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| Number | Title | Issue Date |
| 4944169 | Closure lock A closure lock for a folding door having top and bottom locking bars in the tubular post at the leading end of the door. The locking bars are normally biased to an unlocked position within the door. The bars can be manually moved to project from the ends ... | 07/31/1990 |
| 4664170 | Rolling firedoor A rolling firedoor having a closure drum on which a closure is wound, and a chaindrive for rotating the drum to raise or lower the closure. The chaindrive is disconnected from the drum during a fire. Means are provided for reconnecting the chaindrive to t... | 05/12/1987 |
| 4633927 | Barrel rings A barrel ring for use in rolling closures comprising at least two ring sections. One of the ring sections defines a part-circular outer surface. Another of the ring sections defines a part-spiral outer surface. The ring sections are joined together end-to... | 01/06/1987 |
| 4628982 | Insulated closure panel An insulated closure panel for a rolling closure. The panel has a metallic section with an outer wall and side walls, and a thermoplastic section with an inner wall. Both panel sections have male and female hinge sections on their sides. The thermoplastic... | 12/16/1986 |
| 4586552 | Rolling closure guide means Rolling closure guide means. The guide means comprise two vertical guide members for use in guiding the edges of a rolling closure during opening or closing operations. Two guide strips are mounted on each guide member for guiding the edge of the closure ... | 05/06/1986 |
| 4571889 | Rolling closure bottom seal Sealing means for the bottom of a rolling closure which sealing means can be adjustably mounted on the closure. The adjustable mounting provides a seal of substantially uniform size irregardless of which one of several panel thicknesses make up the closur... | 02/25/1986 |
| 4497357 | Sectional folding closure A folding closure assembly for closing an opening. The assembly includes a track installed along the top of the opening, and a folding closure unit made up of a plurality of folding closure sections. Each closure section comprises a plurality of closure p... | 02/05/1985 |
| 4475268 | Closure hinge improvements This invention is directed toward improvements in closure hinges of the type employing curved hinge sections which rotatably interconnect. A rigid link is employed at the ends of the hinge to help retain the hinge sections interconnected. Existing hinge e... | 10/09/1984 |
| 4434525 | Hinge having open curved portions A hinge having first and second elongated hinge members. The two hinge members rotate one within the other between open and closed positions. The hinge members are constructed to avoid any longitudinal gaps between the hinge members in either the open or ... | 03/06/1984 |
