Donald Ray Lang

US Patent:

46323449, Dec 30, 1986

Filed:

Jan 29, 1985

Appl. No.:

6/695906

Inventors:

Donald Lang - Cambridge MA
Joseph S. Shortlidge - Cambridge MA

International Classification:

F16M 1132

US Classification:

248165

Abstract:

An adjustable and collapsible triangulated tension support structure having a generally H-shaped planar configuration. Two vertical members are connected to a horizontal compression member and flexible diagonally crossed tension members extend from one vertical member to the other below the compression member. An adjustable tension member is connected to both vertical members at points located above the horizontal compression member so that tensioning of the adjustable tensioning member spreads apart the portion of the vertical member located below the horizontal compression member thereby putting the diagonally crossed tensioning member under tension. At least one horizontal shelf bracket is connected to and extends outwardly from the upper portion of each vertical member to define a supporting surface for electronic apparatus. The structure can be collapsed for transportation by moving the vertical members together in an adjacent configuration.

US Patent:

47280662, Mar 1, 1988

Filed:

Dec 29, 1986

Appl. No.:

6/947048

Inventors:

Donald Lang - Cambridge MA
Joseph S. Shortlidge - Melrose MA

International Classification:

F16M 1132

US Classification:

248165

Abstract:

A collapsible triangulated tension support structure having a generally H-shaped planar configuration. Two vertical members are connected to a horizontal compression member and flexible diagonally crossed tension members extend from one vertical member to the other below the compression member. An upper tension member is connected to both vertical members at points located above the horizontal compression member so that tensioning of the upper tensioning member spreads apart the portions of the vertical members located below the horizontal compression member thereby putting the diagonally crossed tension members under tension. Alternatively, tension can be applied to one or both of the diagonally crossed tension members so that the portions of the vertical members located above the horizontal compression member are spread apart. Other tensioning configurations also are disclosed. At least one horizontal shelf bracket is connected to and extends outwardly from the upper portion of each vertical member to define a supporting surface for electronic apparatus.