| Method of forming a multi-course paver for paving multi-course road surfaces, and multi-course paver -> Monitor Keywords |
|
|
  Method of forming a multi-course paver for paving multi-course road surfaces, and multi-course paverUSPTO Application #: 20080063475Title: Method of forming a multi-course paver for paving multi-course road surfaces, and multi-course paver Abstract: A method to form a multi-course paver from two independent pavers, namely a lower base paver (10) and an upper paver (11) saddled thereon using the piggyback principle. Both the base paver (10) and the upper paver (11) can be used as stand-alone pavers for producing single-layer road surfaces. Therefore, the invention does not require any costly add-on devices, which can be used only for multi-course paving, for paving the second course of the road surface. (end of abstract) Agent: Smith, Gambrell & Russell - Atlanta, GA, US Inventors: Ronald Utterodt, Hermann Schade USPTO Applicaton #: 20080063475 - Class: 404 82 (USPTO) The Patent Description & Claims data below is from USPTO Patent Application 20080063475. Brief Patent Description - Full Patent Description - Patent Application Claims
STATEMENT OF RELATED APPLICATIONS [0001]This patent application is based on and claims convention priority on German Patent Application No. 10 2006 042 846.3 having a filing date of 8 Sep. 2006 and German Patent Application No. 10 2006 047 332.9 having a filing date of 6 Oct. 2006, both of which are incorporated herein by this reference in their entireties. BACKGROUND OF THE INVENTION [0002]1. Technical Field [0003]The invention relates to a method of forming a multi-course paver for paving multi-course road surfaces, wherein a base paver for forming a road surface is provided, by way of conversion, with devices for forming a second road surface. Furthermore, the invention relates to a multi-course paver for paving a multi-course road surface, comprising a base paver and a device for producing a second course of the road surface. [0004]2. Related Art [0005]Road surfaces are conventionally formed from essentially three courses, namely a base course, a binder course and a wearing course. It has been found that a high-quality road surface can be obtained if the uppermost surface courses are paved in direct succession, so that the hot wearing course is applied to the still-hot binder course. The technical jargon term used in this connection is "hot-on-hot" laying. [0006]Special multi-course pavers are known for "hot-on-hot" laying. For instance, EP 1 058 752 B1 discloses a multi-course paver which is formed from a conventional paver for forming a single-course road surface and from an add-on device. This add-on device is designed to produce the second road surface, that is to say the wearing course. The add-on device is arranged on a framework which is to be connected releasably to the paver, and this framework can be pushed laterally onto the travelling gear of the paver and fastened thereto by means of fastening points. The add-on device can be used only together with the paver which carries it for simultaneously paving two courses of the road surface. If the paver is to be used for paving a single-course road surface, the add-on device must be removed. It cannot be used for other purposes. BRIEF SUMMARY OF THE INVENTION [0007]Taking the foregoing as a starting point, the object on which the invention is based is to provide a method for forming a multi-course paver and also to provide a multi-course paver, with use being made of stand-alone pavers which can also be used for the production of conventional single-course road surfaces. [0008]A method for achieving this object comprises a method of forming a multi-course paver for paving multi-course road surfaces, wherein a base paver for forming a road surface is provided, by way of conversion, with devices for forming a second road surface, characterized in that, for conversion purposes, an upper paver is arranged above the lower base paver. Accordingly, provision is made to arrange an upper paver above a lower base paver. Thus, for multi-course paving, use is made of two stand-alone pavers arranged one above the other on the piggyback principle. The base paver here serves as a carrier unit for the upper paver. If required, both the base paver and the upper paver can be used separately from one another to produce conventional single-course road surfaces. [0009]It is possible, for the purpose of converting into a multi-course paver, to arrange the entire upper paver above the base paver. The upper paver here is situated at a distance above the ground, with the result that its travelling gear is not supported on the ground, and consequently only the travelling gear of the base paver serves as travelling gear for the entire multi-course paver. The travelling gear of the upper paver thus hangs in the air as it were, and so all the pavers together are carried by the travelling gear of the lower base paver. However, provision is preferably made to arrange the upper paver without its travelling gear on the lower base paver. For this purpose, the travelling gear is uncoupled from the upper paver before the said paver is placed on the lower base paver. This reduces the weight of the entire multi-course paver. The travelling gear of the base paver then need only carry the upper paver without its travelling gear. As an alternative, or additionally, the paving or compacting screed and/or distributing auger are removed from the upper paver before the upper paver is placed on the lower base paver. [0010]Provision may be made to place the upper paver on the base paver so that the base paver, in particular its travelling gear, carries the upper paver. The travelling gear of the upper paver here does not serve to advance the multi-course paver, this task being performed solely by the travelling gear of the base paver. [0011]According to a preferred development of the method, provision is made, however, to assign a carrier device for the upper paver to the base paver, preferably in a releasable manner. The carrier device can perform a number of jobs. It preferably serves to provide simple coupling between the upper paver and the lower base paver. However, as an alternative, or additionally, the carrier device also serves to suspend the paving screed and/or distributing auger removed from the upper paver. [0012]The carrier device can be completely supported on the base paver such that this base paver carries both the carrier device and the upper paver. However, it is also conceivable for the carrier device to be supported wholly or at least in part on the ground. In that case at least part of the carrier device and the upper paver arranged thereon rest on the ground. The carrier device then assumes, at least in