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US3992124A Expired / Lapsed US ⏱️ 0.0 years remaining

Device for the adjustment of the working width of road finishers

Assignee: Individual
•
Filing: 1975-09-30
•
Granted: 1976-11-16
•
Expires: 1995-09-30
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Abstract

Abstract A device for adjusting the working width of a road finisher, comprises a main support beam which is adapted to be carried by the road finisher behind the device for finishing the road surface. The main support beam includes a central plate portion having a pair of tubes secured to each side thereof which extend laterally of the road finisher. An adjustment beam for carrying a ground support for the finisher includes a rod portion extending into each tube and a respective interior and exterior side wall at the respective ends of the adjustment beam. The rod portions are movable in each tube and they are secured on the portion extending exteriorly of the tube to the exterior side wall. The rods are guided within the tube by guide means which bear between the rod and the tube. In addition, the exterior of the adjustment member is guided by second guide means which support the adjustment beam on the exterior of the tubes. These second guide means include sleeves bearing against the tubes containing the rods and carried by an interior guide wall of the adjustment beam. The rods include pistons at their inner ends and fluid pressure is admitted to respective opposite sides of the pistons in order to extend or retract the adjustment beam in accordance with the road width desired.

Inventors

  • 👤 Ernst-August Schrader

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 02:48
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/48; E01C19/4833; E01C2301/00; E01C2301/14; E01C2301/16

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 149 words
A device for adjusting the working width of a road finisher, comprising a main support beam adapted to be carried on the road finisher and having a central plate portion, a pair of tubes secured to each side of said main support beam central plate portion and extending laterally of the road finisher, an adjustment beam on each side of said central plate portion of said main beam having a respective interior and exterior side wall at respective ends thereof, a supporting rod having an inner end portion movable in each tube and an outer end portion secured exteriorly of the associated tube to said exterior side wall of said adjustment beam, first guide means supportably guiding the inner end portion of said supporting rod in a respective one of said tubes, and second guide means supportably guiding said adjustment beam on the exterior of each of said tubes.
Claim 2
Independent Claim 149 words
A device for adjusting the working width of a road finisher, comprising a main support beam adapted to be carried on the road finisher and having a central plate portion, a pair of tubes secured to each side of said main support beam central plate portion and extending laterally of the road finisher, an adjustment beam on each side of said central plate portion of said main beam having a respective interior and exterior side wall at respective ends thereof, a supporting rod having an inner end portion movable in each tube and an outer end portion secured exteriorly of the associated tube to said exterior side wall of said adjustment beam, first guide means supportably guiding the inner end portion of said supporting rod in a respective one of said tubes, and second guide means supportably guiding said adjustment beam on the exterior of each of said tubes.
Claim 3
Dependent Claim 33 words
A device according to claim 1, wherein said main support beam includes a side wall spaced outwardly from said central plate portion and firmly secured around the exterior of each of said tubes.
Claim 4
Dependent Claim 71 words
A device according to claim 1, wherein at least one of said tubes comprises a fluid pressure cylinder, said rod in said fluid pressure cylinder having a piston portion which is slidably guided within said tube, said cylinder having means for directing fluid pressure into said cylinder at respective sides of said piston in order to move said piston with the associated adjustment beam inwardly and outwardly of said road finisher.
Claim 5
Dependent Claim 74 words
A device according to claim 1, wherein at least one tube on each side of said central plate portion of said main support beam comprises a fluid pressure cylinder, said rod in the associated fluid pressure cylinder having a piston thereon and means for supplying a fluid pressure to respective sides of said piston for shifting said piston in respect to the associated cylinder and for moving said adjustment beam selectively inwardly or outwardly.
Claim 6
Dependent Claim 34 words
A device according to claim 4, wherein said first guide means comprises a slide ring around at least one of said supporting rods bearing against the interior of the associated one of said tubes.
Claim 7
Dependent Claim 41 words
A device according to claim 5, wherein at least one of said first guide means comprises a piston carried at the inner end of the associated said support rod and being in slidable engagement with the interior wall of said tube.

References Cited (Backward Citations)

US3557672A Cited
US3572227A Cited
US3907451A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-11-16 1980-05-17 1980-11-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-11-16 1984-05-17 1984-11-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-11-16 1988-05-17 1988-11-16 $7700.00 Window Closed / Lapsed

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