Abstract: A sample case assembly has a pair of open ended containers each of which is supported by one section of a two-section wheeled base member or dolly. The dolly sections are pivotally joined together and with their respective display enclosures are pivoted horizontally between open and closed positions. The containers may be hinged together on one side to form sample cases and detachably connected to the dolly. A plurality of sample cases may be stacked one above the other on the dolly and aligned to pivot open simultaneously with opening of the dolly sections. A transport handle is attached to the uppermost case to facilitate mobility of the assembly.

Abstract: Apparatus for displaying articles is provided with a generally planar display surface having a pair of opposed parallel edge portions formed with spaced apart recesses. Each end of the article to be displayed is retained by a detachable clasp assembly which is adapted for releaseable retention within one of the edge portion recesses.

Abstract: In order to transport a heavy ladder to a work site, a caddy is provided in the form of a pair of transverse pieces having resilient clips installed thereon adapted to engage and clamp onto any rung of the ladder. The pieces are attached at spaced positions to the bridge of a two-wheeled carriage so that the pieces are adapted to straddle and engage a pair of adjacent rungs on the ladder in wheel-barrow position.

Abstract: A portable, light-weight, multi-section step ladder for scaling poles and formed by a main or top section followed by a train of extension sections. Each section includes a single vertical spar and a series of steps secured thereto. The upper end of the main section is provided with an open-loop assembly adapted to engage the pole and to harness this section to the pole when a downward force is exerted thereon, the lower end of the main section terminating in a coupling head. Each extension section is provided at its upper end with a latching piece adapted to engage a coupling head and at its lower end with a coupling head, whereby the main section and the extension sections may readily be interlinked to form a ladder whose length is sufficient to scale the pole.

Abstract: Aid devices to facilitate the transport and raising of heavy ladders. To raise or lower the ladder, a lifter is provided in the form of a long pole having a transverse piece attached to one end thereof, the length of the piece being almost equal to the distance between the sidepieces of the ladder. Secured to the ends of the piece are resilient clips adapted to engage and clamp onto any rung of the ladder to be raised. In order to transport the ladder to a work site, a caddy is provided in the form of a pair of transverse pieces having clips installed thereon, the pieces being attached at spaced positions to the bridge of a two-wheeled carriage so that the pieces are adapted to straddle and engage a pair of adjacent rungs on the ladder in wheel-barrow position.

Abstract: Disclosed is a swivel mounting structure for a video-telephone unit. The mounting structure allows the unit to be readily rotated and inclined or be moved with a combination of both movements. The structure will maintain the unit in the position to which it is set by either the friction provided by mechanical locking members or by having the center of gravity of the unit positioned above the center of a pair of spaced rocker members riding within a cylindrical opening.