Manhole cover lifter

Details Manhole cover lifter Manhole cover lifter

1988-03-31

1989-05-02

Spar, Robert J.

Material or article handling

Vertically swinging load support

Door remover

254131, 280 46, 280 4724, B66F 1100

Patent

active

048263885

ABSTRACT:
The present invention provides a manhole cover lifter having a key to be located in the manhole keyhole and a lever arrangement to provide the mechanical advantage for lifting the manhole cover. The key may be directly attached to the lever, or indirectly attached thereto by a lifting bar.

REFERENCES:
patent: 2655399 (1953-10-01), McMillan
patent: 3827707 (1974-08-01), Bierman
patent: 4365925 (1982-12-01), Girtz
patent: 4488706 (1984-12-01), Kono
patent: 4653728 (1987-03-01), Mochizuki et al.

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