Road structure – process – or apparatus – Pavement – Vault cover-closure
Patent
1995-08-30
1998-02-03
Lisehora, James
Road structure, process, or apparatus
Pavement
Vault cover-closure
52 19, E02D 2914
Patent
active
057136955
ABSTRACT:
The present invention is a device providing a safe and convenient attachment point for connecting a lifting apparatus to a trench or cover plate. The invention consists of an insert for location in the plate, the insert having at least two secured pins extending across an aperture centered in the insert. A single length of chain is secured at each end to the portions of the pins spanning the aperture. The chain is of such length and size to fit within the aperture without extending outward from the upper and lower surfaces of the insert. The insert is positioned in an existing cover plate of similar thickness or incorporated into the manufacture of new cover plates. A lifting mechanism is attached to the chain for safe and quick lifting of the cover plate.
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