Manhole cover lifting hook

Details Manhole cover lifting hook Manhole cover lifting hook

1984-06-13

1984-12-18

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Single throw lever

Special engaging feature

B66F 300

Patent

active

044887060

ABSTRACT:
A hook for a manhole cover having a hook hole, comprises a lever rod having a load end, at least one roller rotatably mounted on the lever rod and rollingly movable at least in a back-and-forth direction, and a hook mounted on the load end for engaging in the hook hole in the manhole cover. The hook enables the worker to open and close a heavy manhole cover quite easily with a reduced expenditure of physical energy.

REFERENCES:
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patent: 3198362 (1965-08-01), Berg
patent: 3275299 (1966-09-01), Meshew
patent: 3985338 (1976-10-01), Herrmann
patent: 4039178 (1977-08-01), Odames
patent: 4070011 (1978-01-01), Glesser
patent: 4126297 (1978-11-01), Barnes
patent: 4365925 (1982-12-01), Girtz

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