|
US3142333A
|
|
Coiling shutter
|
|
US3119636A
|
|
Retractable toggle clamp
|
|
US3090342A
|
|
Multi-section lift-lock devices for closing open-top spaces such as shipholds, sheds, vehicles, etc., by means of panels movable on runways
|
|
US3092065A
|
|
Multi-section closing or lift-lock devices having retractable bearing members
|
|
US3090429A
|
|
Flap cover devices for closing open spaces such as shiphold hatchways, railway cars, and the like
|
|
US3163883A
|
|
Hinge means for interconnecting hatch cover sections and the like
|
|
US3190637A
|
|
Control device for doors or panels, notably for closing open spaces and the like
|
|
US3093851A
|
|
Device for loading and unloading ships, and similar applications
|
|
US2932272A
|
|
Hatch cover and means for mounting the same
|
|
US2979012A
|
|
Method of and device for controlling the closing panels of shipholds, railway cars and the like
|
|
US2965063A
|
|
Device for actuating hatch-covers and the like
|
|
US2869859A
|
|
Device for controlling hatch-covers and like panels on ships, railway-cars and the like with the assistance of an endless, driven chain
|
|
US2844118A
|
|
Water tight hatch cover arrangement
|
|
US2865319A
|
|
Hatch-covers arrangements
|
