Hatch cover manager

Details Hatch cover manager Hatch cover manager

2007-04-12

2009-12-29

Masih, Karen (Department: 2837)

Electricity: motive power systems

Automatic and/or with time-delay means

Time or with time-delay means

C318S443000, C318S444000

Reexamination Certificate

active

07638962

ABSTRACT:
The hatch cover manager product monitors hatch cover conditions and can move the cover to a closed position when the cover is left open and the hatch opening is not in use. The product minimizes the probability that the person using the walking surface will accidentally step into the uncovered hatch opening and fall to the surface below.

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patent: 2004/0124662 (2004-07-01), Cleland et al.
patent: 2004/0135531 (2004-07-01), Graham et al.
patent: 2006/0187034 (2006-08-01), Styers et al.

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