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US 5,484,007 AGranted
Vertical lift gate with strip cladding in guideways
OwnerGabrijel Rejcinventor
Life of this patent
Estimating the term…
Abstract
A lifting door includes a plurality of slats pivotally connected one to the other for pivotal movement about horizontal axes. Each slat carries at opposite ends a guide. Guide tracks are disposed in a door aperture for guiding the door during opening and closing. The guide tracks above the door aperture extend in a generally inwardly directed spiral configuration whereby, upon opening the door, the slats are guided about the spirally configured guide tracks into an open position without engaging one another.
Claims9
A lifting door for a door aperture comprising:
- a door body for opening and closing the door aperture and including a plurality of substantially rigid slats pivotally coupled to one another and carrying guides at opposite sides thereof;
- guide tracks extending substantially vertically along opposite sides of the door aperture for substantially the full height of the door aperture and curved above the door aperture into an inwardly directed, generally spiral configuration, said guides lying in engagement with said guide tracks such that, when the door body is moved to an open position, the guides follow the curvature of said guide tracks to locate the slats between the spirally configured guide tracks and without contact with one another;
- each said guide track comprising a pair of guide bars and said guides comprising rollers engaging said bars.
A lifting door for a door aperture comprising:
- a door body for opening and closing the door aperture and including a plurality of substantially rigid slats pivotally coupled to one another and carrying guides at opposite sides thereof;
- guide tracks extending substantially vertically along opposite sides of the door aperture for substantially the full height of the door aperture and curved above the door aperture into an inwardly directed, generally spiral configuration, said guides lying in engagement with said guide tracks such that, when the door body is moved to an open position, the guides follow the curvature of said guide tracks to locate the slats between the spirally configured guide tracks and without contact with one another;
- and
- a drive for lifting the door body and including a driven shaft coupled to said drive and a weight compensation system for adapting the lift of the door body by said drive substantially to the weight of the door body;
- said system including a compensating spring and a band connecting to said compensating spring and said driven shaft for winding thereabout.
2 more elements
Dependencies are inferred from the claim text.