Road structure – process – or apparatus – Pavement – Vault cover-closure
Patent
1990-12-19
1995-10-31
Dorner, Kenneth J.
Road structure, process, or apparatus
Pavement
Vault cover-closure
254131, 4146843, E02D 2914, B66F 1100, B66F 300
Patent
active
054623855
ABSTRACT:
A hand-operated tool for removing and replacing a wide variety of different manhole covers is disclosed. The tool includes a handle which extends upward from slip-resistant feet. A collar with forward extending ears attaches to the lower, central region of the handle. An S-hook is positioned within the ears so that its hook extends downward and frontward, and a clevis is positioned outside the ears. The S-hook, clevis, and ears are all bolted together. One end of a chain attaches to the clevis, and another end of the chain attaches to a link of an elongated link-up unit. The link-up unit's link is dimensioned for snug, but hand-removable, attachment to the S-hook. The snug attachment resists rotation between the link-up unit and the S-hook. A hook pivotably couples to the link-up unit at an opposing end from the link-up unit's link. The hook is coupled so that is can pivot up and down only, and cannot freely rotate around the general direction of elongation of the link-up unit. The hook extends downward and forward. The link-up unit is further configured to include an integrally formed claw. This claw extends rearward and slightly upward from the lower region of the link-up unit.
REFERENCES:
patent: 2655399 (1953-10-01), McMillan
patent: 3362684 (1968-01-01), Davenport
patent: 4365786 (1982-12-01), Osteen
patent: 4488706 (1984-12-01), Kono
patent: 4512554 (1985-04-01), Racine
patent: 4662607 (1987-05-01), Mochizuki et al.
patent: 4978103 (1990-12-01), Moisan
patent: 4991893 (1991-02-01), Gordon et al.
Dorner Kenneth J.
GTE California Incorporated
Mulcare Nancy
Odozynski John A.
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