초록 ▼

A lockable hub device having a base that accommodates about a central axis a ganged pair of lockable attachment rings, a corresponding pair of locking and release elements, and a top cap, the entire assembly being secured by means of an assembly element that engages both the base and the top cap. Th

A lockable hub device having a base that accommodates about a central axis a ganged pair of lockable attachment rings, a corresponding pair of locking and release elements, and a top cap, the entire assembly being secured by means of an assembly element that engages both the base and the top cap. The articulating members to be adjusted, e.g., the legs of a table or other foldable device, are attached to one of the lockable attachment rings. For simplicity of use, it is intended that each of the locking and release elements be constructed to extend partly through lumens defined by the top cap such that they may lockably engage the cap while retaining their partial extension therethrough, and such that release of each element may be achieved in a similar fashion as the locking operation.

대표청구항 ▼

[ I claim:] [1.] A lockable hub device comprising:a) a base having a central axis, longitudinal support means about said axis defining a central lumen and at least one radially disposed lateral groove, and terminal lateral support means,b) at least one lockable attachment ring having an upper ring s

[ I claim:] [1.] A lockable hub device comprising:a) a base having a central axis, longitudinal support means about said axis defining a central lumen and at least one radially disposed lateral groove, and terminal lateral support means,b) at least one lockable attachment ring having an upper ring surface, a lower ring surface and a smooth interior ring surface defined by said upper and lower ring surfaces and further defining a first interior diameter, said at least one lockable attachment ring further having crenellated projections extending upwardly from said upper ring surface and axially past said interior ring surface such that said crenellated projections further define a second, lesser interior diameter,c) at least one locking and release element,d) a top cap, ande) and an assembly element,wherein said base is capable of accommodating about said central axis said at least one lockable attachment ring such that said at least one lockable attachment ring is retained by said longitudinal support means, said terminal lateral support means, and said top cap and wherein said base further is capable of accommodating within said at least one radially disposed lateral groove said at least one locking and release element, such that said at least one locking and release element is retained within said at least one radially disposed lateral groove by means of said at least one lockable attachment ring and further such that said locking and release element is capable of engaging said at least one lockable attachment ring by means of said projections, the entire assembly being secured by engagement of said assembly element with both said base and said top cap.