Abstract: A device for stabilized opening and closing of a sliding panel includes a gear-like driving roller made of synthetic resin and provided with a number of low profile teeth arranged with a fin and constant pitch. The driving roller is arranged on the inside of the device and a pinch roller is arranged on the outside of the device in juxtaposition with the driving roller. A rack-like plate made of synthetic resin and arranged horizontally all the way along on the inner side wall of a sliding panel is engaged with and driven by the driving roller. A biasing device arranged at least on one of the driving roller or the pinch roller biasing it toward the sliding panel.

Abstract: A telescoping cover for storage facilities, particularly vehicle cargo beds, which utilizes a plurality of cover sections in successive mutual telescopically receivable relation that slide on guideways in a self-cleaning manner. In the preferred embodiment, a plurality of movable cover sections are provided which are successively mutually telescopable into a stationary cover section through use of a pair of parallel guideways. Each cover has a top from which depend downwardly mutually opposing sides. The guideways, which are attached to the storage facility side walls, are made of an elongated base having a substantially flat surface from which extend a plurality of elongated bosses. The bosses have an upper portion which is disposed in offset relation to a lower portion which in turn mates with the elongated base. The movable cover sections have a slot in the lower terminus of each side receiving a boss.

Abstract: A laterally sliding pocket door is disclosed for use in curved walled enclosures such as airplanes, submarines, space shuttles, railroad cars, buses and the like, having a laterally extending divider comprising first and second hollow walls positioned on opposite sides with an open doorway tapered to be substantially wider at the top than at the bottom, and a pair of sliding door member assemblies, each positioned in one of the hollow walls, movable between a closed position meeting each other in said doorway and an open position retracted into the hollow walls. Each hollow wall has a curving guide track for pivotal movement of its sliding door assembly.

Abstract: A domestic security closure in a form of a cabinet having a front opening (9) defined at the top of a framework (2) partially embedded in the floor and providing a guide for a pair of rigid steel doors (10,12) which can be lifted by use of a counter-weighted chain drive system (20,21,24,25) from a retracted position below floor level (8) to a raised position in which they are locked in place securely to close the cabinet, for instance using a mortise deadlock (29) and a locking bar (27). The flush floor enables entry of relatively bulky and valuable items without lifting.

Abstract: A collapsible camper top for pick-up trucks which is characterized by multiple nesting and telescoping sections which are sealed by bottom and top reverse curved, rubber seal members and are adapted to extend and cove the bed of a pick-up truck. The number of nesting sections which are used is dictated by the length of the pick-up truck bed and the sections are nested and retracted in accordion-like fashion inside a fixed section to expose the bed of the pick-up truck for hauling purposes. In a preferred embodiment the nesting sections are mounted on rollers which operate in plate slots provided in roller plates carried by the side rails of the pick-up truck. In another preferred embodiment the nesting sections are extended and retracted by means of a chain drive system which is operated by an electric motor or is capable of hand-operation by a crank.

Abstract: An improved sliding cover assembly for converting the open body of a truck, or the like, to a closed body. The assembly comprises an articulated-type cover slidably mounted in a pair of parallel tracks of C-shaped cross-section, each of the said tracks having a lengthwise coextensive channel communicating with the interior space of the open body. The cover includes a plurality of rectangular panels successively disposed adjacent to one another and extending across said open body. Each panel includes a first semi-cylindrical edge portion and a second, semi-cylindrical edge portion having a radius larger than the radius of the first edge portion, said first edge portion being concentric with, and rotatably received by, said second edge portion of the adjacent panel, the successive panels preferably being alternately wide and narrow, whereby the cover may be wound into a space-saving rolled configuration for storage when the cover is slid to its open position.

Abstract: An expandable door features vertically telescoping door sections, having flexible wire guides to insure engagement of the door sections during raising and lowering operations, with a minimum of physical contact and force exerted between adjacent sections. The wire guides are uniquely shaped to assure engagement of the door sections, even when said sections become misaligned; this unique shape also allows ease of constructions and repair. The door sections may be either generally U-shaped or L-shaped, and nest one within the other when the door is opened.

Abstract: A structure comprising a plurality of partition members in sheet form each providing a pair of spaced opposite partition faces connected at one side and non-connected at the other side. These partition members are grouped into a telescoped assembly by guiding each of them into the internal space of another when not in use. When in use, the partition members are successively drawn from the telescoped assembly to provide continuous partition faces of a partition between two compartments of a room, sliding door or a window shutter.

Abstract: Closure of the opening for a fireplace or the like is effected by a plurality of plates or panels which are stored in stacked relation in a housing above the fireplace opening when not in use. The housing includes a biasing arrangement for maintaining pressure against the top of the panel stack so as to urge the panels towards a downwardly opening slot in the rear of the housing. A pair of channel members communicate with the housing slot and are affixed on either side of the opening. The bottom panel of the stack includes an externally accessible handle or the like for sliding this panel into the channels. A series of edge hooks cooperate to serially withdraw the panels from the housing and likewise cooperate to urge the panels serially back into the housing.

Abstract: A protective cover system for use in connection with guiding paths of machine tools including a plurality of overlapping cover plates telescopically moved into and out of each other while each cover plate at its front end face rests on the guiding path and at the rear end rests on the next segmental cover plate. Between the individual cover plates there are arranged energy storing means the return force of which is zero in the intermediate position of said energy storing means whereas the return force of said energy storing means is at its maximum in the fully pulled-out or pushed-in position of said cover plates. Each energy storing means includes a cylinder with an inserted elastic body and a piston. Between the cylinders and the piston at least one cam segment is provided. Relative movement between the cylinder and the pertaining cam segment is brought about by fork-shaped rods linked with the arms of said fork-shaped rods to the front end faces of the cover plates.

Abstract: For use in connection with a machine tool or the like a covering device comprising a plurality of telescopically interengaging cover boxes movable relative to each other and provided with a sealing lip forming part of a profile of elastic material. This profile comprises a head end which includes the sealing lip and is bevelled on its outside and also includes an anchoring web which engages a gap defined by the respective adjacent cover box and a respective adjacent carrier part. The lower surface of the carrier part forms the supporting surface for the respective cover box for conveying the weight of the latter onto the surface of the respective cover box therebelow. The anchoring web inserted into the gap has associated therewith teeth engaging corresponding teeth provided in the carrier part.

Abstract: A door closure useful as such, but particularly as an air curtain device and process in which laterally spaced-apart parallel sliding sections of a closure formed of separable or pivotally connected vertically mounted panels form a flexible air duct between inner and outer sections connected to a nozzle supported at a bottom outlet between the sections to provide an air screen of homogeneity and resistance to lateral air currents in various open, partially open and closed door positions, by air passed into the top between the sections, from a plenum passing air received from a fixed blower mounted above or near the top of the door within a space enclosed by the walls of the opening.