on and detachably mounted to said drive shaft separately from said first curb profiling drum, wherein said first curb profiling drum is located between said drum and said guide along said drive shaft, and wherein said guide rotates with said drive shaft; wherein said guide is disposable at each of a plurality of different positions along said drive shaft to accommodate different spacings between said first curb profiling drum and said guide along said drive shaft and that produces a different width of an upper wall of a curb when formed by said first curb profiling drum, wherein said guide is detachably mountable to said drive shaft at each of said plurality of different positions. ### Claim 2 (depends on 1) The curb former of claim 1, wherein said drive shaft comprises a screed roller. ### Claim 3 (depends on 1) The curb former of claim 1, wherein said drum is fixedly attached to said drive shaft. ### Claim 4 (depends on 1) The curb former of claim 1, wherein said drum is welded to said drive shaft. ### Claim 5 (depends on 1) The curb former of claim 1, wherein said drum is a gutter drum. ### Claim 6 (depends on 1) The curb former of claim 1, further comprising a plurality of fasteners that secure said first curb profiling drum to said drum. ### Claim 7 (depends on 1) The curb former of claim 1, wherein said guide clamps onto said drive shaft. ### Claim 8 (depends on 1) The curb former of claim 1, wherein said guide comprises a sleeve, a first guide flange that extends radially outwardly relative to said sleeve, and a second guide flange that is spaced from said first guide flange and that also extends radially outwardly relative to said sleeve, and wherein said first guide flange is located between said second guide flange and said first curb profiling drum. ### Claim 9 (depends on 8) A curbing system comprising: the curb former of claim 8; a lower form; an upper form spaced from said lower form, that extends to a higher elevation than said lower form, and that comprises inboard and outboard surfaces with said inboard surface projecting in a direction of said lower form; and wet concrete between said lower form and said upper form; wherein said drum is positioned on an upper surface of said lower form, one of said first curb profiling drum and said drive shaft is positioned on an upper surface of said upper form, and said first guide flange engages said outboard surface of said upper form. ### Claim 10 (depends on 8) A curbing system comprising: the curb former of claim 8; a lower form; an upper form that is spaced from said lower form and that extends to a higher elevation than said lower form; and wet concrete between said lower form and said upper form; wherein said drum is positioned on an upper surface of said lower form, said sleeve is positioned on an upper surface of said upper form, and an upper section of said upper form is positioned between said first and second guide flanges. ### Claim 11 (depends on 10) The curbing system of claim 10, wherein a maximum spacing between said lower form and said upper form is 36″. ### Claim 12 (depends on 10) The curbing system of claim 10, wherein said drum defines a gutter and said first curb profiling drum defines a curb that is integral with said gutter. ### Claim 13 (depends on 1) The curb former of claim 1, wherein said drum comprises first and second drum ends that are spaced from one another along said drive shaft, wherein a first drive shaft section extends beyond said first drum end in a direction that is away from said second drum end, wherein a second drive shaft section extends beyond said second drum end in a direction that is away from said first drum end, wherein a length of said first drive shaft section and a length of said second drive shaft section each accommodate installation of both said first curb profiling drum and said guide thereon, and wherein said first curb profiling drum and said guide are positioned on a common one of said first drive shaft section and said second drive shaft section. ### Claim 14 (depends on 13) The curb former of claim 13, wherein said first drive shaft section comprises a first drive input and wherein said second drive shaft section comprises a second drive input. ### Claim 15 (depends on 14) The curb former of claim 14, wherein said first drive input is on a first free end of said first drive shaft section and said second drive input is on a second free end of said second drive shaft section. ### Claim 16 (depends on 14) The curb former of claim 14, further comprising a drive assembly, a first drive configuration, and a second drive configuration, wherein said first drive configuration comprises said drive assembly interfacing with said first drive input of said first drive shaft section, and wherein said second drive configuration comprises said drive assembly interfacing with said second drive input of said second drive shaft section. ### Claim 17 (depends on 1) The curb former of claim 1, wherein said drum comprises first and second drum ends that are spaced from one another along said drive shaft, wherein a first drive shaft section extends beyond said first drum end in a direction that is away from said second drum end, wherein a second drive shaft section extends beyond said second drum end in a direction that is away from said first drum end, and wherein said first curb profiling drum is positioned on said first drive shaft section. ### Claim 18 (depends on 17) The curb former of claim 17, wherein said first drive shaft section comprises a first drive input and wherein said second drive shaft section comprises a second drive input. ### Claim 19 (depends on 18) The curb former of claim 18, wherein said first drive input is on a first free end of said first drive shaft section and said second drive input is on a second free end of said second drive shaft section. ### Claim 20 (depends on 18) The curb former of claim 18, further comprising a drive assembly, a first drive configuration, and a second drive configuration, wherein said first drive configuration comprises said drive assembly interfacing with said first drive input of said first drive shaft section, and wherein said second drive configuration comprises said drive assembly interfacing with said second drive input of said second drive shaft section. ### Claim 21 (depends on 17) The curb former of claim 17, wherein said curb former comprises a second curb profiling drum positioned on said second drive shaft section and detachably mounted relative to each of said drive shaft and said drum. ### Claim 22 (depends on 1) The curb former of claim 1, wherein said drum comprises first and second drum ends that are spaced from one another along said drive shaft, wherein said drive shaft extends at least 2 feet beyond said first drum end in a direction that is away from said second drum end, and wherein said drive shaft extends at least 2 feet beyond said second drum end in a direction that is away from said first drum end. ### Claim 23 (depends on 1) The curb former of claim 1, wherein said drum and said first curb profiling drum each comprise a perimeter surface that contacts wet concrete when forming a curb with said curb former, and wherein said perimeter surface of said drum and said perimeter surface of said first curb profiling drum are each concentrically disposed relative to a rotational axis of said drive shaft. ### Claim 24 (depends on 1) The curb former of claim 1, wherein said guide comprises a sleeve and a first guide flange that extends radially outwardly relative to said sleeve, wherein said sleeve is disposed about said drive shaft. ### Claim 25 (depends on 1) A curb forming kit comprising the curb former of claim 1 and a plurality of said first curb profiling drums, wherein one said first curb profiling drum of said plurality of said first curb profiling drums has a different profile than another said first curb profiling drum of said plurality of said first curb profiling drums such that said one said first curb profiling drum will produce a first curb profile when said one said first curb profiling drum is detachably mounted relative to each of said drive shaft and said drum and such that said another said first curb profiling drum will produce a second curb profile when said another said first curb profiling drum is detachably mounted relative to each of said drive shaft and said drum, wherein said first curb profile is different from said second curb profile.