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US 6,186,463 B1Granted
Rib clamping system for display devices
AssigneeDicke Tool Company
InventorsJeffrey A. Williams, Grant D. Dicke, James George Kokenes
Life of this patent
Estimating the term…
Abstract
A releasable coupling assembly for support ribs associated with sign panels, and the like elongated support members. Force generated by a knob and threaded shaft is applied to a pressure plate through a lever arm. The lever arm is arranged so as to provide a reduced mechanical advantage which limits applied force to the rib. The lever arm may also be made resilient to limit force applied to a rib being clamped.
Claims18
A releasable coupling assembly for clamping a rib comprising:
- a mounting channel for receiving the rib;
- a press plate movably mounted for movement toward and away from said channel for clamping said rib in said channel and releasing said rib from said channel, respectively;
- an operating member for applying force to said press plate;
- and
- a lever arm coupling said operating member and said press plate to move said press plate toward and away from said channel.
2 more elements
A sign stand assembly, comprising:
- a support base;
- a rib member for attachment to a sign;
- a mounting channel supported by the support base, for receiving the rib;
- a press plate movably mounted for movement toward and away from said channel for clamping said rib to said channel and releasing said rib from said channel, respectively;
- an operating member for applying force to said press plate;
- a resilient lever arm coupling said operating member and said press plate to move said press plate toward and away from said channel, said resilient lever arm deflecting under force of said operating member to limit the clamping force applied by said press plate.
3 more elements
Dependencies are inferred from the claim text.