Apparatus is provided for supporting a retractable roof. The support includes a support frame which supports the roof sections, and a follower wheel which moves along a rail formed in the retraction and expansion direction of the roof sections. The support frame has a base support having a spherical surface. Also included is a base capable of tolerating movement within a given range in the horizontal direction, substantially perpendicular to the rail and supported by the base support via a movem...

A spa cover lifter for use with a spa cover. According to various embodiments, the spa cover comprises a first section and a second section pivotably connected to the first section at a hinge interface. The spa cover lifter comprises a drive system, a first cable connected to the drive system, and a post assembly. The post assembly is extendable from a retracted position to an extended position. Also, the first cable is routed by the post assembly. In various embodiments, the spa cover lifter is...

A projectile having at least one incendiary charge adapted to ignite on impact and burn through to a bursting charge rearwardly thereof includes an elongated opening in the incendiary charge for increasing the intensity of burning thereof.

A retractable roof panel for selectively permitting light and air to enter through an opening in the roof. The retractable roof panel includes a pair of opposed side rails that are coupled to an upper surface of the roof structure and extend along the side edges adjacent the opening of the roof structure. A panel member has a pair of opposed panel sides, an upper end and a lower end and is slidably disposed between the side rails. The panel member is positionable between a closed position and an...

A lift-assisted entrance to provide ground-level access to an external basement entryway to a building. The lift-assisted entrance has a pivotable roof vertical, rectangular side walls, and a front face with vertically oriented, outward opening double doors, all fabricated from lightweight visco-elastic material. The roof section opens upward and tilts away from the plane of the front face and is supported by two actuators. Doors located on the front face open outward to provide full access to t...

A new and improved see-through bus stop shelter includes a rigid, opaque framework that defines an interior space which includes a first interior room and a second interior room. The framework also defines a first threshold between the space exterior to the framework and the first interior room. The framework also defines a second threshold between the first interior room and the second interior room. Transparent wall elements are connected to the framework. The transparent wall elements provide...

An openable roof includes a plurality of movable roof members. Each of the movable roof members is of a generally sectorial shape in two-dimensional projection. The sectorial shape has a radially outer edge portion and a radially inner edge portion. The outer edge portion of the movable roof member is movably disposed on an outer arcuate support. The inner edge portion of the movable roof member is movably disposed on an inner arcuate support. The outer and inner arcuate supports are disposed co...

An arrangement of tensile elements and rollers provides support for an extensible part against forces occurring in two directions perpendicular to the extension direction in which the extensible part is carried by a carrying part of conforming geometry. Two wire ropes form the tensile elements. First ends of each rope are attached to the top corners of one end of the carrying part and second ends of each rope are attached to the opposite bottom corners of the other end of the carrying part. The ...

This invention provides for a process of preparing certain trifluoromethyl substituted 7H-benzimidazo[2,1-a]benz[de]isoquinoline-7-ones.

A modular garage structure is disclosed which provides an easily transportable, tamper proof housing for vehicles. Two housing enclosures are telescopically movable along a track to permit the garage to be longitudinally opened and closed.