The Pfaudler Companies, Inc.

Douglas H Rigerman

Franklyn J Amorese

Robert R Loomis

The invention relates to an improved balancing aid for a pivotally mounted cover for a manhole comprising means for hinging the cover relative to the manhole so the cover may be rotated about the hinge to expose and cover the manhole; and a spring retaining means comprising a rod pivotally secured to the cover, said rod being at least partially encased by a housing, said housing containing a compression spring means which is compressed when the cover is closed; wherein the improvement comprises securing the spring retaining means by attachment means which may be removed only after the spring means is first removed.

Growing community of inventors

Leroy, NY, United States of America

Douglas H Rigerman