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US 11,993,897 B2Granted
Curb former
AssigneeLura Enterprises, Inc.
InventorDennis K. Lura
Life of this patent
Estimating the term…
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).
Claims21
A curb former, comprising:
- a drive shaft;
- a drum mounted on said drive shaft and comprising 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, and wherein a second drive shaft section extends beyond said second drum end in a direction that is away from said first drum end;
- a first curb profiling drum positioned on said first drive shaft section and disposed in one of closely spaced or abutting relation to said first drum end;
- a second curb profiling drum positioned on said second drive shaft section and disposed in one of closely spaced or abutting relation to said second drum end;
- 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.
4 more elements
A rotary screed, comprising:
- a drive shaft;
- a drum assembly mounted on said drive shaft and comprising first and second drum ends that are spaced along said drive shaft by a distance of at least 5 feet, wherein said drum assembly comprises:
- a first curb forming section comprising a first curb profiling surface;
- and
- a lane forming section comprising a lane profiling surface, wherein said lane forming section extends from said first curb forming section toward said second drum end, and wherein said lane profiling surface is cylindrical;
- a guide positioned on and detachably mounted to said drive shaft separately from said first curb forming section, wherein said first curb forming section is located between said drum assembly 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 forming section 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 forming section, wherein said guide is detachably mountable to said drive shaft at each of said plurality of different positions.
4 more elements
Dependencies are inferred from the claim text.