Quick manual lock for display frames

Details Quick manual lock for display frames Quick manual lock for display frames

1982-12-28

1984-10-30

Murtagh, John E.

Static structures (e.g., buildings)

Openwork; e.g., truss, trellis, grille, screen, frame, or...

Components adjustably or collapsibly connected

52109, 248165, E04H 1218

Patent

active

044793405

ABSTRACT:
A display frame is formed by a number of collapsible, articulated structural sections movable between a stable erect configuration and a collapsed configuration. Four pairs of scissored links are connected to exterior pivots at their ends to form the exterior of each structural section, and the interior is formed by a pair of face pivots and four pairs of crossed, but unconnected, face links, each pivotally connected at one end to a face pivot. A through-extending opening is provided in one face pivot, and a locking component is associated with the other face pivot. One of the structural sections of the frame has as the locking component a cam follower member which during movement of the face pivots towards each other is cammed by a linear cam associated with the through-extending opening, and then snaps to lock in place.

REFERENCES:
patent: 4276726 (1981-07-01), Derus

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