Transition collar

Details Transition collar Transition collar

1992-05-26

1994-01-25

Neuder, William P.

Road structure, process, or apparatus

Pavement

Vault cover-closure

52 20, E02D 2914

Patent

active

052810461

ABSTRACT:
A resilient annular transition collar is provided for roadway structures, including manholes and catch basins, which acts as a flexible transition between the rigid structure or frame of the manhole and the semi-rigid structure of the asphalt paving. The resilient transition collar absorbs any movement of the pavement during expansion and contraction and this absorption avoids the prior art problems of break-up, cracking and separation between manhole and pavement. Risers or adjusting rings may be employed in conjunction with the transition collar to ensure a flush fit between the pavement surface and the upper surface of the transition collar.

REFERENCES:
patent: 3263580 (1966-08-01), MacMillian
patent: 4759656 (1988-07-01), Wilson
patent: 4808025 (1989-02-01), McGinnis
patent: 4925336 (1990-05-01), Simmonds
patent: 4927290 (1990-05-01), Bowman
patent: 4969771 (1990-11-01), Bowman
patent: 5030030 (1991-07-01), Simmonds
patent: 5044818 (1991-09-01), Pritchard

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