Adjustable fastening band for a manhole chimney seal and method

Details Adjustable fastening band for a manhole chimney seal and method Adjustable fastening band for a manhole chimney seal and method

1995-01-09

1996-03-05

Britts, Ramon S.

Road structure, process, or apparatus

Pavement

Vault cover-closure

404 26, 52 19, 52 20, 277109, E02D 2914

Patent

active

054961289

ABSTRACT:
An internal fastening band for an internal manhold chimney seal is disclosed, as well as a means for expanding the band and a means for removing the band. One end of the band is narrower than the other end so that when overlapped the ends of the band nest into one another to form a continuous expansion band. The first end portion has a plurality of apertures longitudinally spaced along the fastening band, and a plurality of slots spaced between the apertures and an end of the fastening band. The second end portion also has a aperture along a tab for engaging one of the slots to connect the first end portion to the second end portion with the particular slot being selected to adjust the continuous circular fastening band to a desired diameter. A tool is described for engaging an aperture in each end portion to increase the diameter of the circular expansion band and force the resilient sleeve against the inside surface of the manhole. An attachment for this tool to provide for the removal of this band is also disclosed.

REFERENCES:
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patent: 4469467 (1984-09-01), Odill et al.
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patent: 5029907 (1991-07-01), Gundy
patent: 5054794 (1991-10-01), Westhoff et al.
patent: 5150927 (1992-09-01), Skinner
patent: 5209601 (1993-05-01), Odill et al.
patent: 5431459 (1995-07-01), Gundy

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