초록 ▼

A system for securing a member, such as a shelf, to a vertical support column and holding the member in a desired position on the column includes a rotary sleeve system whose resistance to downward motion is directly proportional to the downward force applied. A conical frustum shaped collar having

A system for securing a member, such as a shelf, to a vertical support column and holding the member in a desired position on the column includes a rotary sleeve system whose resistance to downward motion is directly proportional to the downward force applied. A conical frustum shaped collar having an integral pin extending inwardly from its inside surface rests on top of a split conical frustum shaped sleeve having configurations in the split to receive the pin in one of two positions, an unlocked position and a locked position. A horizontal portion of the slit may be provided for restricting downward motion of the collar with respect to the sleeve to maintain the split in an open configuration, allowing free movement of the rotary sleeve system up or down the vertical column.

대표청구항 ▼

A system for securing a member to a vertical column having outer surface, said system comprising: a collar having an outer surface, formed to be associated with the member, and a frusto-conical inner surface; an engagement pin mounted on said inner surface of said collar and extending inwardly there

A system for securing a member to a vertical column having outer surface, said system comprising: a collar having an outer surface, formed to be associated with the member, and a frusto-conical inner surface; an engagement pin mounted on said inner surface of said collar and extending inwardly therefrom; and a sleeve having a frusto-conical outer surface formed to be rotatably mounted within said collar in mating engagement with said inner surface of said the outer surface of the vertical column thereby to engage the vertical column, said sleeve having a collapsible slit extending from its top to its base and being formed to receive said engagement pin in a locked position wherein said collar fits in tight engagement on said sleeve closing said slit, and an unlocked position wherein said collar fits loosely on said sleeve permitting said slit to remain in an open relaxed configuration.