Lift & Lock
Manhole Covers


Reduce worker injuries by employing my improved design -
Based on over 30 years of experience in Sanitary Engineering

LIFT & LOCK reduces injuries to fingers, back, feet, and toes

LIFT & LOCK prevents unauthorized entry

Machining existing covers to include the LIFT & LOCKdesign costs less than half as much as other alternatives. In addition, LIFT & LOCK makes manhole cover removal and replacement a relatively easy and fast one-person job (see demonstration videos). Lifting heavy manhole covers is the major source of injury in the sewer maintenance industry. In 1996-1997, the cost of one permanent partial disability varied from $25,000 to $115,000, depending on the state. In Michigan, the figure was over $91,000. Since then, the costs have risen significantly. Learn more about how to improve your manhole cover safety and security




Some Other Helpful References on this Site:
Wastewater Treatment Articles - Prevent Basement Flooding
WANTED: A partner in the electronics field to develop, design, and produce a status monitor to be used in conjunction with Lift & Lock manholes.
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A. A. Schrage P.E., Inc.
A. A. Schrage, President,
Professional Sanitary Engineer
3368 Galaxy Blvd.
Sterling Heights, MI 48314
Phone: (586)323-0363
Email: aaschrage@sbcglobal.net