part, the function of the travelling gear of the upper paver, which can consequently be removed therefrom or is unloaded if, for multi-course paving, the upper paver is arranged above or on the lower base paver. [0013]A multi-course paver for achieving the aforementioned object is a multi-course paver for paving a multi-course road surface, comprising a base paver and a device for producing a second course of the road surface, characterized in that an upper paver is arranged above the base paver to form the device for producing the second road surface. Provision is made here to arrange above the base paver an upper paver which serves to form the second road surface on the lower, first road surface produced by the base paver. Accordingly, according to the invention, two stand-alone pavers are arranged one above the other on the piggyback principle. Here, the lower base paver carries the upper paver, the travelling gear of which thus remains unused and unloaded and may, if appropriate, also be disassembled prior to placing the said upper paver on the lower base paver. [0014]A multi-course paver is conceivable in which the upper paver is placed directly on the lower paver, for which purpose coupling means on the base paver and/or on the upper paver provide the connection between the two pavers and carry the upper paver, which hangs in the air as it were, on the base paver. [0015]However, provision is preferably made to arrange at least one carrier device between the base paver and the upper paver. The carrier device comprises one or more means to retain the upper paver above the lower base paver. The carrier device can be supported completely on the base paver; however, it can also be supported wholly or in part on the ground by way of its own travelling gear, preferably a number of tyres, together with the travelling gear of the base paver. In this case, the carrier device need only be suspended on the lower base paver, with the result that essentially only the pushing or pulling force of the travelling gear of the base paver is transmitted to the carrier device, that is to say that the base paver only pulls or pushes the carrier device with the upper paver arranged thereon. In that case the travelling gear of the carrier device does not need to have its own drive, although, in an alternative embodiment of the invention, it would also be conceivable for the travelling gear of the carrier device to have its own drive. [0016]The carrier device needs to have travelling gear preferably consisting of one or more wheels at one end only, while the other end of the carrier device rests on the base paver. The carrier device with the upper paver is then, as it were, saddled on the base paver. It is also conceivable for the carrier device with the upper paver to be supported, at least in part, on the paving screed for the upper paver, this paving screed being suspended on the carrier device, or on both paving screeds for the upper paver and the base paver. However, the carrier device with the upper paver assigned thereto can also be supported wholly on its own travelling gear, which is preferably also undriven in that case. [0017]Furthermore, provision is made to design the travelling gear of the carrier device such that it is height-adjustable. This makes it possible to modify the weight loading on the base paver by the carrier device, and especially by the upper paver arranged thereon, to suit the requirements, even as the road surfaces are being paved. The height-adjustability of the travelling gear of the carrier device can also serve, during the paving operation, to modify the force of weight exerted by the at least one paving screed on the freshly paved road surface, in other words to adapt it to the requirements. [0018]The carrier device can be provided with at least one storage container for one type of road-building material. This storage container can serve as an additional storage container for the storage container of the base paver, but also replace the storage container of the upper paver or of the base paver. As an alternative it is conceivable for the carrier device to be assigned a conveyor for filling a storage container of the upper paver. In that case the carrier device does not need to have a storage container. [0019]In a preferred development of the multi-course paver, at least one means is assigned for transferring road-building material from the upper paver to the distributing auger for the road-building material of the surface course, in particular wearing course, to be produced by the upper paver. The means assigned to the carrier device thus bridges the increased distance between the paver and the distributing auger assigned thereto that results from the arrangement of the paver above the base paver. [0020]The carrier device is preferably also assigned a compacting screed or paving screed of the upper paver. The carrier device hence carries those components of the upper paver which, owing to its arrangement on the base paver, can no longer be arranged on the paver and which, for the purpose of converting the two stand-alone pavers into the multi-course paver, have been removed from the upper paver for multi-course paving. [0021]Finally, provision is made to design the carrier device as a preferably three-dimensional carrier frame. This carrier frame can engage both above and around the base paver and thus accommodate the upper paver, if appropriate together with the travelling gear and/or storage container remaining thereon, which means that only the paving screed and, if appropriate, the distributing auger have to be changed over from the upper paver to the carrier frame to achieve a piggyback arrangement of the upper paver on the base paver. Continue reading... Full patent description for Method of forming a multi-course paver for paving multi-course road surfaces, and multi-course paver Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Method of forming a multi-course paver for paving multi-course road surfaces, and multi-course paver patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Method of forming a multi-course paver for paving multi-course road surfaces, and multi-course paver or other areas of interest. ### Previous Patent Application: Method of operating a compactor machine via path planning based on compaction state data and mapping information Next Patent Application: Swing-out manhole cover Industry Class: Road structure, process, or apparatus ### FreshPatents.com Support Thank you for viewing the Method of forming a multi-course paver for paving multi-course road surfaces, and multi-course paver patent info. IP-related news and info Results in 0.23596 seconds Other interesting Feshpatents.com categories: Novartis , Pfizer , Philips , Polaroid , Procter & Gamble , |
||
