Apparatus for operating manhole cover

Details Apparatus for operating manhole cover Apparatus for operating manhole cover

1985-12-06

1987-05-05

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Single throw lever

Special engaging feature

B66F 1100

Patent

active

046626077

ABSTRACT:
An apparatus for operating a manhole cover is disclosed which is capable of being applied to an operating hole of any type and accomplishing not only the separation of an edge of a manhole cover from a manhole but the lifting and movement of the manhole cover from the manhole. The apparatus includes a lever-like body and a hanging hook mechanism pivotally connected to a pivot point defined on the point of application side of the lever-like body. The hanging hook mechanism comprises a rod-like insertion member which is adapted to be inserted in an operating hole of a manhole cover and has a projection provided on a lower end thereof to be directed toward the pivot point and adapted to be firmly engaged with an operating hole. The pivot point is eccentric to the longitudinal direction of the insertion member. Also, a point of support on the lever-like body is defined at each of two positions on the lever-like body between a point of application and a point of force.

REFERENCES:
patent: 4126297 (1978-11-01), Barnes
patent: 4250769 (1981-02-01), Herring
patent: 4365925 (1982-12-01), Girtz

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