Extendable walkway system for screed paving machines
First Claim
1. A walkway extension assembly for a paving machine with a main screed, laterally extendable and retractable screeds, and a rearwardly extending platform walkway, said extension assembly comprising:
- walkway means moveably positioned in relation to the rearwardly extending platform walkway and extendable laterally outward from the platform walkway;
track means secured to the platform walkway to allow slideable movement of the walkway means from a position beneath the platform walkway to a plurality of laterally extended positions; and
support means secured between the walkway means and the laterally extendable screeds to maintain the walkway means in position in relation to the platform walkway.
1 Assignment
0 Petitions
Accused Products
Abstract
A walkway extension assembly for a paving machine has main and laterally extendable and retractable screeds and a transversely extending rear catwalk or walkway. The assembly has a laterally extending walkway component extending beneath and on each side of the existing walkway. Channel members are attached to and extend downwardly from bottom surfaces of the existing walkway. The lateral walkway components are positioned beneath the existing walkway on these channel members, and are slideably extendable, laterally and outward from the existing walkway. Brackets are attached between the ends of the walkway components and the sidewalls of the lateral screeds. By this configuration, when the lateral screeds are extended from beneath the paving machine, the lateral walkway components, moving in tandem with the screeds, are also extended. Workers are thus able to stand on the walkway components, outboard of the paving machine itself, to observe the lateral paving operations.
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Citations
19 Claims
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1. A walkway extension assembly for a paving machine with a main screed, laterally extendable and retractable screeds, and a rearwardly extending platform walkway, said extension assembly comprising:
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walkway means moveably positioned in relation to the rearwardly extending platform walkway and extendable laterally outward from the platform walkway; track means secured to the platform walkway to allow slideable movement of the walkway means from a position beneath the platform walkway to a plurality of laterally extended positions; and support means secured between the walkway means and the laterally extendable screeds to maintain the walkway means in position in relation to the platform walkway. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A paving machine comprising:
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a main screed; laterally extendable and retractable screeds moveable in relation to the main screed; a rearwardly extending platform walkway; walkway means moveably positioned in relation to the rearwardly extending platform walkway and extending laterally outward from the platform walkway; track means secured to the platform walkway to allow slideable movement of the walkway means from a position beneath the platform walkway to a plurality of laterally extended positions; and support means secured between the laterally extendable screeds and the walkway means to maintain the walkway means in position in relation to the platform walkway. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A walkway extension kit for installation on a paving machine with a main screed, laterally extendable and retractable screeds, and a rearwardly extending platform walkway, said extension kit comprising:
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walkway means configured to be moveably positioned in relation to the rearwardly extending platform walkway and to be extendable, laterally outward from the platform walkway; a plurality of channel members configured to be secured to the platform walkway to allow slideable movement of the walkway means from a position beneath the platform walkway to a plurality of laterally extended positions; and a plurality of bracket members configured to be secured between the laterally extendable screeds and the ends of the walkway means to maintain the walkway means in position in relation to the platform walkway. - View Dependent Claims (16, 17, 18, 19)
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Specification