|국가/구분||United States(US) Patent 등록|
|발명자 / 주소|
|인용정보||피인용 횟수 : 12 인용 특허 : 5|
An adjustable manhole cover apparatus designed to fill a gap of any size or shape between a manhole and a resurfaced road pavement. The preferred embodiment provides a plastic bag filled with cement or heavy foam to fill the gap and an aluminum lid. The plastic bag prevents the filling from sticking to the pavement and manhole, while being heavy enough to support vehicles passing over the filling. Accordion-shaped versions provide accordion-shaped forms, with one incorporating a manhole cover, to be filled to eliminate the gap between a manhole cover and...
What is claimed is: 1. An adjustable manhole cover apparatus comprising: a disk-shaped lid comprising: a flat top side, an aperture in said top side; a downwardly turned lip edge continuously affixed to the circumference of said top side, a plastic bag having an open end, the open end being continuously and sealingly affixed to the lip edge of the lid by a sealing layer; an amount of fill material to fill said plastic bag; a container having a mouth from which said fill material can be poured into said aperture and into said plastic bag. 2. The adju...