US 4,172,679 AGranted

Device for renewing road surfaces

OwnerReinhard Wirtgeninventor

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Abstract

The invention relates to a method for renewing road surfaces where in the course of one single operational step the road surface is milled away, heated and coated with new material and wherein according to a special embodiment of the invention the milling away or cutting away is performed to an amount not reaching the depth of the damages, at least part of the cut away material is distributed in the remaining recesses and is compressed, and subsequently the road surface is subjected to a heating and a subsequent aeration and is then uniformly coated with new material; and it relates also to a machine for performing the method, wherein, behind said cutting or milling device, a distribution device for distributing the milled off material in the remaining recesses of the road surface, a compression device for compressing the milled off material within the recesses, a heating device and optionally a scraper device provided for the aeration of the road surface, which are followed by a spreader device for applying the new coating to the road surface.

Claims6

Dependent claims

An apparatus for repairing asphaltic road pavements in a combined operation comprising an elongated chassis having at least three wheels, at least one of which is steerable and at least one of which is drivable so that said chassis is supported for movement longitudinally along such a pavement, a series of longitudinally spaced processing units carried by such chassis and including

means for heating the upper surface of such a pavement,
behind said means for heating, a means for milling the thus heated upper surface to cut away the same to a depth less than that of at least some of the damaged areas of such pavement,
behind said means for milling, a means for distributing at least some of such displaced material into the recesses of such damaged areas,
means for compressing such distributed material,
means at the rear end of said chassis for applying fresh asphaltic material to such heated exposed upper surface, and
a tub-like storage bin provided at the front end of said chassis for the storage of the new coating material, wherein said storage bin is provided with supporting wheels and is pivotally mounted for movement about a horizontal axis on said chassis so that it can be tilted.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 05/922,182Filed 5 Jul 1978 · continuation
Priority: DE 254229423 Sep 1975
Granted: 30 Oct 1979
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

E01C 23/08
Devices or arrangements for working the finished surface ; Devices for repairing or reconditioning the surface of damaged paving; Recycling in…:…
E01C 7/187
Of road-metal and bituminous binders: repairing bituminous covers, e.g. regeneration of the covering material in situ, application of a new…
E01C 19/182
Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect: solely for depositing
E01C 23/065
Devices or arrangements for working the finished surface ; Devices for repairing or reconditioning the surface of damaged paving; Recycling in…:…